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  2. 3G Shutdown: 6 Things You Need to Update & How Much It ... - AOL

    www.aol.com/news/3g-shutdown-6-things-much...

    The shutdown of 3G networks won't just impact your old phone. You may need to replace or update other devices, such as certain medical devices, tablets, smartwatches, vehicle SOS services, home...

  3. AT&T outage: Company says network is fully restored after ...

    www.aol.com/news/thousands-t-customers-report...

    AT&T, the nation’s largest carrier, has more than 240 million subscribers. More than 70,000 outages were reported after 8 a.m. ET, according to Downdetector, a website that detects outages. The ...

  4. iPhone 3G - Wikipedia

    en.wikipedia.org/wiki/IPhone_3G

    However, unlike more modern iOS devices, this update again does not provide iPhone 3G owners with access to important features, in this case, the Game Center application. [19] On November 22, 2010, the iPhone 3G received the iOS 4.2 software update (as iOS 4.2.1), which introduced features such as YouTube voting, and security fixes.

  5. Cellular frequencies in the United States - Wikipedia

    en.wikipedia.org/wiki/Cellular_frequencies_in...

    The 700 MHz band was auctioned in early 2008 using spectrum previously used by television stations' analog broadcasts, with Verizon Wireless and AT&T Mobility winning the majority of available spectrum. Qualcomm and Echostar were winners of a significant amount of broadcast-oriented spectrum. Verizon Wireless will use the upper band of the 700 ...

  6. List of mobile virtual network operators in the United States

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.

  7. AT&T Mobility - Wikipedia

    en.wikipedia.org/wiki/AT&T_Mobility

    On February 22, 2022, AT&T discontinued its 3G UMTS network [53] AT&T operates the second-largest 5G network in the U.S. with approximately 30% of the nation covered. [61] 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. [62]

  8. UMTS - Wikipedia

    en.wikipedia.org/wiki/UMTS

    The Universal Mobile Telecommunications System (UMTS) is a 3G mobile cellular system for networks based on the GSM standard. [1] Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the International Telecommunication Union IMT-2000 standard set and compares with the CDMA2000 standard set for networks based on the competing cdmaOne technology.

  9. Preferred Roaming List - Wikipedia

    en.wikipedia.org/wiki/Preferred_Roaming_List

    This allows the phone to choose the best roaming carriers, particularly "roaming partners" with whom the home carrier has a cost-saving roaming agreement, rather than using non-affiliated carriers. PRL files can also be used to identify home networks along with roaming partners, thus making the PRL an actual list that determines the total ...