how do sim cards work?
The SIM is inside each handset and functions as its digital brain. The authentication and encryption capabilities of the SIM prevent your phone from being stolen and your calls from being eavesdropped on. The SIM’s digital memory, which stores information like your rate plan, phone number and service features, also allows you to easily personalize your service and contains user ID and billing information that can be switched between different phones. So, with your SIM card installed, you can make or receive calls personally even when you’re using a borrowed phone. Upgrading your phone is as simple as slipping your SIM card into your new phone.
SIM card stands for Subscriber Identity Module card. A small encoded circuit board; it can be integrated into GSM mobile phones just the moment you sign in like a subscriber. It stores the information of an individual who subscribe, security data & memory to hold personal numbers. SIM card holds information which enables the network service provider to identify the caller. It hangs on to the same applications whether the SIM is of the size of credit card or plug in type. A SIM card is like a detachable memory card that can be integrated into any GSM handset, allowing you to maintain the same mobile number even in case you change your handset. A typical unique chip, it is found in all GSM cell phone. A SIM card operates like a digital brain of a mobile phone. The encoding and validation capacity of SIM enables you to prevent your mobile from being robbed or mishandled and your tte–tte from being eavesdroped.
The SIM is inside each handset and functions as its digital brain. The authentication and encryption capabilities of the SIM prevent your phone from being stolen and your calls from being eavesdropped on. The SIM’s digital memory, which stores information like your rate plan, phone number and service features, also allows you to easily personalize your service and contains user ID and billing information.
The SIM is inside each handset and functions as its digital brain. The authentication and encryption capabilities of the SIM prevent your phone from being stolen and your calls from being eavesdropped on. The SIM’s digital memory, which stores information like your rate plan, phone number and service features, also allows you to easily personalize your service and contains user ID and billing information that can be switched between different phones. So, with your SIM card installed, you can make or receive calls personally even when you’re using a borrowed phone. Upgrading your phone is as simple as slipping your SIM card into your new phone. Back to the top What are the call charges? Calls are charged by the minute or fraction thereof, depending on the country. The country specific prepaid SIM card comes with a certain amount of call time. This information is available on the web page(s) pertaining to that particular country. In all cases, incoming calls are always free. If your SIM
