I just want to make sure I do everything correctly. Basically, I was using an temporarily unlocked/jailbroken AT&T iPhone 4 w/ T-Mobile before I upgraded to the iPhone 5 last friday. I want to let the other line on my account use my old iPhone 4 now. I have since removed the jailbreak and temporary unlock and updated to the latest iOS and firmware. I put my old (unactivated) T-Mobile SIM card in there and it never searched for signal (since the phone was locked back up), which is normal I assume. I then had the iPhone permanently unlocked through an eBay service for unlocking. I then restored the iPhone 4 and put back in my old (unactivated) T-Mobile micro SIM card, and this time it went through the activation process, and also searched for signal. So I assume everything is good on the unlock end of things. (It even had me install the T-Mobile carrier update).
The line that I want to use this iPhone 4 is currently using a phone with a regular-sized SIM card in it. My question is, in order to get that line working on the iPhone 4, what all do I have to do? I assume I just go into a T-Mobile store and ask for the line to be switched over to a new micro SIM card, and then put the new micro SIM card into the iPhone 4. Is it just that simple? Will I have to restore the iPhone again with the new SIM card in it? Will there be any other steps I will have to do from the iPhone 4 or will everything begin working instantly before I even leave the store?
Thank you in advance!
Either cut the current SIM yourself or get a micro-sim from T-mobile ($10) and insert it into the iPhone 4. The phone will instantly recognize the service since it is unlocked and you will be good to go.
I took my sim to my local tmo store and talked to the guy there. He asked for my sim, pulled out a cutter and cut it for me. I figured it was better to have him do it 'cause if it got screwed up he'd be able to get me a micro sim. Another store I had chatted with earlier suggested that they'd swap out a sim for free since they didn't have a cutter. So, for me, the best option is to talk to your local store and ask them what options they have for you.
Do you still have your AT&T micro sim? When I switched to T-Mobile I was given a regular-sized sim. I simply held up my AT&T sim as a template and cut with sharp scissors to match up the size and edges.
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