On its unlock page, AT&T says eligible iPhones that are “active ... If you haven’t got the original SIM, you’ll need to reset the phone before it can be unlocked. Power down the phone ...

Here’s AT&T’s SIM unlock policy. This carrier restricts how many devices you can unlock in a 12-month period, which can create problems for those on a family plan. If you ask to have more than ...

[Jason Gin] wanted to reuse the SIM card that came with a ZTE WF721 wireless terminal he got from AT&T, but as he expected ... [Jason] already knew what the SIM unlock command would look like ...

If your SIM is used in a different phone, activation will need the SIM PIN, which is different from your phone’s unlock PIN. To protect against accidental PIN entries, only three incorrect ...