What is a SIM card and what is used for?
Subscriber Identity Module (SIMs) are integrated circuit cards used in Global System for Mobile communications (GSM) devices (e.g., phones, PDAs, modems) to hold information for the authorized user. SIMs contains mobile phone number, phone book and registration information. GSM subscribers have the flexibility to change devices by switching SIMS between devices.
Related Questions
- should the SIM card used on my FINDMYSTUFF tracker get disabled or locked by cellphone carrier for any technical or administrative reasons, would I be allowed to continue to use the service?
- how to unlock a cell phone so it could be used with any GSM Sim card?
- Can the SIM card be used with iPads and cellular modems?
