Tahshin123 , via OnePlus 8 , Jan 24, 2022 : im using color os 12 open beta 1 for 2 days now .... so far its really well optimised for regular usage but there are a few things international users might want to know before they flash it so here are some points. 1 & 2 are the most important ones i hope it helps y'all . 1. if you install it you can not rollback normally using an official rom zip file so be sure to know what you are doing. because you cant go back 2. google services work fine ... as in playstore youtube and everything but PAYMENT DOESNT WORK && GOOGLE BACKUP DOESNT WORK . 3. YOU WON'T GET OTA UPDATES FROM THIS OPEN BETA (YET) 4. there are some bugs here and there but they are not a deal breaker .... other then these the rom is quite polished unlike OxygenOS 11 , battery life is waaaay better then OxygenOS 11 , phone feels more fluid overall . I really wish we get coloros12 as official rom for oneplus devices for oneplus 8 instead of the mess what OxygenOS 12 is .