For the past 2 nights I've noticed that the battery on my s9+ has drained completely overnight.
The battery is well over 80% when I check it before going to bed - no apps are left open and the battery usage shows that Google Play Services is using about 4-8% in the background, as well as a few others in the background but nothing significant (0.1 - 2%).
The battery usage chart shows the battery depleting by at least 50% each hour from just before 01:00 AM. I hadn't used my phone since 11:00 PM on both nights.
Can't understand what's happening. No new apps have been downloaded to my knowledge. I have nothing actively showing on the screen (e.g. clock, active wallpaper). The phone is not in use.
As mentioned, it's only started on 13 May, before that there's been no issue - indeed the battery usage over night has been very minimal as expected. During the day I charge my phone to 100% and it will drop to no less than 75% with light usage.
Thanks for your reply. I don't think it's the battery as I'm getting decent life during the day when not being used too heavily. As mentioned, the drain was happening overnight whe not in use and starting at the same time. I could see in the usage stats that Google Play Services was using upto 40%. I don't have any apps set to auto update, and have now gone through disabling alot of their other auto features too. As a test I turned of wifi one night and noticed just a 3% drain overnight. Left wifi on last night and battery drain was just around 4%, so seems good for now. Will keep an eye on it next few nights.