Samsung Galaxy S21/21+ Battery Life Issues ( Draining Too Fast)

Quick Tips Samsung Galaxy S21/21+ 5G battery life Tips

• Check battery-draining apps – Start by checking which apps drain the battery the most. Go to Settings > Device Care> Battery> Battery > Battery Usage. Once you figure out which apps are at the top of the list, check for the updates or uninstall the app, especially if it is unimportant.
• Restart your S21 5G – If you haven’t restarted your phone for a while, it’s time to do it now. Many apps and processes run in the system’s background, causing the phone's battery to drain faster. Everything that runs unnoticed will be closed when you reboot the phone. In addition, a restart will refresh the memory, and the phone will perform much better.
• Disable the services you don’t use – one of our biggest mistakes is letting various services work even when we don’t need them. There is no need to have mobile data enabled if you’re connected to a Wi-Fi network at home. Or, why keep the Bluetooth on if you don’t need the headphones now? When you are done with the service, please turn it off. You’ll notice the battery lasts much longer.
• Reduce the brightness level or enable Adaptive brightness – Simple tweaks can make an enormous difference. So, you can reduce the brightness level by going to Settings > Display or enabling the Adaptive brightness option if that suits you more.
• Turn off Always-on Display – A feature that can drain and make the battery drain much faster is Always-on Display. You can do this with a single tap by opening Quick Settings and tapping on the dedicated button.
• Set the screen timeout to 15 or 30 seconds – Go to Settings > Display > Screen timeout and select one of the two options.
• Enable Dark mode – If you turn Dark mode on, you will notice a difference in the battery department. To enable it, go to Settings > Display > Dark mode.

You can enable the Power Saver when you are out and can’t charge your phone at the moment, and the battery level is super low. Go to Settings > device care > Battery.

Tap on Power saving mode and tap the switch to turn it on. It will decrease the brightness, limit the CPU speed, and disable some services. You’ll still have the essential functions at hand.

How to Fix Samsung Galaxy S21 Battery Life Issues (Battery Draining Too Fast)

1. Check Battery Usage and health

If your Samsung Galaxy S21 Battery life drains faster than usual, you can start by checking the Battery Usage. You can check to see which apps consume too much power. Close or uninstall the misbehaving apps. To check Battery Usage:

• Navigate to Settings > Device Care > Battery.

A list of used apps will appear below, sorted by date and consumption. See which areas are draining your Samsung Galaxy S21 battery and do one of the following:

• Update the app: Go to the Google Play Store and check for an update
• Force close the app
• Clear Cache: Settings > Apps > Select App >Storage > Clear Cache
• Clear Data: Settings > Apps > Select App >Storage > Clear Data
• Uninstall the App

2. Close Background Apps

The apps you have opened will keep running in the background even when you aren’t using them. The app will keep updating the content if it is open in the background. Whenever you want to use the app, it will open faster because it doesn’t have to reload the content from the beginning. It is efficient but can drain your phone.

3. Put Apps to Sleep

Whenever you are finished using an app, this feature will immediately close the app. To enable Put to sleep on your Samsung Galaxy S21 :

• Navigate to Settings
• Tap Device Care
• Tap Battery
• From the list, select an App
• Turn "Put app to sleep" on

4. Enable Adaptive Battery, Auto disable unused apps, and Optimize Settings

These features can massively improve the battery performance of your Samsung Galaxy S21. By enabling this, your phone's battery will last long; and enhance the phone's performance, such as laggy issues.

• Navigate to Settings
• Tap Device Care
• Tap Battery
• Tap the Menu icon (3 dots) at the top right.
• Enable all the suggested features.

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5. Reboot Your Device

This method effectively fixes common issues, including problems related to the battery. To reboot the phone, hold down the power button and select Restart.

6. Turn Off Tap To Wake Feature (Lift to Wake)

Many Samsung Galaxy S21 users complained (via the Samsung US community forum) about their phone accidentally tapping while in their pocket, causing the battery to drain quickly. One of them reported that his Galaxy S21 even started recording. If you are experiencing the same issue, turn off the Tap To Wake feature. Navigate to :

• Settings
• Tap Advanced Features
• Tap Motion and Gestures
• Disable both Lift to wake and Double Tap to Wake up

7. Turn Night mode on

The Purdue study found that switching from light mode to dark mode at 100% brightness saves an average of 39%-47% battery power.

Bonus: Enable Night Shift

• Navigate to Settings
• Select Display
• Toggle Night Mode on

8. Reduce your Screen resolution

The screen and display contribute a lot to the battery performance of our Samsung Galaxy phone. Consider reducing the screen resolution. Some apps will close when the screen resolution changes. Navigate to:

• Navigate to Settings
• Select Display
• Tap Screen resolution
• Select HD+ or FHD+.

Also, consider reducing your screen brightness when indoors or enabling Adaptive brightness.

• Navigate to Settings
• Select Display
• Toggle Adaptive Brightness On

9. Reduce your Screen timeout

Consider lowering your screen timeout duration.

• Navigate to Settings
• Select Display
• Tap Screen timeout
• Reduce it to 30 seconds or 15 seconds.

10. Enable Accidental Touch Protection

This feature will protect your phone from accidental touches when in a dark place, such as a pocket or bag. This will also help preserve your battery life. Navigate to :

• Settings
• Select Display
• Toggle Accidental Touch Protection ON

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11. Change your Screen Mode

This method is optional; however, enabling the Basic or Amoled Photo screen mode can give you a battery increase of 30% or more. Color consumes more battery than Monochrome.

Navigate to :

• Settings
• Select Display
• Tap Screen mode
• Enable either Basic, AMOLED Photo or AMOLED Cinema.

12. Turn On Reduce animation

This feature will tone down the motion effects on the screen, such as when apps are opened or closed. Navigate to :

• Settings
• Tap Advanced Features
• Toggle Reduce animation on

Other quick Samsung battery tips

• Reduce screen refresh rate
• Avoid Live wallpapers
• Turn on Airplane Mode
• Disable GPS, Mobile Data, WIFI, or Bluetooth when not in use.
• Change the resolution of your pictures and videos.
• Keep the phone out of the heat or extreme temperatures.
• Enable optimized charging and fast cable charging
• Delete Unused Apps
• Is it time for an upgrade?

13. Optimize your phone (Quick)

You can run a quick diagnosis on your phone. This will search for malware apps and apps consuming more than the average usage. Navigate to :

• Settings
• Tap Device Care
• Tap "Optimize"

14. Disable App Notifications

To disable the Samsung Galaxy S21 app notifications. Navigate to

• Settings
• Tap Apps
• Select an app that is causing the problem (High battery usage)
• Tap Storage
• Under App Settings, select Notifications
• Toggle Show Notifications OFF

15. Update Software

Updating the Software can be a potential solution to fixing the Samsung Galaxy S21 battery issue. Updates usually come with a security patch and bug fix to improve battery life. Check if there is a Software update for your device. Head to Settings > Software Update > Download and install.

16. Enable Power Saving Mode

If you find yourself unable to charge your phone and the battery level is low, you can enable power-saving mode.

• Go to Settings > Device care > Battery.
• Tap Power Mode
• Select Optimize, Medium Power Saving, or Maximum Power Saving.

Tip: You can also enable Adaptive Power Saving - This will set your power-saving mode automatically based on your usage pattern to save your Samsung Galaxy S21 battery life.

17 Boot Phone In Safe Mode

If the issue appears after installing certain apps, try to boot your phone in Safe Mode. This method allows you to restart the device by disabling third-party apps. While in Safe Mode, check the behavior of your phone's battery. If your battery life is normal, one of the apps may be causing the issue. You can uninstall the apps one by one, starting with the ones you installed recently, or you can perform a factory reset.

Here are the steps to boot the phone in Safe Mode:

• Shut down your Samsung Galaxy S21.
• Hold down the Power button until you see the “Power off” message on the screen.
• Tap and hold the “Power off” until the “Safe Mode” prompt appears, then tap it to confirm.
• Let the process finish.
• When the process completes, you will see the “Safe mode” in the lower-left part of the home screen.

18. Factory Data Reset

If you have done all the methods above but still cannot fix the Samsung Galaxy S21 battery issue, performing a Factory Data Reset may help. To use this method, head to

• Settings > General Management > Reset > Factory data reset.
• Then tap Reset, enter your password, and then tap Delete all.