I just got my new iphone here in China. I broke my 2G and my friend took it to the US and got the apple store to give us a no-contract 3G phone for a cheaper price than $600, and the guy swore it would work with any SIM anywhere. BUT here in China, when I put in my SIM card, I get a VERY low signal, just the dots and no bars, and no China Mobile typed next to it, and no data access. However, the SIM seems to be accepted, just bad signal. I use this card with other phones with no problem, and in fact I used the same card with my old iphone. Could it be a need for a higher tech (3G) SIM card? Or could it be that the phone is not truly unlocked for non-ATT? Any ideas?