This phone is part of a Huge lot of Pre-Production phones, Tested by T-Mobile in the early 2000's. It is an engineering phone to test the pre-production phones.
See the bored holes on the back of the phone.
This is for Vintage Collectors!!
The phone is fully functional with NO T-Mobile Resellers!!
You are buying a Blackberry 9900 Cell Phone for T-Mobile Resellers