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2. SIM Application Toolkit - Wikipedia

   en.wikipedia.org/wiki/SIM_Application_Toolkit

   STK has been deployed by many mobile operators around the world for many applications, often where a menu-based approach is required, such as Mobile Banking and content browsing. [1] Designed as a single application environment, the STK can be started during the initial power up of the SIM card [ 5 ] and is especially suited to low level ...

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. Access Point Name - Wikipedia

   en.wikipedia.org/wiki/Access_Point_Name

   Typically, APN settings are configured automatically when SIM is inserted or eSIM is activated. [1] An 'Access Point Name' (APN) is the name of a gateway [ 2 ] between a mobile network ( GSM , GPRS , 3G , 4G and 5G ) and another computer network , frequently the public Internet .

5. 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.

6. Mobile virtual network operator - Wikipedia

   en.wikipedia.org/wiki/Mobile_virtual_network...

   It operates technically, in a similar way to a mobile network operator, but without spectrum and radio access network (RAN), which it still leases access to from a mobile network operator (MNO). The Full MVNO has a switching and transmission infrastructure allowing the management of its traffic.

7. GSM services - Wikipedia

   en.wikipedia.org/wiki/GSM_services

   Short Message Service (more commonly known as text messaging) has become the most used data application on mobile phones, with 74% of all mobile phone users worldwide already as active users of SMS, or 2.4 billion people by the end of 2007. SMS text messages may be sent by mobile phone users to other mobile users or external services that ...