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49-652: Several variants of the phone were released, with different processors, RAM capacity, cameras, dual SIM , NFC and 4G LTE support depending on the country. North American and certain Eurasian variants of the K10 (K420DS, K420N, K425, K428SG, L61AL, L62VL and MS428) run on a Qualcomm Snapdragon 410, while the K430DS, K430DSF, K430DSY and the Brazilian-market K430TV models use a MediaTek MT6753. The K10 has

98-508: A "standby" state for automatic switching, or have two transceivers to maintain both network connections at once. Dual SIM phones are mainstream in many countries where phones are normally sold unlocked. Dual SIMs are popular for separating personal and business calls, in locations where lower prices apply to calls between clients of the same provider, where a single network may lack comprehensive coverage, and for travel across national and regional borders. In countries where dual SIM phones are

147-746: A 5.3-inch (130 mm) IPS LCD touchscreen, and comes in two distinct variations that differ primarily in the internal hardware. The K42x version, sold by T-Mobile, AT&T and MetroPCS in the United States, in Europe as the K420N and in India as the K420DS, has Qualcomm's Snapdragon 410 system-on-chip ; LG has also released the K430x variant of the phone in select markets—while sharing the same form factor as

196-659: A blocked IMEI lookup service for Australian customers. In the UK, a voluntary charter operated by the mobile networks ensures that any operator's blocklisting of a handset is communicated to the CEIR and subsequently to all other networks. This ensures that the handset is quickly unusable for calls, at most within 48 hours. Some UK Police forces, including the Metropolitan Police Service , actively check IMEI numbers of phones found involved in crime. In New Zealand,

245-526: A blocklist, depending on local arrangements. This would typically include quoting a password chosen at the time of blocklisting. Law enforcement and intelligence services can use an IMEI number as input for tracking devices that are able to locate a cell phone with an accuracy of a few meters. Saudi Arabian government agencies have reportedly used IMEI numbers retrieved from cell phone packaging to locate and detain women who fled Saudi Arabia's patriarchal society in other countries. An IMEI number retrieved from

294-431: A certain manner, and support for smart covers where part of the screen is visible to display notifications or incoming calls which the user can swipe up or down to answer or reject it, respectively. Reception for the K10 has been mixed to positive upon release, with most reviewers noting its performance and build quality but criticizing the price, camera quality and lack of USB OTG support. Ajay Kumar of PC Magazine gave

343-585: A database that is updated by all major mobile network operators in Latvia. In some countries, such blocklisting is not customary. In 2012, major network companies in the United States, under government pressure, committed to introducing a blocklisting service, but it's not clear whether it will interoperate with the CEIR. GSM carriers AT&T and T-Mobile began blocking newly reported IMEIs in November 2012. Thefts reported prior to November 2012 were not added to

392-528: A formally allocated IMEI number range for a GSM terminal does not mean that the terminal is approved or complies with regulatory requirements. The linkage between regulatory approval and IMEI allocation was removed in April 2000, with the introduction of the European R&;TTE Directive. Since that date, IMEIs have been allocated by BABT (or one of several other regional administrators acting on behalf of

441-645: A hybrid dual SIM tray that accepts one micro SIM card and one nano SIM card, the latter of which can be swapped for a MicroSD card. Dual SIM phones have become popular especially with business users due to reduced costs by being able to use two different networks, with one possibly for personal use or based on signal strength or cost, without requiring several phones. Some sub-contract Chinese companies supply inexpensive dual SIM handsets, mainly in Asian countries. The phones, which also usually include touch screen interfaces and other modern features, typically retail for

490-461: A much lower price than branded models. While some such phones are sold under generic names or are rebadged by smaller companies under their own brand, numerous manufacturers, especially in China, produce phones, including dual SIM models, under counterfeit trademarks such as those of Nokia or Samsung, either as cosmetically-identical clones of the originals, or in completely different designs, with

539-507: A numeric identifier , usually unique , for 3GPP and iDEN mobile phones , as well as some satellite phones . It is usually found printed inside the battery compartment of the phone but can also be displayed on-screen on most phones by entering the MMI Supplementary Service code *#06# on the dialpad, or alongside other system information in the settings menu on smartphone operating systems. GSM networks use

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588-402: A single physical SIM. For originating communications via the mobile phone network, the way to choose which SIM is used may vary on different phones. For example, one can be selected as primary or default for making calls, and one (which could be the same one) for data. Apple phones supporting dual SIMs can be set up to automatically use a specific SIM for each contact or the same one used for

637-640: A two-digit Final Assembly Code (FAC), which was a manufacturer-specific code indicating the location of the device's construction. From January 1, 2003 until April 1, 2004, the FAC for all phones was 00. After April 1, 2004, the Final Assembly Code ceased to exist and the Type Allocation Code increased to eight digits in length. In any of the above cases, the first two digits of the TAC are

686-562: Is a function of all other digits in the IMEI. The Software Version Number (SVN) of a mobile is not included in the calculation. The purpose of the Check Digit is to help guard against the possibility of incorrect entries to the CEIR and EIR equipment. The presentation of the Check Digit both electronically and in printed form on the label and packaging is very important. Logistics (using bar-code reader) and EIR/CEIR administration cannot use

735-536: Is active at any time; it is not possible to receive or make calls on the inactive SIM. Dual SIM standby phones allow both SIMs to be accessed by using time multiplexing . When one SIM is in active use, for example on a call, the modem locks to it, leaving the other SIM unavailable. Older examples of dual-SIM standby phones include the Samsung Galaxy S Duos , the Sony Xperia M2 Dual, and

784-521: Is also an example of rebadged Chinese Dual-SIM phones sold in few European countries as well as in North-West Africa. Dual SIM phones have been rare in countries where phones have been usually sold on contract, as the carriers selling those phones prevent SIMs from competing carriers from being used with the phones. However, dual SIMs have been popular in locations where people normally buy phones directly from manufacturers. In such places there

833-504: Is an un-authenticated mobile identifier (as opposed to IMSI, which is routinely authenticated by home and serving mobile networks.) Using a spoofed IMEI can thwart some efforts to track handsets, or target handsets for lawful intercept. Australia was the first nation to implement IMEI blocking across all GSM networks, in 2003. In Australia the Electronic Information Exchange (EIE) Administration Node provides

882-410: Is little lock-in to carrier networks, and the costs of having two phone numbers are much lower. Dual SIM phones allow separate numbers for personal and business calls on the same handset. Access to multiple networks is useful for people living in places where a single network's coverage may prove inadequate or unreliable. They are also useful in places where lower prices apply to calls between clients of

931-495: The GSM Association ) to legitimate GSM terminal manufacturers without the need to provide evidence of approval. When someone has their mobile equipment stolen or lost, they can ask their service provider to block the phone from their network, and the operator may do so, especially if required by law. If the local operator maintains an Equipment Identity Register (EIR), it adds the device IMEI to it. Optionally, it also adds

980-524: The MetroPCS variant of the K10 a mixed review, praising the device's build and price, but noted the camera quality along with the antiquated processor used which hampered performance in system-intensive games like Grand Theft Auto: San Andreas . In a similarly mixed review, Ashish Mohta of TechPP also praised the K10's performance, yet criticized the camera, its price compared to other mid-range devices, and lack of quick charging support. Florian Wimmer of

1029-633: The Nokia C2-00 , Nokia C1-00 and Nokia C2-03 and most notably the Nokia X , phones from Samsung's Duos series , and the Sony Xperia Z3 Dual , Sony Xperia C and tipo dual . Apple added dual SIM support in its 2018 iPhone XS models, with models sold in China containing two physical SIM slots, and models sold elsewhere supporting dual SIM by means of (Embedded) eSIM alongside

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1078-645: The Reporting Body Identifier , which identifies the GSMA-approved group that allocated the TAC. The RBI numbers are allocated by the Global Decimal Administrator. IMEI numbers being decimal helps distinguish them from an MEID , which is hexadecimal and always has 0xA0 or larger as the first two hexadecimal digits. For example, the old style IMEI code 35-209900-176148-1 or IMEISV code 35-209900-176148-23 tells us

1127-591: The Samsung Galaxy Nexus and S III which emulated a SIM-free CDMA activation experience and lacked roaming capabilities in 3GPP -only countries. However, the IMEI only identifies the device and has no particular relationship to the subscriber. The phone identifies the subscriber by transmitting the International mobile subscriber identity (IMSI) number, which is stored on a SIM card that can, in theory, be transferred to any handset. However,

1176-723: The United Kingdom , under the Mobile Telephones (Re-programming) Act, changing the IMEI of a phone, or possessing equipment that can change it, is considered an offence under some circumstances. A bill was introduced in the United States by Senator Chuck Schumer in 2012 that would have made the changing of an IMEI illegal, but the bill was not enacted. IMEI blocking is not the only way to fight phone theft. Instead, mobile operators are encouraged to take measures such as immediate suspension of service and replacement of SIM cards in case of loss or theft. The existence of

1225-543: The iPhone XS , XS Max and iPhone XR . Dual SIM dual active (DSDA) phones have two transceivers, and can receive calls on both SIM cards, at the cost of increased battery consumption and more complex hardware. One example is the HTC Desire 600 . Some telephones have a primary and a secondary SIM slot that support different generations of connectivity. For example, 4G and 3G primary, and 3G and 2G secondary, or 5G and 5G, or 5G and 4G. Selecting either of

1274-453: The 13 MP sensor. In addition, the Brazilian-market K430TV comes with a built-in ISDB-T receiver. The K10 runs on either Android 5.1.1 "Lollipop" or Android 6.0.1 "Marshmallow" depending on the model, along with LG's proprietary user interface. Among other things, the phone's operating system supports knock-on gestures allowing the user to unlock the device by tapping on the display in

1323-573: The Check Digit unless it is printed outside of the packaging, and on the ME IMEI/Type Accreditation label. The check digit is not transmitted over the radio interface, nor is it stored in the EIR database at any point. Therefore, all references to the last three or six digits of an IMEI refer to the actual IMEI number, to which the check digit does not belong. The check digit is validated in three steps: Conversely, one can calculate

1372-572: The German-language edition of Notebook Check stated that the K10 wants to "bring style to the lower middle-class", but was also critical of the phone's camera and display, describing it as "standing in the way". Dual SIM Some mobile phones support use of two SIM cards , described as dual SIM operation. When a second SIM card is installed, the phone may allow users to switch between two separate mobile network services manually, have hardware support for keeping both connections in

1421-533: The IMEI by choosing the check digit that would give a sum divisible by 10. For the example IMEI 49015420323751 ? , To make the sum divisible by 10, we set x = 8, so the complete IMEI becomes 49015420323751 8 . The Broadband Global Area Network (BGAN), Iridium and Thuraya satellite phone networks all use IMEI numbers on their transceiver units as well as SIM cards in much the same way as GSM phones do. The Iridium 9601 modem relies solely on its IMEI number for identification and uses no SIM card; however, Iridium

1470-500: The IMEI number to identify valid devices, and can stop a stolen phone from accessing the network. For example, if a mobile phone is stolen, the owner can have their network provider use the IMEI number to blacklist the phone. This renders the phone useless on that network and sometimes other networks, even if the thief changes the phone's SIM card. Devices without a SIM card slot or eSIM capability usually do not have an IMEI code, except for certain early Sprint LTE devices such as

1519-566: The IMEI to shared registries, such as the Central Equipment Identity Register (CEIR), which blocklists the device with other operators that use the CEIR. This blocklisting makes the device unusable on any operator that uses the CEIR, which makes mobile equipment theft pointless, except for parts. To make blocklisting effective, the IMEI number is supposed to be difficult to change. However, a phone's IMEI may be easy to change with special tools. In addition, IMEI

LG K10 - Misplaced Pages Continue

1568-626: The K42x models, the K430 model uses MediaTek 's MT6753 system-on-chip containing a 1.3 - 1.5 GHz octa-core ARM Cortex-A53, and a Mali-T720 GPU. The K10 has a maximum of 2 GB RAM, depending on the model—the K430DSF only comes with 1 GB; the K420N and North American K425, K428SG and MS428 variants come with 1.5 GB and the K420DS and K430DSY has 2 GB of RAM. All variants come with either 8 or 16 GB of onboard storage, depending on

1617-557: The NZ Telecommunications Forum Inc provides a blocked IMEI lookup service for New Zealand consumers. The service allows up to three lookups per day and checks against a database that is updated daily by the three major mobile network operators. A blocked IMEI cannot be connected to any of these three operators. In Latvia the SIA "Datorikas institūts DIVI" provides a blocked IMEI lookup service for checks against

1666-491: The SIMs as primary is usually possible without physically swapping the SIMs. Some phone models utilize a "hybrid" SIM tray, which can hold either two SIM cards, or one SIM card and one MicroSD memory card. The Huawei Mate 20 range introduced a proprietary memory card format called Nano Memory , exactly the size and shape of a nano SIM card. Some devices accept dual SIMs of different form factors. The Xiaomi Redmi Note 4 has

1715-753: The United States used an allowlist of devices where a user had to register their IMEI and SIM card before a device can be used, despite no US law mandating it. If a user changed their device, they had to register their new IMEI and SIM card. This isn't the case with other CDMA carriers like Verizon which only used allowlists for 3G and T-Mobile does not use an allowlist but instead a blocklist, including for former Sprint customers. AT&T and Telus also use an allowlist for VoLTE access, but do not require IMEI registration by customers. Instead, phone manufacturers are required to register their devices into AT&T's or Telus' databases, and customers are able to freely swap SIM cards into any allowlisted device. This has

1764-530: The database. The CTIA refers users to websites at www.stolenphonechecker.org and the GSMA where consumers can check whether a smartphone has been reported as lost or stolen to its member carriers. The relationship between the former and any national or international IMEI blocklists is unclear. It is unclear whether local barring of IMEI has any positive effect, as it may result in international smuggling of stolen phones. IMEIs can sometimes be removed from

1813-453: The following: TAC : 35-2099 - issued by the BABT (code 35) with the allocation number 2099 FAC : 00 - indicating the phone was made during the transition period when FACs were being removed. SNR : 176148 - uniquely identifying a unit of this model CD : 1 so it is a GSM Phase 2 or higher SVN : 23 - The "software version number" identifying the revision of the software installed on

1862-512: The last call to the contact, for iMessage, and for FaceTime. Typically when dialling or sending a message an option to select a SIM is displayed. Prior to the introduction of dual SIM phones, adapters that fit in the SIM card slot and hold two SIMs, with provision to switch between them when required. In dual SIM switch phones, such as the Nokia C1-00 , only one SIM, selected by the user,

1911-473: The logo of a notable manufacturer present in order to take advantage of brand recognition or brand image. Dual SIM phones are common in developing countries , especially in China , Southeast Asia and the Indian subcontinent , with local firms like Karbonn Mobiles , LYF , Micromax and Cherry Mobile releasing feature phones and smartphones incorporating multiple SIM slots. The French Wiko Mobile

1960-550: The network as zero. This guideline seems to have disappeared for the format valid from 2003 onwards. As of 2004 , the format of the IMEI is AA-BBBBBB-CCCCCC-D , although it may not always be displayed this way. The IMEISV does not have the Luhn check digit but instead has two digits for the Software Version Number (SVN), making the format AA-BBBBBB-CCCCCC-EE Prior to 2002, the TAC was six digits and followed by

2009-482: The network's ability to know a subscriber's current, individual device enables many network and security features. Dual SIM enabled phones will normally have two IMEI numbers, except for devices such as the Pixel 3 (which has an eSIM and one physical SIM) which only allow one SIM card to be active at once. Many countries have acknowledged the use of the IMEI in reducing the effect of mobile phone thefts. For example, in

LG K10 - Misplaced Pages Continue

2058-538: The norm, people who require only one SIM leave the second SIM slot empty. Dual SIM phones usually have two unique IMEI numbers, one for each SIM slot. Devices that use more than two SIM cards have also been developed and released, notably the LG A290 triple SIM phone, and even handsets that support four SIMs, such as the Cherry Mobile Quad Q70 . The first phone to include dual SIM functionality

2107-551: The origin, model, and serial number of the device. The structure of the IMEI/SV is specified in 3GPP TS 23.003 . The model and origin comprise the initial 8-digit portion of the IMEI/SV, known as the Type Allocation Code (TAC). The remainder of the IMEI is manufacturer-defined, with a Luhn check digit at the end. For the IMEI format prior to 2003, the GSMA guideline was to have this Check Digit always transmitted to

2156-602: The phone. 99 is reserved. By contrast, the new style IMEI code 49-015420-323751-8 has an 8-digit TAC of 49-015420. The new CDMA Mobile Equipment Identifier ( MEID ) uses the same basic format as the IMEI. The last number of the IMEI is a check digit , calculated using the Luhn algorithm , as defined in the IMEI Allocation and Approval Guidelines : The Check Digit shall be calculated according to Luhn formula (ISO/IEC 7812). (See GSM 02.16 / 3GPP 22.016). The Check Digit

2205-474: The problem that imported phones and some non-imported phones such as older OnePlus or CDMA carrier-variant devices will not work for voice calls even if they have the LTE/5G bands for AT&T and Telus and support VoLTE on competitors or via VoLTE roaming. The IMEI (15 decimal digits: 14 digits plus a check digit) or IMEISV (16 decimal digits: 14 digits plus two software version digits) includes information on

2254-711: The remnants of a Nokia 5110 was used to trace and identify the perpetrators behind the 2002 Bali bombings . Some countries use allowlists instead of blocklists for IMEI numbers, so that any mobile phone needs to be legally registered in the country in order to be able to access mobile networks of the country, with possible exceptions for international roaming and a grace period for registering. These include Chile, Turkey, Azerbaijan, Colombia, and Nepal. Other countries that have adopted some form of mandatory IMEI registration include India, Pakistan, Indonesia, Cambodia, Thailand, Iran, Nigeria, Ecuador, Ukraine, Lebanon, and Kenya. Prior to their merger with T-Mobile , Sprint in

2303-401: The same provider. Dual SIM phones allow users to keep separate contact lists on each SIM, and allow easier roaming by being able to access a foreign network while keeping the existing local card. Vendors of foreign SIMs for travel often promote dual-SIM operation, with a home country and local SIM in the same handset. IMEI The International Mobile Equipment Identity ( IMEI ) is

2352-623: The variant. In addition to the internal storage, the K10's storage capacity can be expanded using a microSDXC card. Depending on the country, the K10 may come with 4G LTE support—the L62VL variant sold by Tracfone as the LG Premier LTE comes with support for CDMA2000 and 4G LTE, near-field communication , which is unavailable on the K430x models, a 13 MP rear-facing camera and a 5 MP front-facing camera for video calls; North American models only come with an 8 MP camera in lieu of

2401-523: Was the Benefon Twin, released by Benefon in 2000. More dual SIM phones were introduced in about 2007, most of them coming from small Chinese firms producing phones using Mediatek systems-on-a-chip . They started to attract mainstream attention. Such phones were initially eschewed by major manufacturers due to potential pressure from telecommunications companies, but from about 2010 Nokia , Samsung , Sony and several others followed suit, with

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