I've purchased three of these so far, but none have worked with T-Mobile as they should. I replaced my first unit with one from all4cellular but it wouldn't turn on. The replacement never did connect for use on T-Mobile, but it is still inexpensive for an LCD frame so I kept it. I just ordered another that would hopefully connect, but it also has not connected after working with T-Mobile support and making sure the IMEI number is correct. If these do not work as they should, then it should be noted in the description.