We all remember OnePlus 6T made its grand entry last year in the US by teaming up with T-Mobile. OnePlus has been immensely successful with all its devices. Now that OnePlus is getting busy with rolling Android 10 updates for its global variants of OnePlus 6T, the T-Mobile users are wondering when the T-Mobile OnePlus 6T Android 10 update will drop.
Well, let’s break this good news to the T-Mobile users. On its support page for OnePlus 6T, T-Mobile has confirmed that Android 10 for the device is currently under development. OnePlus is working on the update. We have a screengrab of the support page of OnePlus 6T.

As you can see the Android is under development phase. Next, it will begin the testing phase once development is over. We may expect beta rollouts to a few selected users in the testing. After that, the stable Android 10 update should roll out to T-Mobile OnePlus 6T.
OnePlus did push the Android 10 to OnePlus 7 and 7 Pro earlier. However, due to the bug issues, the rollout was stalled. It was patched with a quick hotfix software update.