Poor Battery Performance

My device is also S21 FE, after OneUI 5 update, the battery seems to be better. At least getting 6 to 7 Hrs of SoT. I rarely travels so if you are the one who travels often then the battery may hit poorly.

🤣🤣🤣🤣 F62 battery draining issue

Try adaptive battery saving in the battery settings...Mine has improved a lot. Before i was using only at 60hz but now with 120hz and I'm getting 6.5hrs sot

On idle battery consumption is little high...Better use battery saver at night

Dear Samsung member,

Greetings from Samsung customer support.

We acknowledge your query and apologize for the inconvenience caused to you and will surely assist you regarding the same. And please follow the easy troubleshooting steps which might help to solve the issue.

Battery optimization helps you to boost the battery performance of your device. To check battery optimization:

Settings > Select Device Maintenance/Device Care > Optimize > Optimize all options like Battery, Storage and Memory

Kindly turn off the smart features of the device and other connectivity features when not in use, which will eventually help you to reduce battery power consumption (smart features such as Motion gestures in advance feature and Bluetooth, Wi-Fi, Hotspot, etc.).

Please follow the below steps:
1. Swipe down on the home screen to open the notification panel.
2. Tap on Bluetooth, Location/GPS, Wi-Fi, Mobile hotspot, NFC, etc. to turn off.

In case the issue still occurs. Please register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report).

Thank you for writing to Samsung.
Warm regard,
Samsung customer support

Try this — it helped me get stable performance on F62 without issues:

1. Always use Power Saving Mode – keeps background activity and CPU usage under control.


2. Charge overnight only when temperature is low – avoid charging in hot environments.


3. Go to Device Care > Storage, let it load, and clear cache files. If that doesn’t appear, manually clear cache for each app.


4. Set auto reboot daily from Device Care settings – improves long-term performance.


5. After 300–400 charge cycles, battery health naturally drops to 80% – heating and reduced performance can be expected, especially after 1–2 years.


6. For heating and lag, go to Settings > Apps > [app name] > Battery > Restrict background usage for apps that don't need to run constantly.


7. Don’t use phone while charging. Remove the case, don’t place it on soft surfaces like pillows, and avoid using it under load when plugged in.


8. Turn off Auto Sync, WiFi, Bluetooth, and GPS when not needed.


9. Disable or uninstall unnecessary Samsung bloatware – even system apps can be disabled if not used.


10. If the camera lags, go to the camera app settings and clear app data – it resets the camera without deleting your photos.

If this helps the please select helpful of as solution on this comment