I recently purchased a Sony ericsson W995a ex telecom I have been using Sony Ericsson C510a and to be honest its a really good phone.
I was and am able to sign in to my T-World on the C510 however am not able to do the same on the W995a.

All the configurations are the same so i am figuring its an XT network tweak that needs to be done?

Does anyone else have similar issue?