T-Mobile has long since confirmed the HTC One S would be coming to their network and we've gone hands-on with the device plenty of times already. However, there hasn't been a whole lot of video popping up with the device actually running T-Mobile software. A new video found on YouTube gives us all a good look at it though if you're into teasing yourself with devices you can't yet have. No telling how old the software is though given the device is still lacking any T-Mobile branding. And yes, we did giggle at the "Mobile World Convention" comment.