Quote:
Originally Posted by MikeyObviously
Unlocked 4s on iOS 7 today no problem.
Unfortunately it looks like Verizon won't activate a device originally sold with an AT&T plan (they have different IMEI prefixes) so it was all for naught. Still going to try...maybe I'll get a cool guy behind the counter who'll can do it anyway.
Quote:
Originally Posted by kerowo
I thought ATT and Verizon used different radios?
Quote:
Originally Posted by MikeyObviously
I thought the 4s had gsm and CDMA radios?
This is correct with the 4S. There is no way to use a 4S that was originally for AT&T on Verizon or Sprint. It can only be used on AT&T and T-Mobile, if it's unlocked.
AT&T and T-Mobile operate on the GSM network while Verizon and Sprint use CDMA. Starting with the iPhone 5 and LTE, the US government made Verizon unlock all their LTE phones and you can use them on Verizon, AT&T and T-Mobile. You may not be able to get the fastest LTE speeds though. I'm not 100 percent sure about that.
It doesn't work the other way though. You can't use AT&T or T-Mobile iPhone 5's and beyond on Verizon's network. Just on GSM carriers if they are unlocked.