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  2. Comparison of mobile phone standards - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_mobile_phone...

    In 3G, the most prevalent technology was UMTS with CDMA-2000 in close contention. All radio access technologies have to solve the same problems: to divide the finite RF spectrum among multiple users as efficiently as possible. GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM.

  3. iPhone 5 - Wikipedia

    en.wikipedia.org/wiki/IPhone_5

    The iPhone 5 is shipped with iOS 6, which was released on September 19, 2012. [34] Many of the iPhone 5 's features that work specifically with the included iOS 6.0 operating system only worked in certain territories on release. [36] Apple has said this is a rolling program, which will take longer to implement across more regions. [37]

  4. List of iPhone models - Wikipedia

    en.wikipedia.org/wiki/List_of_iPhone_models

    The iPhone, developed by Apple Inc., is a line of smartphones that combine a mobile phone, digital camera, personal computer, and music player into one device. Introduced by then-CEO Steve Jobs on January 9, 2007, the iPhone revolutionized the mobile phone industry with its multi-touch interface and lack of physical keyboard.

  5. Mobile network codes in ITU region 3xx (North America)

    en.wikipedia.org/wiki/Mobile_network_codes_in...

    CDMA: Former Cellular 29 Plus; [87] acquired by Chat Mobility in 2009; [186] Iowa 311: 440: Verizon Wireless: Not operational: CDMA: Former Bluegrass Cellular; Kentucky [87] [163] 311: 450: PTCI: Panhandle Telecommunication Systems Inc. Operational: GSM 1900 / LTE 700: Also known as Panhandle Telephone Cooperative, Inc.; Oklahoma [87] [8] 311: ...

  6. iPhone 5s - Wikipedia

    en.wikipedia.org/wiki/IPhone_5s

    Apple stated in their event that they sold 30 million 4-inch iPhones in 2015, even as that form factor was succeeded as the flagship iPhone by the redesigned larger display 4.7/5.5-inch iPhone 6 and 6 Plus back in September 2014. Furthermore, the 5/5s design was regarded as "long been the golden child of Apple phone design and a benchmark for ...

  7. Cellular frequencies - Wikipedia

    en.wikipedia.org/wiki/Cellular_frequencies

    In Russia and some other countries, local carriers received licenses for 450 MHz frequency to provide CDMA mobile coverage area. Many GSM phones support three bands (900/1,800/1,900 MHz or 850/1,800/1,900 MHz) or four bands (850/900/1,800/1,900 MHz), and are usually referred to as tri-band and quad-band phones, or world phones; with such a ...

  8. Code-division multiple access - Wikipedia

    en.wikipedia.org/wiki/Code-division_multiple_access

    Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel.

  9. iPhone 5c - Wikipedia

    en.wikipedia.org/wiki/IPhone_5c

    The iPhone 5c is a variant of the iPhone 5, with similar hardware specifications but a hard-coated polycarbonate shell instead of the aluminum of the original iPhone 5. The iPhone 5c was available in several color options and shipped with iOS 7. The device was released at a lower price point than the new flagship 5s; unlike Apple's usual ...