I've just spent the last hour and a half trying to answer this question myself but still no luck. I'm going to be going to Mexico in the next month. I want to know if I can get a prepaid sim card there and use it in my phone? Since I didn't apply the GSM patch before first boot would I have to start over and reinstal everything again? I actually have a spare Droid 4 right now so if this was the case I would probably just flash that one for GSM and just restore a titanium backup on there to get everything back in place. If anyone knows if this will work in Mexico on Eclipse that would be great!!