Hi, I would like to ask if someone knows about China Mobile's sim card and the HTC HD7 phone, it has a problem when i put China Mobile's sim card in it. Everytime I try to make a call inside China it always turn off and back on by its self. Does anyone know what's wrong with it or is it still not available for the Window mobile ?

By the way I live in Hangzhou, so if there's any recommend about the phone or sim card please give me some advices. Thanks.