Subscriber Identity Module (SIM) is basically a memory chip which is portable and is used in mobile phones. These portable chips make it easier for people to change phones. All they need to do is take the SIM card out of an old phone and put it into a new one. These SIM cards store very valuable information like your PIN, your mobile phone number, some SMS’s and your contacts. Some SIM cards also hold Value Added Services provided by the network whose SIM card you are using. When you insert your SIM card into any phone, the phone gets activated without any further work.

Subscriber Identity Module (SIM) is basically a memory chip which is portable and is used in mobile phones. These portable chips make it easier for people to change phones. All they need to do is take the SIM card out of an old phone and put it into a new one. These SIM cards store very valuable information like your PIN, your mobile phone number, some SMS’s and your contacts. Some SIM cards also hold Value Added Services provided by the network whose SIM card you are using. When you insert your SIM card into any phone, the phone gets activated without any further work.

SIM cards can prove to be handy. For instance, let’s assume that your cell phone’s battery dies while you are at your buddy’s house; and let’s say both of you have cell phones that run with SIM cards. You can then easily take your SIM card out and put it in your friend’s cell phone to make important calls. As your SIM card will be in use it won’t cost your friend anything, because in SIM-based cell phones, mobile phone sets don’t matter.

It means you can change as many cell phones as you want, because you have a portable SIM card that can easily slide into any SIM-based cell phone. You can also keep different phones with different SIM cards for separate uses. You can keep one for home, one for work and one for emergency calls.

Different carriers provide different fees for their SIM cards. Each network provides you with different call rates, text rates, data services and other valuable services. Before choosing a carrier, make sure you are choosing the right one. Even if you think you want another carrier for some reason, you can always buy a new SIM card, or you can keep your current SIM card and change your network. This service is available in selective countries only.

SIM cards give a number of benefits to the international travelers. All you need to do it take your cell phone with you and you can then buy a local SIM card from where you are, with free minutes in it. Many carriers offer international roaming on their SIM cards. You will need to call your carriers to enable the service. You can use your SIM card internationally too.

By: Erin Duan

It means you can change as many cell phones as you want, because you have a portable SIM card that can easily slide into any SIM-based cell phone. You can also keep different phones with different SIM cards for separate uses. You can keep one for home, one for work and one for emergency calls.

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Article Tags: SIM cards

Submitted On Feb 15, 2012. Viewed 17 times.