Battery Auto Draining Problem

[D_Datta]

I have bought S21 FE (Exynos Version) mobile since 2 months. One thing I have noticed since the purchase is that the battery is draining automatically. It was at a moderate level then. Then it was seen that 10-12% battery was drained throughout the night (8 hours). But now it's not tolerable anymore, now it drains 40-45% charge at night (8 hours). Which is very unstable for me and also very painful. I contacted customer care and followed their instructions. Same result even with safe mode on. I can't solve it at all. Not getting any satisfactory solution from Samsung either. Is there anyone who can provide a solution to this problem? Or is there anyone who has faced such problem? If so, how did you solve it?

[Nothingnew]

I wont update my phone now , because every update brings bad battery backup

[Fast_n_Curious]

1. Check if its running 5G. If yes, would suggest you to shift to 4G as currently 5G networks are very unstable.

2. Setup routines to save battery at night (screenshot attached)

3. Turn off AOD if you are using it by keeping it active for selected schedule.

4. Check the network strength where the phone is placed during night. Low network strength results in more battery usage.

5. Turn of emergency services and earthquake alerts under location settings

[D_Datta]

Screenshot Attached

[Fast_n_Curious]

Ok. What does the battery consumption page show? Give the ss for the stats during night

[D_Datta]

Check plz

[Fast_n_Curious]

Thats really bad. For now you can try the following

1. Turn off wifi calling
2. Check signal strength from Settings >> about phone >> status information >> sim cards. If its below -105db, this could be draining the battery
3. Backup and reset

[D_Datta]

But why is the same charge drain in safe mode?

[Fast_n_Curious]

If this is the case, raise it on the online support and service centre.. if that doesnt help, take it to twitter

[D_Datta]

Thank You