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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. Remote SIM provisioning - Wikipedia

   en.wikipedia.org/wiki/Remote_SIM_provisioning

   The LPA will request carrier profiles available for download, either by submitting the activation code provided by the user or the eSIM ID (EID) of the eUICC. The SM will provide the requested profile encrypted in a way that only the eUICC can decrypt/install to ensure the network authentication key remains secure.

4. List of mobile virtual network operators in the United States

   en.wikipedia.org/wiki/List_of_mobile_virtual...

   Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.

5. SIM Application Toolkit - Wikipedia

   en.wikipedia.org/wiki/SIM_Application_Toolkit

   Updating Android software is done over GSM where the SIM Toolkit may install automatically with new software regardless of automatic install applications.. Change in applications and menus stored on the SIM is difficult after the customer takes delivery of the SIM and sometimes may be recognized as surveillance software.

6. Apple SIM - Wikipedia

   en.wikipedia.org/wiki/Apple_SIM

   However, activating mobile services on AT&T will permanently lock the Apple SIM to AT&T, requiring the purchase of a new Apple SIM in order to use a different carrier. [4] The Apple SIM is known as a Removable SIM with Remote Provisioning [5] – it is a special SIM card that may be configured with different operator profiles.

7. AT&T Mobility - Wikipedia

   en.wikipedia.org/wiki/AT&T_Mobility

   AT&T Mobility, LLC, also known as AT&T Wireless and marketed as simply AT&T, is an American telecommunications company. It is a wholly owned subsidiary of AT&T Inc. and provides wireless services in the United States. AT&T Mobility is the third largest wireless carrier in the United States, with 117.9 million subscribers as of December 31, 2024 ...