Do unlocked cell phones work for all cell phone carriers/networks if given a SIM card?

D

Deanna

New member
I'm in need of a new cell phone badly, but my mom doesn't want to buy a new one from T mobile. I'm looking at unlocked/jail-broke phones on Amazon.com. But i just want to make sure. no matter who's the maker of the phone or what cell phone carrier/network (tmobile, verizon, at&t), can an unlocked phone be used on any network?
 
Yes, unlocked phones will work on other networks. But this is possible only with GSM networks. CDMA networks like Verizon cannot be unlocked and hence cannot be used with other networks. I am sure of this, because I recently suffered with a locked GSM mobile and after unlocking it through unBBlock.com I was able to swap networks.
 
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