Originally Posted by maccumhaill
Two question here. I have unlimited data with AT&T. IF I have them unlock will I get a hard time about having that data plan. Also if a phone is factory unlocked how can you tell if you don't have a sim from another carrier?
unlocking your phone will not change anything about your data plan or any other part of your agreed upon monthly rates and services.
the whole reason for getting your phone unlocked is so you can leave at&t and go with a company that has cheaper monthly rates with comparable services.
once you have at&t or whoever unlock your phone for you, you either need to restore your phone through itunes and you will get a display saying "congratulations your phone is now unlocked" or you can deactivate your device with redsnow then reactivate it to get the unlock to take.
if you dont have a different sim to actually test if its working or not there are websites that can check the status of your phones carrier lock/unlock situation.
most however are not free.
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Originally Posted by dyepoi
i have iphone 4 AT&T locked.my problem is how to unlocked it to use different carrier.i dont know what method to be use.Jailbreak or ??
if your phone was purchased from a legit carrier and you have a good record with at&t they will unlock it for you for free.
otherwise go here Permanent Factory Unlock service for Sinful members - SiNfuL iPhone