HT5014: iPhone: About unlockingLearn about iPhone: About unlocking
Currently Being ModeratedJan 19, 2013 1:31 AM (in response to raghuy)
You phone company/carrier contact Apple to put the model number of your phone on a database to show that it is unlocked and can be used with any carrier and not just your original carrier.
An iPhone does not need to be unlocked if you are happy with your current phone comapny/carrier - I have had all my iPhones on o2 since it first came out and o2 was the only carrier - now the market is open and I am still with o2 and am quite happy with them and my phone is still locked to o2 and I see no need to have it unlocked.
You would only consider getting your phone unlocked if you do a lot of travelling and want to insert local sim cards into your phone when you travel to keep your costs down, as the international roaming feature costs a lot more that inserting local sim cards into your phone. By getting your phone unlocked, this is a way to do this.
You should not need to get your phone unlocked multiple times - once your phone has been officially unlocked by your phone comapny and entered onto the Apple database and shown as unlcoked, then it should remain unlocked and you don't need to get it unocked again - you should then be able to use any sim card in the phone that you want to.
Currently Being ModeratedJan 19, 2013 1:27 PM (in response to Ethmoid)
Thank you very much for the information. I do have a follow up question.
I understand that it is the carrier, such as AT&T, that locks the phone. Does it mean
everytime you install a new sim from a different carrier, the phone is locked by that
carrier? Or is it possible to switch without constraints once the phone is unlocked?
Currently Being ModeratedJan 19, 2013 2:08 PM (in response to raghuy)
If your phone has never been hacked or jailbroken then once the original carrier unlocks it the phone will be unlocked for all carriers. It will not lock again. If it HAS been hacked all bets are off.