Hey guys, I have a few questions about using my iPhone 5 abroad, any help is greatly appreciated! I have an unlocked AT&T iPhone 5. In the next week I will be traveling to Amsterdam, Prague and Berlin before settling in London for 4 months to study abroad. I read some old threads on the forum and believe I will buy a SIM from either Three or GiffGaff for my time in London. My question is: what would my best strategy be for getting my iPhone to work in the first three countries before I get to London? Thanks!