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2. eSIM - Wikipedia

   en.wikipedia.org/wiki/ESIM

   An eSIM (embedded SIM) is a form of SIM card that is embedded directly into a device as software installed onto a eUICC chip. First released in March 2016, eSIM is a global specification by the GSMA that enables remote SIM provisioning ; end-users can change mobile network operators without the need to physically swap a SIM from the device.

3. SIM card - Wikipedia

   en.wikipedia.org/wiki/SIM_card

   A typical SIM card (mini-SIM with micro-SIM cutout) T-Mobile nano-SIM card with NFC capabilities in the SIM tray of an iPhone 6s cell phone A SIM (Subscriber Identity Module) card is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephone ...

4. Multi-SIM card - Wikipedia

   en.wikipedia.org/wiki/Multi-SIM_card

   Multi-SIM technology allows cloning up to 12 GSM SIM cards (of format COMP128v1) into one card. The subscriber can leave the original cards in a secure place and use only the multi-SIM card in day to day life. For telecom operator-provided cards, only the Group MSISDN number is known to multi-SIM subscribers.

5. 9 ways scammers can use your phone number to try to trick you

   www.aol.com/news/9-ways-scammers-phone-number...

   SIM swapping or a port-out scam is when scammers transfer your phone number to a new SIM card in their possession. By convincing your mobile carrier to reroute your number, they can receive all ...

6. Mobile number portability - Wikipedia

   en.wikipedia.org/wiki/Mobile_number_portability

   MNP can take up to 8 working days but usually takes no longer than 1–2 working days. Switching occurs between 1 am and 5 am. Peru: 2010.01.01 7–9 Free sim card of the new mobile company that will cost around 15 PEN. United States: 2003.11.24 0 Free

7. Mobile phone feature - Wikipedia

   en.wikipedia.org/wiki/Mobile_phone_feature

   A hybrid mobile phone can take more than one SIM card, even of different types. The SIM and RUIM cards can be mixed together, and some phones also support three or four SIMs. [15] [16] From 2010 onwards they became popular in India and Indonesia and other emerging markets, [17] attributed to the desire to obtain the lowest on-net calling rate.