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2. SIM card - Wikipedia

   en.wikipedia.org/wiki/SIM_card

   SIM cards are identified on their individual operator networks by a unique international mobile subscriber identity (IMSI). Mobile network operators connect mobile phone calls and communicate with their market SIM cards using their IMSIs. The format is: The first three digits represent the Mobile country code (MCC).

3. Mobile phone - Wikipedia

   en.wikipedia.org/wiki/Mobile_phone

   Mobile phone. A mobile phone (or cellphone [a]) is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone ( landline phone ). The radio frequency link establishes a connection to the switching systems of a mobile phone ...

4. Phone cloning - Wikipedia

   en.wikipedia.org/wiki/Phone_cloning

   GSM cloning occurs by copying a secret key from the victim SIM card, [3] typically not requiring any internal data from the handset (the phone itself). GSM handsets do not have ESN or MIN, only an International Mobile Equipment Identity (IMEI) number. There are various methods used to obtain the IMEI. The most common method is to eavesdrop on a ...

5. The next generation of phones will make SIM cards obsolete

   www.aol.com/article/2015/07/17/the-next...

   The era of the SIM card might be about the end. That little plastic card that allows your phone to connect to a specific carrier is about to be replaced by what Samsung and Apple called ...

6. SIM lock - Wikipedia

   en.wikipedia.org/wiki/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-free or ...

7. OneSimCard - Wikipedia

   en.wikipedia.org/wiki/OneSimCard

   OneSimCard was introduced in 2007, by parent company Belmont Telecom Inc. a licensed U.S. interexchange carrier providing telecommunications services since 2004. [2] OneSimCard is distributed by retail stores throughout North America, including Fry's Electronics. OneSimCard is sold inflight on Virgin Atlantic and Malaysia Airlines.