The subscriber identity module -- SIM -- contains the information used to connect to your wireless carrier's network from your iPhone 4. If you are planning to resell your company's iPhones, you ...
All iPhones and iPads with cellular have a slot on their sides that houses the Subscriber Identity Module (SIM) card provided by your mobile carrier. The SIM card enables your device to access the ...
You'll need your iPhone's IMEI number if you want to unlock it and use it on a different cellular provider.
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