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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.
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.
APN settings connect the device to the internet via mobile carrier’s cellular network. These settings include IP addresses, gateways, and other technical details that enable the device to access the internet and send MMS. Typically, APN settings are configured automatically when SIM is inserted or eSIM is activated. [1]
Vodafone Idea, in acronym Vi, is an Indian telecommunications company, headquartered in Mumbai and Gandhinagar. [ 7 ] [ 8 ] [ 9 ] It is an all-India integrated GSM operator offering mobile telephony services.
A key technical aspect of Mobile Number Portability (MNP) involves the routing of calls or mobile messages (SMS, MMS) to a number once it has been ported.Various call routing implementations exist globally, but the International and European best practice employs a central database (CDB) of ported numbers.
Devices without a SIM card slot or eSIM capability usually do not have an IMEI, except for certain early Sprint LTE devices such as the Samsung Galaxy Nexus and S III which emulated a SIM-free CDMA activation experience and lacked roaming capabilities in 3GPP-only countries. [4]
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.
The Intel XMM modems are a series of 4G LTE, LTE Advanced, LTE Advanced Pro and 5G modems found in many phones, tablets, laptops and wearables (sans 5g-technology) developed by Intel Mobile Communications. [1]