Originally Posted by trikastu
thank you for the quick answer.
is there any way to make my bbm and email work? i follow all the instruction, the web browser working fine for wifi and tmobile, but still no luck with the bbm and email (get an message "had problem connecting to the server").
No. The service books are no longer publicly available for you to sideload onto your device, and the focus for all providers is on moving towards generic data plans that the BB10 devices and all other smartphones can use. You will expend much greater effort trying to get a 9850 to work than you will to sell it and get a T-Mobile approved device.