AT&T will unlock an iPhone under the following circumstances:
The person requesting the unlock is:
● A current AT&T customer or a former AT&T customer who can provide the phone number or account number for the account
● The iPhone was designed for use on AT&T's network
● All contract obligations, including any term commitment, associated with the device to be unlocked have been fully satisfied
● The iPhone has not been reported lost or stolen.
Each account gets 5 unlocks per year, and each unlock could take up to 5-7 business days to complete. However, in our findings, it seems that the unlocks generally go through in less than 2 business days.
Any iPhone can be requested for an unlock, even the original iPhone.