I purchased a phone on-line, but it did not work on 4G. I brought it in for help. The guy at the desk tried to get it work, but was unable. After I left I found out that he had thrown away my old SIM card so I was unable to retrieve any data from it. This is typical of T-Mobile, the seem to have no concern for saving customers' contacts, only on selling phones and contracts. Stealing customers SIM cards is not kosher.

Note that the location is actually at 13th and Market Streets, not 12th. And there no longer is any location at 1140 Market Street.