I will say it again, I'm on android 12 and have been for over 4 weeks at least. Mine runs perfectly, smooth as silk. That's because i did a factory reset after backup. And then did a fresh install with 12, and only restored my contacts, sms, call history. Not app settings or apps. Files and photos etc stay in the cloud backup so you won't lose any of them. I have no battery drain or app crashes. The device learning process can take a few days but it works like me and other people keep saying on here 😉👍