Idle or Overnight Battery drain S21 5G Exynos 2100

[Nrajan389]

I am experiencing unusual battery drain while the phone is idle , I have tried disabling all networking like wifi, mobile , Bluetooth,. location etc .I have tried resetting the device .I have tried in safe mode and maintainace mode. Of all the situations the battery drains over 30 % overnight. This is after one UI 5 update, I am very frustrated with this issue for past two months, does anyone experiencing the same.

[Nrajan389]

I am on galaxy S21 5G , The battery drains like 3 to 4 percentage per hour. Can anyone help on this, I reached out to samsung support their response was like checking logs for past two months no updates from them , this is very frustrating.

[Jack414]

You can either try Maximum Power Saving Mode or else u can download Good Guardians app from apkmirror website,in that there's a module called as Battery Guardian,it's helpful to reduce battery drain,I've been using these two methods everyday and my battery drain overnight is usually around 2 to 3 percent only.I hope it works for u too,do give it a try.

[Nrajan389]

I have tried max power saving mode and also Good Guardian, battery Guardian no improvement.

[Nrajan389]

Even I had 1 to 2 percent drain overnight before the update.

[Jack414]

Then I guess this recent update has affected your device.Did u try doing wipe cache partition as well?

[Nrajan389]

Ya I wiped cache partition and also tried repair apps .I even went to a physical samsung service center and flashed a fresh one UI 5 firmware.

[NOOB_1ST_ACC]

25% ?????

[Nrajan389]

Ya 25% in 5hrs and screen on time is just 8mins

[NOOB_1ST_ACC]

Maybe yr battery life got ended.