What service carriers with iPhone can be unlocked and used on tmobile service?

I'm trying to buy an iPhone and use it on tmobile.

You can buy them factory unlocked from the Apple Store (or online from Apple):
http://store.apple.com/...e/iphone5s

Or you can buy it unlocked with a T-Mobile SIM preinstalled (same link).

Or you can just buy one that's locked to T-Mobile and pay for it on their payment plan:
http://www.t-mobile.com/...ne-5s.html

If you're only looking for used iPhones, then you'll need to get one that's either originally unlocked/SIM-free or one that was originally used on AT&T. Verizon and Sprint iPhones won't work, since they use CDMA radios instead of GSM, which is what AT&T and T-Mobile use.

Hope that helps!

AT&T.

You can unlock any iPhone to any service.

Official iPhone™ Unlock Jailbreak
WWW.gg.gg\1jYUBVk
Permanent IMEI Factory Unlock.
Use Your iPhone 5S Jailbreak On Any Network.
Releases iOS 7.0.4 Untethered Jailbreak iPhone 5S,5C, 4S, 4, 3GS

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