OnePlus 3T receiving its first OxygenOS OTA update
The new update that's rolling out right now is known as OxygenOS 3.5.3 and brings a few new features and improvements. It's worth noting that this is the first OTA update for the OnePlus 3T, though we don't expect many others will follow until the smartphone gets of the promised Nougat upgrade.
Anyway, the current OxygenOS 3.5.3 update adds emergency calling for India, so if you need to take advantage of this feature you must triple press the power button to trigger it.
Then, the update adds motion detection in camera and enhanced image capturing quality. If you had any issues with the OnePlus 3T's camera, this update should address them all (hopefully).
The OnePlus community app that was pushed to the OnePlus 3 last month is now available for the OnePlus 3T as well, courtesy to this update.
The touch panel firmware has been updated and optimized for better touch precision. Also, the GPS library has been updated and the location accuracy has been further improved. The clock and calling UI have been redesigned. Lastly, the update should provide increased stability and various bug fixes.
Keep in mind that the OTA is incremental, so it will take a few days until it reaches all OnePlus 3T owners, but you might want to check for the update anyway.