Although I have yet to test abroad, before even finding out about unlocking the phone, I called metroPCS (my carrier) to have them register or whatever they do with the imei and switched my sim into this verizon s4 I've been trying to use, after copying a friend's apn and a few other settings, I was able to get my 4g data, but it would disappear at times quite often, send / receive calls, but also dropped at times, was able to receive texts but was not able to send texts they would just fail to send. And then there was the carrier differences like I could not get my metroPCS voice mails on verizon phone, although later on in found you can download most metro apps in play store. But it wasn't reliable enough so I switched back to a different generic Samsung android. I have since rooted the s4 as well as been working on getting recovery flashed and framework installed. I've had a little hiccup and am not able to fully boot the phone up at the moment but once I get to a computer I can sort that out. But now that it's rooted I've been trying to find out how I can unlock the phone. Is there anyway to fully get all the verizon that's infested in seemingly every inch of this phone?