OnePlus has released the Android 13-based OxygenOS 13 Open Beta update for the OnePlus 9RT, which was launched last October with Android 11-based ColorOS 12. It is currently seeding in India and brings the Aquamorphic Design to the 9RT in addition to some optimizations, improvements, and new features. If you are interested in giving it a try, make sure your 9RT is running the latest OxygenOS 12 version (C.07) before installing the update. It should also have at least 30% battery and 5.5GB of free storage. However, it's worth noting that beta builds aren't usually as stable as the...
Source: https://www.gsmarena.com/oneplus_9rt_android_13_oxygenos_13_open_beta-news-56176.php
