RadekCech44 , via OnePlus 7 , Jan 23, 2020 : Hello fellow users, I've always used my phone as an alarm - in the night I always manually turn it off and it is set up to automatically turn on every morning before the next alarm is going to ring. However today something very strange and serious happened. My phone somehow killed itself through the night. Here is what happened: 1) Firstly, the phone did not turn itself on automatically. 2) Secondly, I couldn't turn my phone on, it was acting like bricked. I held power button for 20 seconds - nothing happened. I left it for few minutes and then I tried again, again nothing. I waited another few minutes and tried again and it finally turned on. 3) Lastly, when the phone booted up, I lost about 65% of battery. So I would like to inform all OnePlus 7 users about the issue and better not turn your phone on automatically through the night. I am using latest OxygenOS 10.0.3 and I am not rooted, I am using completely stock.