Earthquake Network research project that aims to develop and maintain a crowdsourced smartphone-based earthquake warning system at a global level. The system uses the on-board accelerometers in privately owned smartphones of volunteer participants to detect earthquake waves (rather than conventional seismometers ). When it detects an earthquake, it issues an earthquake warning to alert people who the damaging waves of the earthquake have not yet reached.
106-457: The project started on January 1, 2013, with the release of the homonymous Android application Earthquake Network. The author of the research project and developer of the smartphone application is Francesco Finazzi of the University of Bergamo , Italy. Earthquake warning systems strive to rapidly detect earthquakes and alert the population in advance. When the system detects an earthquake,
212-410: A native development kit (NDK) for applications or extensions in C or C++, Google App Inventor , a visual environment for novice programmers, and various cross platform mobile web applications frameworks . In January 2014, Google unveiled a framework based on Apache Cordova for porting Chrome HTML 5 web applications to Android, wrapped in a native application shell. Additionally, Firebase
318-469: A user experience . Samsung Experience is used internally by Samsung for smartphones, feature phones and tablet computers, and is not available for licensing by external parties. The Android version of Samsung Experience also came with Samsung-made apps preloaded until the Galaxy S6 , which removed all Samsung pre-loaded apps except Samsung Galaxy Store (formerly Galaxy Apps) to save storage space due to
424-408: A weather forecast , the user's email inbox, or a news ticker directly on the home screen. A home screen may be made up of several pages, between which the user can swipe back and forth. Third-party apps available on Google Play and other app stores can extensively re- theme the home screen, and even mimic the look of other operating systems, such as Windows Phone . Most manufacturers customize
530-399: A PC and mobile operating system, based on Android, to "compete directly with Microsoft Windows and Google Android". The Chinese Academy of Engineering noted that "more than a dozen" companies were customizing Android following a Chinese ban on the use of Windows 8 on government PCs. Android is developed by Google until the latest changes and updates are ready to be released, at which point
636-710: A choice of non-default runtimes that allow better C++ support. The SDK includes a comprehensive set of development tools, including a debugger , software libraries , a handset emulator based on QEMU , documentation, sample code, and tutorials. Initially, Google's supported integrated development environment (IDE) was Eclipse using the Android Development Tools (ADT) plugin; in December 2014, Google released Android Studio , based on IntelliJ IDEA , as its primary IDE for Android application development. Other development tools are available, including
742-402: A fluid touch interface, often using the vibration capabilities of the device to provide haptic feedback to the user. Internal hardware, such as accelerometers , gyroscopes and proximity sensors are used by some applications to respond to additional user actions, for example adjusting the screen from portrait to landscape depending on how the device is oriented, or allowing the user to steer
848-586: A keyboard and mouse. In addition to their availability on commercially available hardware, similar PC hardware-friendly versions of Android are freely available from the Android-x86 project, including customized Android 4.4. Using the Android emulator that is part of the Android SDK , or third-party emulators, Android can also run non-natively on x86 architectures. Chinese companies are building
954-494: A large number of smartphones may be sufficient to estimate ground acceleration. Development stage: analysis. The earthquake magnitude is an important parameter, as it defines the energy released by the earthquake event and helps evaluate earthquake severity in terms of potential damages to property and people. Magnitude estimation using the data collected by the smartphone network is currently under study. Development stage: analysis. Android (operating system) Android
1060-499: A more refined user interface compared to the prior version based on Android 4.1.1, along with new functionalities such as voice shutter and quick memo. Lineage Android Distribution is a custom mobile operating system based on the Android Open Source Project (AOSP). It serves as the successor to the highly popular custom ROM, CyanogenMod , from which it was forked in December 2016 when Cyanogen Inc. announced it
1166-582: A paper published on the Bulletin of the Seismological Society of America journal. Development stage: released. The accelerations recorded by a dense smartphone network can be used to produce high resolution peak ground acceleration maps for the detected earthquakes. The task is complicated by the fact that smartphones are not secured to the ground, so they don't directly measure ground acceleration. If properly calibrated , however, data from
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#17327801847931272-474: A potentially large number of people in affected locations not too close to the epicenter can receive the warning several seconds (5 to 60) before damaging shaking occurs. This is possible because data flows through the phone system faster than earthquake waves travel. Smartphones with the Earthquake Network application installed are nodes of the sensor network of the Earthquake Network project. When
1378-564: A press conference in a New York City subway station . Since 2008, Android has seen numerous updates which have incrementally improved the operating system, adding new features and fixing bugs in previous releases. Each major release is named in alphabetical order after a dessert or sugary treat, with the first few Android versions being called " Cupcake ", " Donut ", " Eclair ", and " Froyo ", in that order. During its announcement of Android KitKat in 2013, Google explained that "Since these devices make our lives so sweet, each Android version
1484-635: A range of other electronics, such as game consoles , digital cameras , portable media players , and PCs , each with a specialized user interface. Some well-known derivatives include Android TV for televisions and Wear OS for wearables , both developed by Google. Software packages on Android, which use the APK format, are generally distributed through proprietary application stores like Google Play Store , Amazon Appstore , Samsung Galaxy Store , Huawei AppGallery , Cafe Bazaar , GetJar , and Aptoide , or open source platforms like F-Droid . Android has been
1590-589: A redesigned UI that resembled stock Androids. iQOO UI was a custom user interface based on Vivo's FuntouchOS. The UI largely resembled its predecessor, with a customized UI on top of the FuntouchOS. It was installed on iQOO smartphones sold in China and later was succeeded by OriginOS GrapheneOS is a variant of Android for Pixel hardware. Hello UI (formerly called My UI and My UX) is a custom Android UI developed by Motorola for their devices. It used to look like
1696-455: A smartphone is not in use and is connected to a power source, the application switches on the accelerometer to monitor the smartphone acceleration. If motion exceeds a threshold, the smartphone sends a signal to a central server. The server collects the signals sent by all the smartphones and applies a statistical algorithm to decide in real time whether an earthquake is likely occurring. If the system detects an earthquake, it instantly notifies all
1802-474: A split-screen view mode are the 2012 Samsung Galaxy S3 and Note 2 , the former of which received this feature with the premium suite upgrade delivered in TouchWiz with Android 4.1 Jelly Bean. When connecting or disconnecting charging power and when shortly actuating the power button or home button, all while the device is powered off, a visual battery meter whose appearance varies among vendors appears on
1908-430: A vehicle in a racing game by rotating the device, simulating control of a steering wheel . Android devices boot to the home screen , the primary navigation and information "hub" on Android devices, analogous to the desktop found on personal computers. Android home screens are typically made up of app icons and widgets ; app icons launch the associated app, whereas widgets display live, auto-updating content, such as
2014-516: A whole lot like the program has wrapped up". From 2008 to 2013, Hugo Barra served as product spokesperson, representing Android at press conferences and Google I/O , Google's annual developer-focused conference. He left Google in August 2013 to join Chinese phone maker Xiaomi . Less than six months earlier, Google's then- CEO Larry Page announced in a blog post that Andy Rubin had moved from
2120-622: A wireless inbuilt modem and SIM tray for telephone and data connection. In Q1 2018, over 123 million smartphones were sold (the most ever recorded) with 60.2% running Android and 20.9% running iOS . Sales in 2012 were 1.56 billion; sales in 2023 were 1.43 billion with 53.32% being Android . Android alone has more sales than the popular desktop operating system Microsoft Windows , and smartphone use (even without tablets) outnumbers desktop use. Mobile devices, with mobile communications abilities (for example, smartphones ), contain two mobile operating systems. The main user-facing software platform
2226-596: Is Android 14 , released on October 4, 2023. Android One, a successor to Google Nexus , is a software experience that runs on the unmodified Android operating system. Unlike most of the "stock" Androids running on the market, the Android One User Interface (UI) closely resembles the Google Pixel UI, due to Android One being a software experience developed by Google and distributed to partners such as Nokia Mobile (HMD) and Xiaomi . Thus,
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#17327801847932332-508: Is a mobile operating system based on a modified version of the Linux kernel and other open-source software, designed primarily for touchscreen -based mobile devices such as smartphones and tablets . It is the world's most widely used operating system due to it being used on most smartphones and tablets outside of iPhones and iPads , which use Apple 's iOS and iPadOS , respectively. As of October 2024 , Android accounts for 45% of
2438-445: Is a custom Android UI developed by ZTE for their flagship smartphones and nubia smartphones. MyOS is based on the Android Open Source Project (AOSP). This is a redesign from their previous custom Android UI, MiFavor. Nothing OS is a custom Android UI developed by Nothing for their Nothing Phone (1) . Nothing OS design interface are identical to the stock Android and Pixel UI experience, aside from their custom font and widget which
2544-516: Is a front-end touch interface developed by LG Electronics and partners, featuring a full touch user interface . It is not an operating system. LG UX is used internally by LG for sophisticated feature phones and tablet computers, and is not available for licensing by external parties. Optimus UI 2, based on Android 4.1.2, has been released on the Optimus K II and the Optimus Neo 3. It features
2650-482: Is a mobile operating system developed by Realme which is based on OPPO ColorOS , which itself is based on the Android Open Source Project (AOSP). The UI mostly resemble its predecessor, but with a custom UI on top of ColorOS to match Realme's target audience. realme UI R edition is a custom Android skin that Realme developed for their lower-end device line with "C" and Narzo series, the Android-based line of
2756-404: Is a software suite developed by HTC, used primarily on the company's Android-based devices. Serving as a successor to HTC's TouchFLO 3D software for Windows Mobile , Sense modifies many aspects of the Android user experience , incorporating added features (such as an altered home screen and keyboard), widgets , HTC-developed applications, and redesigned applications. The first device with Sense,
2862-548: Is an Indian government-funded project to develop a free and open-source operating system (OS) for use in government and public systems. BlackBerry Secure is an operating system developed by BlackBerry , based on the Android Open Source Project (AOSP). BlackBerry officially announced the name for their Android-based front-end touch interface in August 2017, before which BlackBerry Secure was running on BlackBerry brand devices, such as BlackBerry Priv , DTEK 50 / 60 and BlackBerry KeyOne . Currently, BlackBerry plans to license out
2968-471: Is an operating system developed by Meizu Technology Co., Ltd. , an open-source operating system based on the Android Open Source Project (AOSP). Flyme OS is mainly installed on Meizu smartphones such as the MX series . However, it also has official ROM support for a few Android devices. FuntouchOS is a custom user interface developed by Vivo that is based on the Android Open Source Project. FuntouchOS 10.5 had
3074-485: Is based on Android Go , hence the overall experience is tune down to allowed for smoother experience on budget Realme devices. Red Magic OS is a mobile operating system developed by ZTE and Nubia for their Red Magic devices. Replicant is a custom mobile operating system based on the Android with all proprietary drivers and bloated closed-source software removed. TCL UI is a custom user interface developed by TCL Technology for their in-house smartphone series. The OS
3180-432: Is based on AOSP, which is open-source, it consisted of closed-source proprietary software. A specific version of MIUI developed for Xiaomi sub-brand (Currently an independence brand) POCO , the overall experience of the "skin" was similar to those of standard MIUI expect during the early release of MIUI for POCO where compared to standard MIUI it has an app drawer and allowed for 3rd party Android icon customization. Whereas
3286-603: Is based on Google's Android Open Source Project (AOSP). EMUI is preinstalled on most Huawei and Honor devices. While it was based on the open-source Android operating system, it consists of closed-source proprietary software. Since the US sanctions, it is currently a fork of Android similar to FireOS instead of a compatible one. In mainland China, and internationally since 2020 due to U.S. sanctions, EMUI devices use Huawei Mobile Services such as Huawei AppGallery instead of Google Mobile Services. Aside from based on Android, Huawei also bundle
Earthquake Network - Misplaced Pages Continue
3392-402: Is based on dot design. nubia UI was a custom Android UI developed by ZTE and nubia for their smartphones. nubia UI was based on the Android Open Source Project (AOSP). One UI (formerly called TouchWiz and Samsung Experience ) is a front-end touch interface developed by Samsung Electronics in 2008 with partners, featuring a full touch user interface. It is not a true operating system, but
3498-406: Is based on the Android Open Source Project (AOSP). VOS is a custom Android UI developed by BQ Aquaris and Vsmart . XOS (formerly known as XUI) is an Android-based operating system developed by Hong Kong mobile phone manufacturer Infinix Mobile , a subsidiary of Transsion Holdings , exclusively for their smartphones. XOS allows for a wide range of user customization without requiring rooting
3604-656: Is developed by Google and based on the open-source Android system. Unlike Nexus phones, where Google shipped with stock Android, the UI that came with first-generation Pixel phones was slightly modified. As part of the Google Pixel software, the Pixel UI and its home launcher are closed-source and proprietary, so it is only available on Pixel family devices. However, third-party mods allow non-Pixel smartphones to install Pixel Launcher with Google Now feed integration. realme UI
3710-664: Is expanding its low-cost Android One program into the United States, although The Verge notes that the company will presumably not produce the actual devices itself. Google introduced the Pixel and Pixel XL smartphones in October 2016, marketed as being the first phones made by Google, and exclusively featured certain software features, such as the Google Assistant , before wider rollout. The Pixel phones replaced
3816-442: Is expected to solve 4 main problems related to earthquake detection and location using a smartphone network. To be effective, the earthquake warning system of the Earthquake Network project must detect the earthquake as fast as possible. It detects earthquakes through real-time analysis of the data that the smartphone network sends to the central server. Since smartphones detect accelerations not necessarily induced by an earthquake,
3922-547: Is known as the Android Open Source Project ( AOSP ) and is free and open-source software (FOSS) primarily licensed under the Apache License . However, most devices run the proprietary Android version developed by Google, which ships with additional proprietary closed-source software pre-installed, most notably Google Mobile Services (GMS), which includes core apps such as Google Chrome ,
4028-438: Is low, the system will begin invisibly and automatically closing inactive processes, starting with those that have been inactive for the longest amount of time. Lifehacker reported in 2011 that third-party task-killer applications were doing more harm than good. Some settings for use by developers for debugging and power users are located in a "Developer options" sub menu, such as the ability to highlight updating parts of
4134-426: Is named after a dessert", although a Google spokesperson told CNN in an interview that "It's kind of like an internal team thing, and we prefer to be a little bit—how should I say—a bit inscrutable in the matter, I'll say". In 2010, Google launched its Nexus series of devices, a lineup in which Google partnered with different device manufacturers to produce new devices and introduce new Android versions. The series
4240-460: Is supplemented by a second low-level proprietary real-time operating system which operates the radio and other hardware. Research has shown that these low-level systems may contain a range of security vulnerabilities permitting malicious base stations to gain high levels of control over the mobile device. Mobile operating systems have had the most use of any operating system since 2017 (measured by web use). Mobile operating system milestones mirror
4346-517: Is the latest version and includes improvements specific to foldable phones , tablets, desktop -sized screens , and Chromebooks . Android Inc. was founded in Palo Alto, California , in October 2003 by Andy Rubin , Rich Miner , Nick Sears, and Chris White. Rubin described the Android project as having "tremendous potential in developing smarter mobile devices that are more aware of its owner's location and preferences". The early intentions of
Earthquake Network - Misplaced Pages Continue
4452-709: Is the primary application store installed on Android devices that comply with Google's compatibility requirements and license the Google Mobile Services software. Google Play Store allows users to browse, download and update applications published by Google and third-party developers; as of January 2021 , there are more than three million applications available for Android in Play Store. As of July 2013 , 50 billion application installations had been performed. Some carriers offer direct carrier billing for Google Play application purchases, where
4558-473: Is used by default), and adoptable storage. Portable storage is treated as an external storage device. Adoptable storage, introduced on Android 6.0, allows the internal storage of the device to be spanned with the SD card, treating it as an extension of the internal storage. This has the disadvantage of preventing the memory card from being used with another device unless it is reformatted . Android 4.4 introduced
4664-645: The Amazon Appstore , GetJar , and SlideMe. F-Droid , another alternative marketplace, seeks to only provide applications that are distributed under free and open source licenses . In October 2020, Google removed several Android applications from Play Store , as they were identified breaching its data collection rules. The firm was informed by International Digital Accountability Council (IDAC) that apps for children like Number Coloring , Princess Salon and Cats & Cosplay , with collective downloads of 20 million, were violating Google's policies. At
4770-544: The Android software development kit (SDK) and, often, Kotlin programming language, which replaced Java as Google's preferred language for Android app development in May 2019, and was originally announced in May 2017. Java is still supported (originally the only option for user-space programs, and is often mixed with Kotlin), as is C++ . Java or other JVM languages, such as Kotlin, may be combined with C /C++, together with
4876-531: The HTC Hero , was released in 2009. Xiaomi HyperOS or HyperOS (formerly called MIUI ), developed by the Chinese electronic company Xiaomi , is a mobile operating system based on the Android Open Source Project (AOSP). It is mostly founded in Xiaomi smartphones and tablets such as the Xiaomi (formerly Mi) and Redmi Series. However, MIUI also had official ROM support for a few Android devices. Although HyperOS
4982-460: The OnePlus One . Future Realme devices will have their own version of ColorOS. CopperheadOS is a security-hardened version of Android. DivestOS is a soft fork of LineageOS . Includes Monthly Updates, FOSS Focus, Deblobbing, Security and Privacy focus, and F-Droid Huawei EMUI is the front-end touch interface developed by Huawei Technologies Co. Ltd. and its sub-brand Honor which
5088-482: The OnePlus One . It is preinstalled on the OnePlus 2 , OnePlus X , OnePlus 3 , OnePlus 3T , OnePlus 5 , OnePlus 5T , and OnePlus 6 . As stated by Oneplus, OxygenOS is focused on stabilizing and maintaining of stock Android functionalities like those found on Nexus devices. It consists of mainly Google apps and minor UI customization to maintain the sleekness of stock Android. Google Pixel UI or Pixel Launcher
5194-599: The Open Handset Alliance , a consortium of technology companies including Google, device manufacturers such as HTC, Motorola and Samsung, wireless carriers such as Sprint and T-Mobile , and chipset makers such as Qualcomm and Texas Instruments , unveiled itself, with a goal to develop "the first truly open and comprehensive platform for mobile devices". Within a year, the Open Handset Alliance faced two other open source competitors,
5300-571: The Symbian Foundation and the LiMo Foundation , the latter also developing a Linux -based mobile operating system like Google. In September 2007, InformationWeek covered an Evalueserve study reporting that Google had filed several patent applications in the area of mobile telephony. On September 23, 2008, Android was introduced by Andy Rubin, Larry Page, Sergey Brin, Cole Brodman, Christopher Schlaeffer and Peter Chou at
5406-743: The Windows 11 announcement event in June 2021, Microsoft showcased the new Windows Subsystem for Android (WSA) to enable support for the Android Open Source Project (AOSP), but it has since been deprecated. It was meant to allow users running Android apps and games in Windows 11 on their Windows desktop. On March 5, 2024, Microsoft announced deprecation of WSA with support ending on March 5, 2025. The storage of Android devices can be expanded using secondary devices such as SD cards . Android recognizes two types of secondary storage: portable storage (which
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#17327801847935512-400: The digital distribution platform Google Play , and the associated Google Play Services development platform. Firebase Cloud Messaging is used for push notifications. While AOSP is free, the "Android" name and logo are trademarks of Google, which imposes standards to restrict the use of Android branding by "uncertified" devices outside their ecosystem. Over 70% of smartphones based on
5618-581: The global operating system market , followed by Windows with 26%. Android has historically been developed by a consortium of developers known as the Open Handset Alliance , but its most widely used version is primarily developed by Google . It was unveiled in November 2007, with the first commercial Android device, the HTC Dream , being launched in September 2008. At its core, the operating system
5724-453: The source code is made available to the Android Open Source Project (AOSP), an open source initiative led by Google. The first source code release happened as part of the initial release in 2007. All releases are under the Apache License . The AOSP code can be found with minimal modifications on select devices, mainly the former Nexus and current Android One series of devices. However, most original equipment manufacturers (OEMs) customize
5830-515: The Android Open Source Project run Google's ecosystem (which is known simply as Android), some with vendor-customized user interfaces and software suites, such as TouchWiz and later One UI by Samsung and HTC Sense . Competing ecosystems and forks of AOSP include Fire OS developed by Amazon , ColorOS by Oppo , OriginOS by Vivo , MagicUI by Honor , and custom ROMs such as LineageOS , as well as Meta Horizon OS for VR headsets . Android's source code has been used to develop variants on
5936-536: The Android division to take on new projects at Google, and that Sundar Pichai would become the new Android lead. Pichai himself would eventually switch positions, becoming the new CEO of Google in August 2015 following the company's restructure into the Alphabet conglomerate, making Hiroshi Lockheimer the new head of Android. On Android 4.4 , KitKat , shared writing access to MicroSD memory cards has been locked for user-installed applications, to which only
6042-514: The Android version and manufacturer. Many early Android OS smartphones were equipped with a dedicated search button for quick access to a web search engine and individual apps' internal search feature. More recent devices typically allow the former through a long press or swipe away from the home button. The dedicated option key, also known as menu key, and its on-screen simulation, is no longer supported since Android version 10. Google recommends mobile application developers to locate menus within
6148-653: The BlackBerry Secure to other OEMs. CalyxOS is an operating system for smartphones based on Android with mostly free and open-source software. It is produced by the Calyx Institute as part of its mission to "defend online privacy, security and accessibility." ColorOS is a custom front-end touch interface based on the Android Open Source Project (AOSP) and developed by OPPO Electronics Corp. In 2016, OPPO officially released ColorOS with every OPPO and Realme device and released an official ROM for
6254-493: The HarmonyOS microkernel in the latest EMUI update inside Android which handle other process including security authentication such as the fingerprint authentication. /e/ is an operating system forked from the source code of LineageOS (based on Android). /e/ targets Android smart phone devices and uses MicroG as a replacement for Google Play Services . /e/OS is not completely open source software , because it comes with
6360-638: The Nexus series, with a new generation of Pixel phones launched in October 2017. In May 2019, the operating system became entangled in the trade war between China and the United States involving Huawei , which, like many other tech firms, had become dependent on access to the Android platform. In the summer of 2019, Huawei announced it would create an alternative operating system to Android known as Harmony OS , and has filed for intellectual property rights across major global markets. Under such sanctions Huawei has long-term plans to replace Android in 2022 with
6466-496: The SAF to access any other part of the filesystem. Since Android devices are usually battery-powered, Android is designed to manage processes to keep power consumption at a minimum. When an application is not in use the system suspends its operation so that, while available for immediate use rather than closed, it does not use battery power or CPU resources. Android manages the applications stored in memory automatically: when memory
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#17327801847936572-489: The Storage Access Framework (SAF), a set of APIs for accessing files on the device's filesystem. As of Android 11, Android has required apps to conform to a data privacy policy known as scoped storage , under which apps may only automatically have access to certain directories (such as those for pictures, music, and video), and app-specific directories they have created themselves. Apps are required to use
6678-462: The UI is intended to be as clean as possible. Original equipment manufacturer (OEM) partners may tweak or add additional apps such as cameras to the firmware , but most of the apps are handled proprietarily by Google. Operating system updates are handled by Google and internally tested by OEMs before being distributed via an OTA update to end users . BharOS is a mobile operating system in India. It
6784-453: The ability to adjust the flashlight brightness. Notifications are "short, timely, and relevant information about your app when it's not in use", and when tapped, users are directed to a screen inside the app relating to the notification. Beginning with Android 4.1 "Jelly Bean" , "expandable notifications" allow the user to tap an icon on the notification in order for it to expand and display more information and possible app actions right from
6890-483: The company in July of that year for at least $ 50 million; this was Google's "best deal ever" according to Google's then-vice president of corporate development, David Lawee , in 2010. Android's key employees, including Rubin, Miner, Sears, and White, joined Google as part of the acquisition. Not much was known about the secretive Android Inc. at the time, with the company having provided few details other than that it
6996-517: The company were to develop an advanced operating system for digital cameras , and this was the basis of its pitch to investors in April 2004. The company then decided that the market for cameras was not large enough for its goals, and five months later it had diverted its efforts and was pitching Android as a handset operating system that would rival Symbian and Microsoft Windows Mobile . Rubin had difficulty attracting investors early on, and Android
7102-555: The cost of the application is added to the user's monthly bill. As of May 2017 , there are over one billion active users a month for Gmail, Android, Chrome, Google Play and Maps. Due to the open nature of Android, a number of third-party application marketplaces also exist for Android, either to provide a substitute for devices that are not allowed to ship with Google Play Store, provide applications that cannot be offered on Google Play Store due to policy violations, or for other reasons. Examples of these third-party stores have included
7208-632: The current MIUI for POCO shared all the common experience with those of standard MIUI, except the icon and the POCO Launcher instead of stock MIUI Launcher. In 2024 MIUI for POCO was replaced by Xiaomi HyperOS. Indus OS is a custom mobile operating system based on the Android Open Source Project (AOSP). It is developed by the Indus OS team based in India. No longer valid as of 2018, Indus OS is available on Micromax , Intex , Karbonn , and other Indian smartphone brands. LG UX (formerly Optimus UI )
7314-511: The dedicated directories with respective package names, located inside Android/data/ , remained writeable. Writing access has been reinstated with Android 5 Lollipop through the backwards-incompatible Google Storage Access Framework interface . In June 2014, Google announced Android One , a set of "hardware reference models" that would "allow [device makers] to easily create high-quality phones at low costs", designed for consumers in developing countries. In September, Google announced
7420-488: The development of mobile phones , PDAs , and smartphones: These operating systems often run atop baseband or other real-time operating systems that handle hardware aspects of the phone. Android (based on the modified Linux kernel ) is a mobile operating system developed by Open Handset Alliance. The base system is open-source (and only the kernel copyleft ), but the apps and drivers which provide functionality are increasingly becoming closed-source . Besides having
7526-567: The display, show an overlay with the current status of the touch screen, show touching spots for possible use in screencasting , notify the user of unresponsive background processes with the option to end them ("Show all ANRs", i.e. "App's Not Responding"), prevent a Bluetooth audio client from controlling the system volume ("Disable absolute volume"), and adjust the duration of transition animations or deactivate them completely to speed up navigation. Developer options are initially hidden since Android 4.2 "Jelly Bean", but can be enabled by actuating
7632-574: The earthquakes were detected in Chile where the network is quite stable in terms of number of smartphones. As an example, the magnitude 8.3 Illapel earthquake was detected by the smartphones in the city of Valparaíso . Smartphones in Santiago received the warning 10 seconds before the earthquake, while smartphones in Mendoza received the warning 20 seconds in advance. The Earthquake Network project
7738-408: The fact that newer devices have become smaller and more mobile, unlike the hardware of the past. Key notabilities blurring this line are the introduction of tablet computers , light laptops , and the hybridization of the two in 2-in-1 PCs . Mobile operating systems combine features of a desktop computer operating system with other features useful for mobile or handheld use, and usually including
7844-530: The first set of Android One phones for release in India. However, Recode reported in June 2015 that the project was "a disappointment", citing "reluctant consumers and manufacturing partners" and "misfires from the search company that has never quite cracked hardware". Plans to relaunch Android One surfaced in August 2015, with Africa announced as the next location for the program a week later. A report from The Information in January 2017 stated that Google
7950-437: The issue. Android's default user interface is mainly based on direct manipulation , using touch inputs that loosely correspond to real-world actions, like swiping, tapping, pinching, and reverse pinching to manipulate on-screen objects, along with a virtual keyboard . Game controllers and full-size physical keyboards are supported via Bluetooth or USB . The response to user input is designed to be immediate and provides
8056-399: The largest installed base worldwide on smartphones, it is also the most popular operating system for general purpose computers (a category that includes desktop computers and mobile devices), even though Android is not a popular operating system for regular (desktop) personal computers (PCs). Although the Android operating system is free and open-source software , in devices sold, much of
8162-453: The latest one based on official release from Google AOSP and heavy theme customization. "MagicOS" (formerly known as Magic UI and Magic Live) is a front-end touch interface developed by Honor as a subsidiary of Huawei Technologies Co. Ltd before Honor became an independent company. Magic UI is based on Huawei EMUI , which is based on the Android Open Source Project (AOSP). The overall user interface looks almost identical to EMUI, even after
8268-559: The look and features of their Android devices to differentiate themselves from their competitors. Along the top of the screen is a status bar, showing information about the device and its connectivity. This status bar can be pulled (swiped) down from to reveal a notification screen where apps display important information or updates, as well as quick access to system controls and toggles such as display brightness, connectivity settings ( WiFi , Bluetooth, cellular data), audio mode, and flashlight . Vendors may implement extended settings such as
8374-486: The mobile communications market continued to build through December 2006. An early prototype had a close resemblance to a BlackBerry phone, with no touchscreen and a physical QWERTY keyboard , but the arrival of 2007's Apple iPhone meant that Android "had to go back to the drawing board". Google later changed its Android specification documents to state that "Touchscreens will be supported", although "the Product
8480-607: The most common screen. Android supports all versions of OpenGL ES and Vulkan (and version 1.1 available for some devices ). Android devices incorporate many optional hardware components, including still or video cameras, GPS , orientation sensors , dedicated gaming controls, accelerometers, gyroscopes, barometers, magnetometers , proximity sensors, pressure sensors , thermometers, and touchscreens . Some hardware components are not required, but became standard in certain classes of devices, such as smartphones, and additional requirements apply if they are present. Some other hardware
8586-483: The most used operating system worldwide on smartphones since 2011 and on tablets since 2013. As of May 2021 , it has over three billion monthly active users , the largest installed base of any operating system in the world, and, as of 2024 , the Google Play Store features 1.7 million apps; a decline from its of peak of over 3 million apps in April 2021. Android 15 , released on October 15, 2024,
8692-513: The new operating system, as Harmony OS was originally designed for internet of things devices, rather than for smartphones and tablets. On August 22, 2019, it was announced that Android "Q" would officially be branded as Android 10, ending the historic practice of naming major versions after desserts. Google stated that these names were not "inclusive" to international users (due either to the aforementioned foods not being internationally known, or being difficult to pronounce in some languages). On
8798-409: The notification. An "All Apps" screen lists all installed applications, with the ability for users to drag an app from the list onto the home screen. The app list may be accessed using a gesture or a button, depending on the Android version. A "Recents" screen, also known as "Overview", lets users switch between recently used apps. The recent list may appear side-by-side or overlapping, depending on
8904-550: The official support. Since 2012, Android devices with Intel processors began to appear, including phones and tablets. While gaining support for 64-bit platforms, Android was first made to run on 64-bit x86 and then on ARM64 . An unofficial experimental port of the operating system to the RISC-V architecture was released in 2021. Requirements for the minimum amount of RAM for devices running Android 7.1 range from in practice 2 GB for best hardware, down to 1 GB for
9010-530: The operating system's build number in the device information seven times. Hiding developers options again requires deleting user data for the "Settings" app, possibly resetting some other preferences. The main hardware platform for Android is ARM (the ARMv7 and ARMv8-A architectures), with x86 and x86-64 architectures also officially supported in later versions of Android. The unofficial Android-x86 project provided support for x86 architectures ahead of
9116-448: The proprietary Magic Earth 'Maps' app. Amazon Fire OS is a mobile operating system forked from Android and produced by Amazon for its Fire range of tablets , Echo and Echo Dot, and other content delivery devices like Fire TV (previously for their Fire Phone ). Fire OS primarily centers on content consumption, with a customized user interface and heavy ties to content available from Amazon's own storefronts and services. Flyme OS
9222-490: The removal of its MicroSD . With the release of Samsung Galaxy S8 and S8+, Samsung Experience 8.1 was preinstalled on it with new functions, known as Samsung DeX. Similar to the concept of Microsoft Continuum, Samsung DeX allowed high-end Galaxy devices such as S8/S8+ or Note 8 to connect into a docking station, which extends the device to allow desktop-like functionality by connecting a keyboard, mouse, and monitor. Samsung also announced "Linux on Galaxy", which allows users to use
9328-527: The same day, Android Police reported that Google had commissioned a statue of a giant number "10" to be installed in the lobby of the developers' new office. Android 10 was released on September 3, 2019, to Google Pixel phones first. In late 2021, some users reported that they were unable to dial emergency services. The problem was caused by a combination of bugs in Android and in the Microsoft Teams app; both companies released updates addressing
9434-419: The screen, allowing the user to quickly assess the charge status of a powered-off without having to boot it up first. Some display the battery percentage. Most Android devices come with preinstalled Google apps including Gmail, Google Maps, Google Chrome, YouTube, Google Play Movies & TV, and others. Applications (" apps "), which extend the functionality of devices (and must be 64-bit ), are written using
9540-509: The separation. While it was based on the open-source Android operating system, it consists of closed-source proprietary software. Due to sanctions imposed by the US on Huawei, new devices released by both Huawei and Honor are no longer allowed to include Google Mobile Services . To allow Honor to regain access to Google services, Huawei sold off Honor to become an independent company, thereby allowing them to pre-install Google Mobile Services on their latest devices. MyOS (formerly called MiFavor)
9646-546: The server implements a statistical algorithm that recognizes real earthquakes against background noise. The statistical methods at the basis of the algorithm provides control over the probability of false alarm. Development stage: released. When detection occurs, it is important to obtain an estimate of the epicenter in order to locate the geographic areas that was affected by the earthquake. Two epicenter estimation algorithms for crowdsourced smartphone-based earthquake early warning systems have been developed and they are detailed in
9752-414: The smartphones through the application. The application sounds an alarm, and the smartphone owner can warn others and take cover. The number of smartphones in the network is highly variable as users can install or uninstall the Earthquake Network application at any time. Additionally, the number of active smartphones (not in use and connected to a source of power) constantly changes during the day. Globally,
9858-489: The software bundled with it (including Google apps and vendor-installed software) is proprietary software and closed-source. Android's releases before 2.0 (1.0, 1.5 , 1.6 ) were used exclusively on mobile phones. Android 2.x releases were mostly used for mobile phones but also some tablets. Android 3.0 was a tablet-oriented release and does not officially run on mobile phones. Both phone and tablet compatibility were merged with Android 4.0 . The current Android version
9964-611: The source code to run on their hardware. Mobile operating system A mobile operating system is an operating system used for smartphones , tablets , smartwatches , smartglasses, or other non-laptop personal mobile computing devices . While computers such as typical/mobile laptops are "mobile", the operating systems used on them are usually not considered mobile, as they were originally designed for desktop computers that historically did not have or need specific mobile features. This "fine line" distinguishing mobile and other forms has become blurred in recent years, due to
10070-556: The standard Linux distribution on the DeX platform. Origin OS is a custom user interface developed by Vivo that is based on Android. It is a redesigned skin of Funtouch OS. It is currently only available in China but may someday be released globally. OxygenOS is based on the open source Android Open Source Project (AOSP) and is developed by OnePlus to replace Cyanogen OS on OnePlus devices such as
10176-618: The stock Android user experience up until My UI 3.x. HiOS is an Android-based operating system developed by Hong Kong mobile phone manufacturer Tecno Mobile , a subsidiary of Transsion Holdings , exclusively for their smartphones. HiOS allows for a wide range of user customization without requiring rooting the mobile device. The operating system is also bundled with utility applications that allow users to free up memory, freeze applications, limit data accessibility to applications among others. HiOS comes with features like Launcher, Private Safe, Split Screen and Lockscreen Notification. HTC Sense
10282-411: The total number of smartphones with the application installed is around 750,000 (September 2017) and the number of active smartphones ranges from around 30,000 to around 120,000 depending on the hour of the day. The geographic distribution of the network nodes is given in the following table. From the beginning of the project, the smartphone network detected 4,900+ earthquakes as of February 2023. Most of
10388-495: The user interface. On more recent phones, its place is occupied by a task key used to access the list of recently used apps when actuated. Depending on device, its long press may simulate a menu button press or engage split screen view, the latter of which is the default behaviour since stock Android version 7. Native support for split screen view has been added in stock Android version 7.0 Nougat . The earliest vendor-customized Android-based smartphones known to have featured
10494-434: Was acquired by Google in 2014 that provides helpful tools for app and web developers. Android has a growing selection of third-party applications, which can be acquired by users by downloading and installing the application's APK (Android application package) file, or by downloading them using an application store program that allows users to install, update, and remove applications from their devices. Google Play Store
10600-498: Was described as having "played a pivotal role in Android's history by introducing new software iterations and hardware standards across the board", and became known for its " bloat-free " software with "timely ... updates". At its developer conference in May 2013, Google announced a special version of the Samsung Galaxy S4 , where, instead of using Samsung's own Android customization, the phone ran "stock Android" and
10706-472: Was designed with the presence of discrete physical buttons as an assumption, therefore a touchscreen cannot completely replace physical buttons". By 2008, both Nokia and BlackBerry announced touch-based smartphones to rival the iPhone 3G , and Android's focus eventually switched to just touchscreens. The first commercially available smartphone running Android was the HTC Dream , also known as T-Mobile G1, announced on September 23, 2008. On November 5, 2007,
10812-472: Was discontinuing development and shut down the infrastructure behind the project. Since Cyanogen Inc. retained the rights to the Cyanogen name, the project rebranded its fork as LineageOS. Similar to CyanogenMod, it does not include any proprietary apps unless the user installs them. It allows Android users who can no longer obtain update support from their manufacturer to continue updating their OS version to
10918-432: Was facing eviction from its office space. Steve Perlman , a close friend of Rubin, brought him $ 10,000 in cash in an envelope, and shortly thereafter wired an undisclosed amount as seed funding. Perlman refused a stake in the company, and has stated "I did it because I believed in the thing, and I wanted to help Andy." In 2005, Rubin tried to negotiate deals with Samsung and HTC . Shortly afterwards, Google acquired
11024-586: Was initially required, but those requirements have been relaxed or eliminated altogether. For example, as Android was developed initially as a phone OS, hardware such as microphones were required, while over time the phone function became optional. Android used to require an autofocus camera, which was relaxed to a fixed-focus camera if present at all, since the camera was dropped as a requirement entirely when Android started to be used on set-top boxes . In addition to running on smartphones and tablets, several vendors run Android natively on regular PC hardware with
11130-466: Was making software for mobile phones. At Google, the team led by Rubin developed a mobile device platform powered by the Linux kernel . Google marketed the platform to handset makers and carriers on the promise of providing a flexible, upgradeable system. Google had "lined up a series of hardware components and software partners and signaled to carriers that it was open to various degrees of cooperation". Speculation about Google's intention to enter
11236-708: Was promised to receive new system updates fast. The device would become the start of the Google Play edition program, and was followed by other devices, including the HTC One Google Play edition, and Moto G Google Play edition. In 2015, Ars Technica wrote that "Earlier this week, the last of the Google Play edition Android phones in Google's online storefront were listed as "no longer available for sale" and that "Now they're all gone, and it looks
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