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2. Mobile phone feature - Wikipedia

   en.wikipedia.org/wiki/Mobile_phone_feature

   Multi-band phones have been valuable to enable roaming whereas multi-mode phones helped to introduce WCDMA features without customers having to give up the wide coverage of GSM. Almost every single true 3G phone sold is actually a WCDMA/GSM dual-mode mobile. This is also true of 2.75G phones such as those based on CDMA-2000 or EDGE.

3. SIM lock - Wikipedia

   en.wikipedia.org/wiki/SIM_lock

   SIM lock. A SIM lock, simlock, network lock, carrier lock or (master) subsidy lock is a technical restriction built into GSM and CDMA [ 1 ] mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks. This is in contrast to a phone (retrospectively called SIM ...

4. Samsung Galaxy S4 - Wikipedia

   en.wikipedia.org/wiki/Samsung_Galaxy_S4

   A – 800, 1900 MHz (select carrier models also support the AWS 1700/2100 MHz band) The Samsung Galaxy S4 is an Android smartphone produced by Samsung Electronics as the fourth smartphone of the Samsung Galaxy S series and was first shown publicly on March 14, 2013, at Samsung Mobile Unpacked in New York City.

5. Samsung SCH-U470 - Wikipedia

   en.wikipedia.org/wiki/Samsung_SCH-U470

   Body (when worn): 0.558 W/kg. The Samsung SCH-u470, or Juke and Verizon Wireless Juke, is a mobile phone offered exclusively by Verizon Wireless. It was announced on 2 October 2007, and released that same year on Q4 in three colors: red, teal, and navy (blue). [1] The phone is a music player when closed, and can be swiveled for use of the ...

6. Motorola StarTAC - Wikipedia

   en.wikipedia.org/wiki/Motorola_StarTAC

   The StarTAC is a series of mobile phones released by Motorola starting in 1996. It is the successor of the MicroTAC, a semi- clamshell design first launched in 1989. [2] Whereas the MicroTAC's flip folded down from below the keypad, the StarTAC folded up from above the display. The StarTAC was among the first mobile phones to gain widespread ...

7. Soft handover - Wikipedia

   en.wikipedia.org/wiki/Soft_handover

   Soft handover. Soft handover or soft handoff refers to a feature used by the CDMA and W-CDMA standards, [1][2] where a cell phone is simultaneously connected to two or more cells (or cell sectors) during a call. If the sectors are from the same physical cell site (a sectorised site), it is referred to as softer handoff. This technique is a form ...