The first difference we noticed between the T-Mobile Tab and Sprint's is the backing. The Sprint model features a white back, whereas the T-Mobile version is clad in black with a subtle sparkle finish.
The preinstalled apps on the home screen of the T-Mobile Tab differ from the Sprint version. The most notable additions are the Qik video chat app, Slacker Internet radio, and Asphalt 5 racing game (full version). These same apps are available for download on the Sprint version (via the Market app), but not preinstalled. We also noticed the Navigation and YouTube apps are on the home screen of the T-Mobile version, but are tucked away in the app drawer on the Sprint model.
The beach home screen image is another little difference between the T-Mobile and Sprint versions of the Tab. Like the choice of home screen apps, though, it's completely customizable by the user. We also noticed that the T-Mobile Tab includes five home screens by default, which can be switched between by swiping left or right. The Sprint model uses three screens by default.
Another hardware detail that distinguishes the T-Mobile Galaxy Tab from the models offered by Sprint and Verizon is the inclusion of a SIM card slot. The SIM slot uses a full-size SIM, as opposed to the micro-SIM used on the Apple iPad and iPhone 4.
You'll also notice the MicroSD card slot here, which is empty on the T-Mobile Tab but can support cards up to 32GB. Sprint's Tab includes a 16GB card, adding to the 16GB of internal memory that's standard for both Sprint and T-Mobile.