Well this is cool! Back last Friday I received my unlocked GSM BlackBerry Z30 on T-Mobile during the setup process I was prompted to update the OS to 10.2.1.2140. Today, I was messing around in the settings and thought what the hell I check for and update and boom there it was OS 10.2.1.2160. Now this update does not take the version too a spectacular level but it was nice to see a new OS. I did some digging and found out that this OS does not add WiFi calling to the Z30 running on T-Mobile. As you can see from the image below the file size is 538MB large. If you have already loaded this OS on your Z30 running on T-Mobile let us know what you think about it in the comments.