Random turning off of OnePlus 3T

[Dobridin]

Hi guys, I have the following problem. My phone keeps turning off at random times. Today it happened more then 5 times. The problem started about a month ago. The phone started turning off at random times. So I did a factory reset with complete data wipe and it didn't help. So then I disabled Google services like Chrome, Disk, Gmail etc., Cleaned the chache as well. So this stopped the problem for a while. The I decided to turn back the services one by one to see if it works and it did work alright for a week or so. But since yesterday the problem got worse. I disabled the services one again but the problem stays. I should point out that about 6 months ago I send the phone for a battery change and it was done in official OnePlus service center with OEM part. So the battery should be fine. What I noticed is a huge battery drain on the phone while is turnes off. I attach screens showing the drain and that it had about 1,5 hours of screen on time. There is barely any app on the phone. I use Edge instead of Chrome, I have Viber plus three or four other apps to try keep it simple. Can you help me with that issue?

 

[xaniared]

Just wow. I have exactly the same problem. I also changed the battery 6 months ago like you did but myself with eBay battery. I was thinking it has something to do with the battery cable not connecting properly but the battery was changed 6 months ago and the problem started 1 month ago like yours. The eBay seller is sending me a free replacement to see if it works. I also tried formating ,wiping cache etc but nothing worked. I have no issues with battery drain at all though. The new battery works fine. Sometimes I notice a little overheat that I have never seen before in the 3 years I use as a daily driver. Also sometimes when it powers off, the only way to power it on is by plugging the charger.