I been using a BlackBerry Torch 9800 Unlocked on T-Mobile, and if you are one of them you know that MMS among other things did not work correctly. The problem with using the Torch on T-Mobile when it first launched was that for some if the service books settings were not transfer from your old device, your new BlackBerry had no MMS options, no internet browser. If you did transfer the settings correctly you had the option to send MMS but when you received one the images were scaled down to a small image.
It looks like T-Mobile fixed that or supports the device now because all the sudden my MMS pictures appear normal now instead of a really small image. So if you are running a BlackBerry Torch on T-Mobile network let us know if you noticed the same thing if not try resending your service books and see if that takes care of it. I lived without having MMS on my device for almost eight months now to the point that I was getting used to it but am glad it works now.