Hi, is it hot all day? I had the problem when it is the night or it is hot and the battery drops very quickly when it is in standby. I did a phone reset. I'll see what that gives.

yeah it mostly hot both day and night. I feel some app is still running even i have lock the screen.
I find trick is to go to Battery in setting, then change to Saving mode. It help reduce the temperature, but the performance become turtle.
I hope that when Flyme6 release it will help.

Yes you are right when I put in economy mode the battery is better and the phone heats up less for me. By cons I put the balanced mode and well the battery drops at an incredible speed !!

I hope Flyme 6 will resolve that problem