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50-582: Quad-band GSM / GPRS Class 10 (4+1/3+2 slots), 32–48 kbit/s/ EDGE : 850 / 900 / 1800 / 1900 MHz 3G The Sony Ericsson Xperia X10 Mini —also known as the E10i (international) or E10a (Americas)—is a smartphone by Sony Ericsson in the Xperia series . It is the second Sony Ericsson smartphone to run the Android operating system , and at the time was the smallest Android handset ever made. The X10 Mini

100-513: A GSM-1900 network prior to the acquisition of AT&T Wireless , through a joint venture known as GSM Facilities . The network sharing agreement allowed Cingular to offer local service in northern New Jersey and New York City and T-Mobile USA to offer service in California and Nevada. On May 25, 2004, Cingular and T-Mobile USA announced their intention to dissolve the agreement contingent on Cingular's successful acquisition of AT&T Wireless,

150-614: A customer base of 46 million people at the time, making Cingular the largest wireless provider in the United States. AT&T Wireless was then legally renamed New Cingular Wireless Services . Shortly after, new commercials were shown with the "AT&T" transforming into the Cingular logo, and with the Cingular logo's text turned blue to acknowledge the change. Some of the companies that comprised Cingular, such as BellSouth Mobility , ceased to exist when they were legally merged into

200-625: A deal estimated to be worth $ 39 billion in cash and stock. AT&T said the deal was expected to close in 12 months and was subject to regulatory approval. As of June 2011, it was being examined by the FCC. On August 31, 2011, the United States Department of Justice formally announced that it had filed a lawsuit to block the merger. On November 22, 2011, FCC Chairman Julius Genachowski recommended sending AT&T's proposed T-Mobile acquisition to an administrative law judge for review and

250-662: A device that supports a fifth frequency band, commonly the 1700/2100 MHz band in much of the world. The Advanced Wireless Services (AWS) 1700 MHz band is also seeing increased usage. In the United States only, the two largest carriers are instead implementing 4G LTE in the 700 MHz band, which was reallocated from TV broadcasting during the DTV transition . TV stations were forced to move to lower UHF and even far worse VHF frequencies with poorer mobile TV and even regular terrestrial TV performance , because

300-586: A device that supports four frequency bands: the 850 and 1900 MHz bands, which are used in the Americas, and 900 / 1800, which are used in most other parts of the world. Most GSM / UMTS phones support all four bands, while most CDMA2000 /1xRTT phones (mostly North America and voice transmission only) do not, and so are considered only dual-band devices. A few phones support both of the domestic frequencies but only one foreign one for limited roaming , making them tri-band phones. The term penta-band describes

350-563: A hearing. On November 23, 2011, AT&T withdrew its application with the FCC regarding the acquisition of T-Mobile USA. They also indicated that they would recognize a $ 4 billion dollar accounting charge in the event of a deal collapse. That charge covers a $ 3 billion cash breakup fee and $ 1 billion as the market value for the spectrum they were required to transfer to T-Mobile if the deal failed to complete. On August 2, 2012, AT&T announced its intent to acquire NextWave Wireless . On January 22, 2013, AT&T announced its intent to acquire

400-466: Is also in the process of rolling out its 5G network based on the NR specification. Cingular, the predecessor to AT&T, supported legacy D-AMPS/TDMA and analog wireless networks. In March 2006, Cingular announced that these networks would be shut down by February 2008. As of March 31, 2007, Cingular ended TDMA supported for GoPhone (pre-paid) customers. On July 15, 2007, AT&T TDMA on 1900 MHz

450-581: Is headquartered in Brookhaven, Georgia . Originally known as Cingular Wireless (a joint venture between SBC Communications and BellSouth ) from 2000 to 2007, the company acquired the old AT&T Wireless in 2004; SBC later acquired the original AT&T and adopted its name. Cingular became wholly owned by AT&T in December 2006 as a result of AT&T's acquisition of BellSouth. In January 2007, Cingular confirmed it would rebrand itself under

500-476: Is planned through 2023. AT&T plans to cover 200 million people with 5G+ by the end of 2023. During the first quarter of 2006, Telephia reported that during an extensive nationwide test of major wireless carriers in 350 metropolitan markets around the country, Cingular dropped the fewest calls across the country. In turn, Cingular began aggressively advertising the "Allover Network", citing Telephia as "the leading independent research company." Telephia's report

550-543: Is the world's largest wireless network test program, initially refused to provide details on its study, and a spokesman for the company has said, according to the Boston Globe , that "Cingular shouldn't have even mentioned the company's name to a reporter." The research company later stated that Cingular did, indeed, have a "statistically significant lower dropped-call rate than the competition across some market/time period groupings", but that Telephia had "no knowledge of

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600-530: The Communications Workers of America . The CWA represented roughly 15,000 of the previous 20,000 formerly AT&T Wireless employees as of early 2006. As of the end of 2009, the CWA website claims that roughly 40,000 workers of AT&T Mobility are represented by the union. Cingular Wireless was founded in 2000 as a joint venture of SBC Communications and BellSouth . The joint venture created

650-476: The Northeast Corridor . Verizon Wireless formerly held frequencies just above TV channel 51, which is still in use, causing adjacent-channel interference that is preventing the carrier from using them until the planned top-down spectrum repacking occurs. The channel 52 spectrum was later purchased by T-Mobile US who now uses this spectrum for their network. Verizon now uses higher blocks within

700-686: The U.S. Department of Justice , the Federal Communications Commission (FCC), and AT&T Mobility's competitors (such as Sprint Corporation ) opposed the move on the grounds that it would substantially reduce competition in the cellular network market. In December 2011, in the face of both governmental and widespread consumer opposition, AT&T withdrew its offer to complete the merger. AT&T currently offers 3 tiers of its Unlimited Your Way plan, AT&T Unlimited Premium® PL, AT&T Unlimited Extra® EL, or AT&T Unlimited Starter® SL. Customers can also choose either

750-486: The 700 MHz band has better radio propagation characteristics that allow mobile phone signal to penetrate deeper into buildings with less attenuation than the 1700 MHz or 2100 MHz bands. AT&T Mobility devices use former TV channel 53 and 54 nationwide and has purchased spectrum from former TV channel 55 nationwide (purchased from Qualcomm 's defunct MediaFLO pay TV service), and also channel 56 in densely populated areas such as California and

800-581: The AT&;T Value Plus VL or AT&T 4 GB plans. All plans come with unlimited talk and text, with unlimited data on all except the AT&T 4 GB plan. The higher tier plans include premium data that offers superior service, up to the allotted limit on each line during a bill cycle, plus other features like Mobile Hotspot and more. The AT&T Unlimited Premium® PL plan also includes unlimited talk, text, and data in 20 Latin American countries including

850-615: The AT&T name. Although the legal corporate name change occurred immediately, for both regulatory and brand-awareness reasons both brands were used in the company's signage and advertising during a transition period. The transition concluded in late June, just prior to the rollout of the Apple iPhone . On March 20, 2011, AT&T Mobility announced its intention to acquire T-Mobile US from Deutsche Telekom for $ 39 billion. If it had received government and regulatory approval, AT&T would have had more than 130 million subscribers. However,

900-482: The Cingular Interactive division, which became Velocita Wireless . Velocita was later purchased by Sprint Nextel . AT&T also offered Enhanced Push To Talk (PTT) services on smartphones. The original PTT service was sunset. The AT&T wireless data network began in 2002 as a Cingular initiative called "Project Genesis" that involved a GPRS overlay of the entire wireless network. Project Genesis

950-589: The Cingular network was transferred to T-Mobile USA, with Cingular continuing work on the GSM facilities at AT&T Wireless sites. AT&T has a global sub-sea Tier-1 fiber network switching facility on St. Croix in the U.S. Virgin Islands , in conjunction with University of the Virgin Islands Research and Technology Park . The following is a list of known frequencies that AT&T employs in

1000-484: The Dominican Republic, included at no extra charge. As of January 8, 2016, AT&T no longer offers two-year contracts for subsidized smartphones on consumer accounts. Customers who currently have two-year contracts are grandfathered until they upgrade to a new device, in which case they will have to choose from AT&T's NEXT installment plans for smartphones. Unlimited data plans may be throttled based on

1050-412: The FCC gave its final approval. The following month, AT&T announced that it would phase out the Cingular brand across all of its services and replace it with AT&T, with an accompanying advertising campaign branding the combined company as "The New AT&T." Commercials featured the orange Cingular "Jack" logo encircling the AT&T globe logo several times, dragging its blue bars behind it to form

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1100-651: The U.S. retail wireless operations of Atlantic Tele-Network , doing business as Alltel , for $ 780 million. On June 24, 2014, Plateau Wireless announced the sale of assets and operations in eastern New Mexico and west Texas to AT&T, including wireless spectrum and 40,000 customers. In November 2014 and January 2015, AT&T acquired the Mexican wireless carriers Iusacell and Nextel Mexico to form AT&T Mexico . On October 9, 2019, Liberty Cablevision of Puerto Rico's parent company (Liberty Latin America), announced

1150-482: The United States. The following chart lists the networks that AT&T previously operated. As a result of its formation through mergers and acquisitions, as well as the rapid technological change in the wireless industry, AT&T operates the second-largest digital voice and data network within its United States footprint. AT&T's network footprint supports 4G and uses LTE / LTE-Advanced for simultaneous packet switched voice and data communications. AT&T

1200-539: The X10 that was upgraded to Android 2.3 . Officially, both the X10 Mini and X10 Mini Pro can not be upgraded beyond Android 2.1, although unofficially, ports of CyanogenMod , among others, allow them to be upgraded to 2.2 , 2.3, 4.0 , and 4.1 . These updates require rooting of the phone (which has warranty implications) and potentially flashing of a third-party kernel. Quad-band The term quad-band describes

1250-587: The acquisition of AT&T Wireless Services in Puerto Rico and the U.S. Virgin Islands, in a $ 1.95 billion deal. The sale was completed on November 2, 2020. In May 2021, the company began promoting AT&T and Liberty as a unified brand. In September 2021, Liberty began phasing out the AT&T brand and introduced a new logo. On February 22, 2024, a massive outage affected customers nationwide. In California , Nevada , Northern New Jersey and New York City , Cingular and T-Mobile USA maintained and shared

1300-432: The brand to market to business customers. Cingular president Stan Sigman concurred with BellSouth's position, indicating that the Cingular brand would continue but be sold under the AT&T brand where offered in packages with other AT&T services, such as data and wireline telephony. However, AT&T announced on March 5, 2006, that it would acquire BellSouth. The acquisition was finalized on December 29, 2006, when

1350-604: The deal, a high-ranking source allegedly close to the sale pointed the Barbados Daily Nation Newspaper towards some SEC filings made by Cingular which were said to establish an idea of the approximate sale price of the deal. According to the SEC filings Cingular was paid around $ 122 million, with much of that cost going towards the purchase of the former AT&T Wireless assets in Barbados by Digicel. At

1400-425: The end of 2006. As of early 2009, AT&T Mobility has completed its upgrade of the 3G to HSUPA , In 2011, it was reported that AT&T would upgrade its network to HSPA+ throughout the year, which it would market as offering 4G -grade speeds. On September 18, 2011, AT&T first launched LTE service in 5 U.S. metropolitan areas, with plans for serving 15 markets by the end of the year. AT&T's LTE rollout

1450-404: The end of the year. On February 22, 2022, AT&T discontinued its 3G UMTS network AT&T operates the second-largest 5G network in the U.S. with approximately 30% of the nation covered. AT&T uses low, mid, and high band frequencies. Mid and high band 5G is marketed as 5G+ and offers much faster speeds than low band. Continuous expansion of the 5G network, especially mid-band 5G+,

1500-412: The first one million original iPhones." In August 2008, Best Buy announced that it would begin selling the iPhone 3G for use on the AT&T network. In September 2008, AT&T announced that it would also sell the iPhone 3G in Puerto Rico and the U.S. Virgin Islands. The iPhone 4 was released on June 24, 2010. According to Apple, over 1.7 million iPhone 4 units were sold in the first few days, which

1550-471: The former TV band (channels 60 and 61). AT%26T Mobility AT&T Mobility, LLC , also known as AT&T Wireless and marketed as simply AT&T , is an American telecommunications company. It is a wholly owned subsidiary of AT&T Inc. and provides wireless services in the United States . AT&T Mobility is the third largest wireless carrier in the United States , with 116 million subscribers as of September 30, 2024. The company

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1600-522: The globe's blue stripes, before finally disappearing behind it, being backed by the chorus of the Oasis song " All Around the World ". AT&T added the color orange to its signage to reflect the change; AT&T would eventually remove orange in 2015 following another rebranding related to its acquisition of DirecTV . In November 2007, AT&T acquired Dobson Communications , who owned Cellular One and

1650-560: The importance of not dropping calls. That campaign is continuing." On June 29, 2007, Apple 's iPhone was introduced to the United States market, and AT&T was the exclusive carrier for the device within the United States until February 10, 2011, when the iPhone 4 was launched on the Verizon network. Teething problems with AT&T's billing process emerged soon after the iPhone's release, as early adopters started receiving exceptionally detailed monthly telephone bills with one of

1700-424: The most notable being the 300-page iPhone bill that was featured in an online video by YouTube influencer iJustine . Apple launched the iPhone 3G with AT&T on July 11, 2008. Although specific AT&T sales numbers are unavailable, Apple announced that over 1 million iPhone 3G devices were sold during the first three days — in contrast, according to Steve Jobs , Apple's CEO , "It took 74 days to sell

1750-458: The nation's second-largest carrier. Cingular grew out of a conglomeration of more than 100 companies, including 12 well-known regional companies with Bell roots. The 12 companies included: SBC Wireless had previously operated in several northeast markets under the " Cellular One " brand, while BellSouth's wireless operations incorporated the former Houston Cellular . Cingular's lineage can be traced back to Advanced Mobile Phone Service , which

1800-422: The operating company subsidiary AT&T Wireless PCS , which was New Cingular Wireless PCS . First announced on June 22, 2005, Cingular Wireless announced the intention to divest its Caribbean and Bermuda operations and licenses which it acquired from the acquisition of AT&T Wireless, to Irish -owned and Jamaica -based Digicel Group under undisclosed financial terms. In 2006, one year following

1850-451: The original X10 Mini and X10 Mini pro is the replaceable battery, and the pro having slightly larger dimensions (3.5 × 2.0 × 0.7 inches opposed to 3.3 × 2.0 × 0.6 inches). The X10 Mini and X10 Mini pro are designed to look similar and share functionality with the larger Xperia X10 , but are internally very different devices. Both handhelds lack Sony Ericsson's "Mediascape" media-management software, but include "Timescape" as well as

1900-450: The proprietary "Rachael" UI. The X10 Mini/Pro (as well as the X10) originally ran Android 1.6, with an update to 2.1 being rolled out from Sunday 31 October 2010, to Tuesday 30 November 2010. The updated Xperia X10 Mini/Pro is more responsive and faster when compared to older Android version 1.6. However, Sony Ericsson has no plans to upgrade the 2010 Xperia phones beyond Android 2.1, except

1950-429: The specific methodology (markets, time periods or statistical thresholds) that Cingular used for its 'lowest dropped call' claim." While AT&T has abandoned its verbal claim of "The Fewest Dropped Calls" in its commercials, it continues to show situations where two persons are speaking with each other on their phones, and one of the users' call drops. AT&T now states "We are still continuing to run ads that emphasize

2000-570: The terms of the plan. AT&T also allows existing customers to stay on legacy right plans; however, reserves the right to terminate or require a plan change per its terms of service. Within AT&T's 21-state landline footprint, other AT&T services are offered at the AT&T retail stores, including signing up for home phone, internet, and U-verse . AT&T stores outside of its footprint offer wireless services. All AT&T company-owned stores nationwide sell DirecTV . A large number of AT&T Mobility employees are unionized, belonging to

2050-490: The time of the merger, there were two networks: the historic AT&T Blue Network and the Cingular Orange Network. Both networks contained a mix of both TDMA and GSM facilities. Approximately 50,000 cell sites had to be melded together. From a technical standpoint, the "blue" and "orange" networks were considered different networks until integration was completed in 2005. Enhanced Network Selection (ENS)

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2100-549: Was a roaming partner of AT&T, for $ 2.8 billion. The sale added 1.7 million subscribers and expanded AT&T coverage in various suburban and rural markets (including Alaska). On November 7, 2008, AT&T announced its intent to acquire Centennial Wireless for $ 944 million, expanding its coverage in the Midwest, southern U.S., and Puerto Rico. On March 20, 2011, AT&T and Deutsche Telekom announced that AT&T had agreed to acquire T-Mobile USA from Deutsche Telekom in

2150-804: Was a subsidiary of AT&T created in 1978 to provide cellular service nationwide. AMPS was divided among the Regional Bell Operating Companies as part of the Bell System divestiture . With the exception of Pacific Bell and BellSouth Mobility DCS, the digital network consisted of D-AMPS technology. The Pacific Bell and BellSouth Mobility DCS networks used GSM technology on the PCS frequency band (1900 MHz). In October 2007, AT&T's president and chief executive officer Stan Sigman announced his retirement. Ralph de la Vega , group president-Regional Telecom & Entertainment,

2200-613: Was completed by the end of 2004. Later, this network was upgraded to EDGE across the GSM footprint. In 2005, AT&T launched a broadband network known as "BroadbandConnect", based on UMTS and HSDPA , to counter Verizon Wireless and Sprint 's EV-DO networks. UMTS service was launched on December 6, 2005, in Seattle, Portland, San Francisco, Salt Lake City, San Jose, San Diego, Las Vegas, Phoenix, Puerto Rico, Austin, Houston, Dallas, Detroit, Chicago, Boston, Baltimore, and Washington, D.C., and expanded to all major metropolitan markets by

2250-543: Was first revealed on 14 February 2010. Apart from the physical dimensions, the phone also differs feature-wise as compared to the X10 . Text input is done via a virtual keypad on the Mini and a full QWERTY , QWERTZ , or AZERTY slide-out keyboard on the X10 Mini pro. The Sony Ericsson Xperia X10 Mini pro (U20i/U20a) is an upgrade to the X10 Mini with many of the internal specifications being identical. The major differences between

2300-624: Was in stark contrast to the Consumers Union publication, Consumer Reports , based on a survey of 50,000 of its members in 18 cities, which criticized Cingular for static and dropped calls. Furthermore, J.D. Power and Associates consistently ranked Cingular at or near the bottom of every geographical region in its 2006 Wireless Call Quality Study, which is based on a smaller survey of 23,000 wireless users. This campaign had to come to an abrupt end. Telephia, which tests wireless networks by making over 6 million calls per year in what it claims

2350-414: Was named as president and CEO of AT&T Mobility. In February 2004, after a bidding war with Britain's Vodafone Plc (at the time a part-owner of Verizon Wireless), Cingular announced that it would purchase its struggling competitor, AT&T Wireless Services , for $ 41 billion. This was more than twice the company's trading value. The merger was completed on October 26, 2004. The combined company had

2400-637: Was noticeably slower than that of its competitor, Verizon Wireless , with the company stating that its then-proposed acquisition of T-Mobile USA would be necessary. In November 2012, AT&T promoted the network as serving 150 million users, with plans to double its coverage by 2014. On January 1, 2017, AT&T discontinued its 2G GSM network. In April 2017, AT&T announced that it would upgrade its existing LTE networks in selected markets to support LTE Advanced and LTE Advanced Pro features, marketed as "5G Evolution" (5G E ). In January 2018, AT&T stated that it intended to deploy 5G NR service by

2450-468: Was retired, while TDMA on 850 MHz remained. On February 18, 2008, AT&T Mobility officially ended service on their AMPS and remaining TDMA network, except for in areas previously operated by Dobson Communications ; the Dobson AMPS and TDMA network was shut down March 1, 2008. Networks formerly operated by AT&T predecessors including Cingular also include various paging services and

2500-481: Was used to home cellular devices on either the "blue" or "orange" network during this process. On November 21, 2005, Ed Whitacre , then CEO of the newly merged SBC/AT&T, announced plans to market Cingular's service under the AT&;T brand. BellSouth spokesman Jeff Battcher countered that the terms of the joint venture allow either party to sell the service under another name, and that he believes they will be using

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