The Samsung Galaxy S21 has a 4,000 mAh battery , therefore it is capable of lasting a day or more. However, some users have reported that the battery lasts less than expected .
You can check if there is a problem as follows:
- Go to " Settings " and access the " Device maintenance " section.
- Click on " Battery " and see the chart " Using the Battery " to check if an application is consuming an excessive amount of battery.
If you spot a bug, you can fix the problem by adjusting aspects of the screen that tend to drain your battery.
The " Adaptive Refresh Rate " is most likely set to 120Hz , set it to 60Hz so it uses less battery power. To do this you must do the following:
- Go to " Settings " and click on the " Show " section.
- Click on " Smoothness of movement ".
- Select " Refresh rate 60 Hz " and click " Apply ".
You can also adjust the screen resolution by following the steps below:
- Go to " Settings " and select the " Screen " section.
- Click on " Screen selection ".
- Choose the resolution you want and click on " Apply ".