Unlocked iphone 5 problem tmobile?

I recently bought an iphone 5 at&t 32 gb on craiglist from a guy.
The iphone was in very good condition, and I bought it.
He said the phone was unlocked for all tmobile users. So I believed him and took it home.
So I cut down my SIM card from my original smartphone, (LG G2X) to fit the nano sim card.
and put it in the iphone 5, however, it keeps on saying "No Service" even after it says searching…
I tried restoring it and everything but would not work.

What could be the problem here? It recognizes my phone number on itunes, but I have no service. Is it that I could have cut the sim card wrong?(But I cut it perfectly to fit in) or is it that the phone is NOT unlocked?

How can i fix this?

Your iPhone 5 is not unlocked at all, there's nothing wrong with your trimming the SIM if the SIM fits well and your number is recognized on iTunes. You should get it factory unlocked and your phone will work fine on T-Mobile. You can mail this person (arghyle@rocketmail.com) who can help you get the phone factory unlocked.

  • Will an unlocked iphone 4S work for tmobile if it isn't factory unlocked? I want to get an iPhone 4S and my friend has the iPhone 4 unlocked but i'm worried that if i get it non-factory unlocked it won't work. My uncle tried to do it a couple of months ago and apple said that if it was factory unlocked every time the phone shut off or died it would reset. I was just wondering if the same thing would happen if it wasn't factory unlocked? So if I get it unlocked everytime it will shut off it will reset? That is what i'm worried about.
  • What to look for when buying an unlocked tmobile iphone? Wanna get an iphone but i'm on a family plan and they have Tmobile (and won't switch) so i was looking on ebay for an Unlocked iphone 4s. But was wondering what are somethings a should look for and keep in mind such as prices condition, etc. So i don't get ripped off or pay to much?!
  • Tmobile user should buy jailbreak iPhone or factory unlocked iPhone? Hello guys I'm a tmobile customer. I want a iPhone desperately. Now do you think it's worth it to save $650 for a factory unlocked iPhone. Or save a few bucks in buying an AT&T iPhone and jailbreaking it? What are the pros and cons of it. What do you think?
  • Is the tmobile iPhone 5 already unlock? And will the tmobile 5 work on AT&T? I have recently been looking at buying an iPhone 5 and I found someone, but they have tmobile an I have AT&T. Will it work on AT&T? Also, how much would the newer SIM card be?