HD2 - t-mobile USA in china problem

[nick7920]

I have HD2 t-mobile (USA) phone and I am in china for a trip. I bought the local sim China mobile - voice call works fine I am having problem with data (internet).
I have also turned the service for GPRS plans but I cant get to the internet.

I use to get the error of GPRS before the data plan.
I tried the authentication PAP and CHAP but the same thing happened.
disable HSDPA/HSUPA

I would appreciate for any idea's, for now i am clueless.

T-mobile stock rom wm6.5