So I landed in Taiwan yesterday and using my iPhone 3G overseas for the first time since getting it. I was in Japan for a few hours on the layover and it works great there. Strong signal, data was fast and good. 3G popped on quickly, clear sound. Landed in Taiwan, different situation. The 3G is connected, but it takes a while to get a call out and connect to the system. I have missed calls and gone straight to VM. Data is terrible and almost non-existant. I can't switch the network automatically to select a different one. So, I'm not quite sure if it is the network or the equipment yet, still trying to figure that part out.