I've had my t-mobile tab s7 for a rew days. What I've noticed is that tmo/Samsung has looked the app down so you can't make calls. The Phone.apk is present just not the ability to make calls. Move on to something. Also the oem unlock is missing from developer systems. And to add one last thing. Im unable to send text messages without rebooting the tablet. My model is the T878U. I hope there will be some changes but not holding my breath