Hello together. I have an Iphone 3G FW2.1 Jailbreaked and using a turbo Sim Card. So far so good. I was in the last couple of days in India and my Iphone worked well with a T-mobile Sim Card. After India I went to germany and same Iphone worked well still T-mobile Sim. Now since I am back in the US it does not work anymore and the Iphone is continuously displaying no service. All the time I used a T-mobile Card and the phone was working great but why not now anymore? This is weird. Please help out.