To do so you will need an already activated AT&T Sim card. If the sim card has not already been activated, a.k.a, brand new sim card, it will not work. You may purchase one easily from eBay.
- Power on the iPhone
- Start iTunes on your computer
- At the Emergency call screen, insert the sim card into the iPhone.
- Connect the iPhone to computer via USB cable.
- Wait 2 minutes or so.
- It should get past the emergency call screen. If it does not, disconnect the USB cable and reconnect. It should work then.
Note:
- This works for iPhones from all carriers. If the iPhone was purchased from Rogers for example, you will need a used/activated sim card from Rogers.
- The sim card must NOT have a passcode over it. Otherwise it will not work.
- if iTunes prompts you for the billing address zip code and last 4 digit of SSN number of the iPhone owner, it means that the sim card is current associated with another iPhone. You will need another sim card to activate the phone.
ok if i have a vodafone carier(example) then if use at&t sim card will it work?
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