Hi all, I'll be traveling abroad and want to know how to prevent any extra charges while keeping as much functionality of the phone as possible (so... I want to try avoid taking out the SIM). If I set up call forwarding (via Settings > Phone > Call Forwarding) to my Google Voice number and disable data roaming will I be okay? The advantage I see to this is that I will still receive SMS (and hopefully MMS?). I have AT&T. Thanks Edit: Also out of curiosity, are there any cheap unlocks available for the 5S for AT&T right now? Last I heard they were pretty expensive.