I'm using a turbo sim card chip with my T mobile sim card and everything had been working flawlessly, data services plus full bars of service. Yesterday evening the phone just loses services and that's it.. no way of getting it back.. It detects the carriers ATT and T mobile but when i select t mobile it just doesn't connect. I reset the network services and entered the data APN all over again but nothing seems to work. I would really appreciate any advise or at least to see if this issue has occurred to anyone else.