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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.

3. iPhone 3G - Wikipedia

   en.wikipedia.org/wiki/IPhone_3G

   iPhone. The iPhone 3G is a smartphone designed, developed, and marketed by Apple Inc. It is the second generation of iPhone, successor to the original iPhone, and was introduced on June 9, 2008, at the WWDC 2008 which took place at the Moscone Center in San Francisco.

4. IMSI-catcher - Wikipedia

   en.wikipedia.org/wiki/IMSI-catcher

   IMSI-catcher. Appearance. An international mobile subscriber identity-catcher, or IMSI-catcher, is a telephone eavesdropping device used for intercepting mobile phone traffic and tracking location data of mobile phone users. [ 1 ] Essentially a "fake" mobile tower acting between the target mobile phone and the service provider's real towers, it ...

5. iPhone 3GS - Wikipedia

   en.wikipedia.org/wiki/IPhone_3GS

   The iPhone 3GS retains the design of the 3G, with a glossy plastic back with tapered edges and metal buttons. The 3GS has reflective silver text on the reverse side which matches the silver Apple logo, replacing the 3G's grey text. The iPhone 3GS was available in white and black for 16 GB and 32 GB, although the 8 GB model was only available in ...

6. LTE (telecommunication) - Wikipedia

   en.wikipedia.org/wiki/LTE_(telecommunication)

   In this case, cell sizes may be 1 km (0.62 miles) or even less. Support of at least 200 active data clients (connected users) in every 5 MHz cell. [105] Simplified architecture: The network side of E-UTRAN is composed only of eNode Bs. Support for inter-operation and co-existence with legacy standards (e.g., GSM/EDGE, UMTS and CDMA2000).

7. 3GPP - Wikipedia

   en.wikipedia.org/wiki/3GPP

   The 3rd Generation Partnership Project (3GPP) is an umbrella term for a number of standards organizations which develop protocols for mobile telecommunications. Its best known work is the development and maintenance of: [1] GSM and related 2G and 2.5G standards, including GPRS and EDGE. UMTS and related 3G standards, including HSPA and HSPA+.