Monday, April 11, 2011

TiPb Answers: What is a SIM card and what does it do?

New to iPhone and wondering what exactly that tiny SIM card in the side of your AT&T/GSM iPhone or iPad 3G is, and what it does? The short answer is, it’s a Subscriber Identity Module, and it is a small circuit board which is placed in your iPhone (or any GSM phone) in order to [...]

TiPb Answers: What is a SIM card and what does it do? is a story by TiPb. This feed is sponsored by The iPhone Blog Store.

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