How to Fix Samsung Galaxy A51 Battery Drain Issue

Fixing Samsung Galaxy A51 Battery Drain Issue

Have you found yourself in a situation at work (or at play) when you need to finish an urgent task and all you have is your Samsung A51? Then, unfortunately, your device battery died on you suddenly, leaving you scrambling for another solution.

Well, to avoid this dire situation from happening again, you have to figure out why it happened and how to stop it.

The Samsung Galaxy A51’s battery drains faster due to excessive background app activity. Various display features like AOD and Edge Lighting also significantly contribute to how much power your phone drains from its battery.

In this post, we’ll show you ten tricks for troubleshooting your Galaxy A51’s battery drain issue. Thanks to these, you stretch your battery life to as long as possible so you can enjoy what you’re doing for far longer. 

FIX 1. Optimize your Galaxy A51’s battery

Difficulty Very Easy ●○○○○
Number of Steps6
Time to Perform Fix30 seconds
Things NeededA Samsung Galaxy A51

For the most part, the Samsung Galaxy A51 battery drain issue isn’t too complicated to fix, thanks to the built-in optimization tool. With this, you can optimize your phone’s battery with a few button clicks and target the culprits behind this problem.

The battery optimization tool lets you stop background activities, address app crashes, delete malware apps, and detect the culprits behind your high battery usage. 

Aside from identifying power-hungry apps using your Galaxy A51’s optimization tool, you can put them to deep sleep. Doing so will significantly reduce your apps’ battery usage by restricting how they operate in your Samsung phone’s background.

Step 1: Go to Settings.

Step 2: Open “Battery and device care.”

Step 3: Click Fix Now or Optimize Now.

Step 4: Click “Show apps causing issues.”

Step 5: Select any app/s.

Step 6: Click Deep Sleep to prohibit background activity
for the selected app/s.


Note: Deep sleeping apps won’t send you notifications or
receive updates unless you open them.

FIX 2. Put your phone apps to sleep

Difficulty Easy ●●○○○
Number of Steps9
Time to Perform Fix40 seconds
Things NeededA Samsung Galaxy A51

You may think this solution is unnecessary since you can put problematic apps into deep sleep via the battery optimization tool. However, putting only your apps to sleep has advantages because it only limits how they run on your phone’s background.

As such, you can continue enjoying certain app features while reducing the overall battery usage. This way, you don’t have to entirely relegate your problematic apps to a position where they become useless so that you can lower your power consumption.

Forcing yourself to compromise isn’t an excellent way to troubleshoot the Galaxy A51 battery drain problem. 

Indeed, if you want to shut down your problematic apps, you should uninstall them rather than keep them deep sleeping without any purpose.

Sure, deep sleeping your apps allows you to re-activate them when necessary, but redownloading most apps isn’t complicated either. Ultimately, it’s up to you whether saving your phone’s storage space is worth more than keeping apps you can’t use.

Step 1: Go to Settings.

Step 2: Open “Battery and device care.”

Step 3: Go to Battery.

Step 4: Select “Background usage limits.”

 
Step 5: Enable “Put unused apps to sleep.”

Step 6: Click “Sleeping apps.”

Step 7: Click the add (+) button.

Step 8: Select any app/s.

Step 9: Click Add to put your selected app/s to sleep.


Note: Sleeping apps can send notifications, but their
background activity is limited.

FIX 3. Enable your Galaxy A51’s power-saving feature

Difficulty Very Easy ●○○○○
Number of Steps3
Time to Perform Fix10 seconds
Things NeededA Samsung Galaxy A51

When reducing your Samsung phone’s power consumption, enabling its built-in power-saving feature is a no-brainer. As the name suggests, this feature lets you save power, which is excellent for fixing your battery drain issue.

While in power-saving mode, your Galaxy A51 extends its battery level by turning off specific features and blocking background activities. It makes a significant difference since your power consumption mostly comes from background apps and processes.

Unfortunately, this may affect how certain apps and features work because some require your phone to be in optimal working condition. 

However, that doesn’t take away from the effectiveness of the power-saving mode in fixing battery drain problems.

Moreover, using this mode regularly is the best way to extend the lifespan of your phone’s battery. It’s an essential feature for Samsung users who plan to use their Galaxy A51 for many years.

Step 1: Pull your Galaxy A51’s notification bar.

Step 2: Pull the notification bar again to expand it.

Step 3: Toggle “Power saving mode” on.

FIX 4. Lower your phone’s screen timeout settings

Difficulty Very Easy ●○○○○
Number of Steps5
Time to Perform Fix20 seconds
Things NeededA Samsung Galaxy A51

Believe it or not, the display screen is the biggest offender regarding your Galaxy A51’s battery-draining problem. After all, your phone’s display uses power whenever you turn it on.

While keeping the display on can’t drain your phone’s battery the fastest, you must note that it always draws power regardless of what you do on your phone. After all, the display screen works whether you’re playing a game or watching a video.

Even when your phone is idle, the power it uses from leaving the display active can stack up over time. As such, lowering your Galaxy A51’s screen timeout settings is best so the display turns off faster, saving the battery’s power in the long run.

Step 1: Go to Settings.

Step 2: Go to Display.

Step 3: Select Screen Timeout.

Step 4: Select 15 seconds.

Step 5: Click the back button to apply the
selected duration.

If, for some reason, you prefer keeping your phone’s display active, you must reduce the screen’s brightness level instead. This way, your Galaxy A51 draws less power even when the display remains active for an extended period.

Reduce screen brightness

Difficulty Very Easy ●○○○○
Number of Steps3
Time to Perform Fix10 seconds
Things NeededA Samsung Galaxy A51
Step 1: Go to Settings.

Step 2: Go to Display.

Step 3: Lower the screen’s brightness level.

FIX 5. Adjust its resolution

Difficulty Very Easy ●○○○○
Number of Steps4
Time to Perform Fix15 seconds
Things NeededA Samsung Galaxy A51

The screen resolution is another critical factor that affects how fast your Galaxy A51’s battery drains its power. After all, better visuals mean your Samsung phone has to consume more power to maintain its display’s graphical quality.

Thus, reducing your Galaxy A51’s screen resolution will translate to longer battery life. It’s a simple solution that will help prevent your phone’s battery from draining fast during use.

Samsung Galaxy A51 phones have three available screen resolutions. While the default FHD+ resolution won’t drain your phone’s battery much, you can set it to HD+ to reduce your power consumption further.

Step 1: Go to Settings.

Step 2: Go to Display.

Step 3: Select Screen Resolution.

Step 4: Select HD+ for the lowest battery use and click Apply to
save your preferred screen resolution.

FIX 6. Turn off your Galaxy A51’s Always On Display

Difficulty Very Easy ●○○○○
Number of Steps3
Time to Perform Fix10 seconds
Things NeededA Samsung Galaxy A51

Turning off your Samsung phone’s display is an excellent way to monitor its battery consumption. When the display screen is inactive, your Galaxy A51 has fewer reasons to draw power from the battery.

However, some features, like Always On Display (AOD), cause your phone to continue consuming power through its display screen. In particular, AOD drains your phone’s battery since it displays information on a turned-off phone screen, hence its name.

Fortunately, AOD isn’t a power-hungry feature, so leaving it on won’t drain much from your phone’s battery. 

Still, it contributes to your Galaxy A51’s battery drain issue, and turning it off is infinitely better if you aim to reduce your power consumption.

Step 1: Go to Settings.

Step 2: Go to Lock Screen.

Step 3: Turn off the Always On Display switch.

FIX 7. Turn off your Galaxy A51’s Edge Lighting

Difficulty Very Easy ●○○○○
Number of Steps7
Time to Perform Fix30 seconds
Things NeededA Samsung Galaxy A51

The Ege Lighting feature is a flashy way to display your phone’s notifications since it turns the screen into an LED indicator. Unfortunately, like AOD, it can affect how fast your Galaxy A51 drains its battery since it draws power even when the screen is off.

Thus, it would be better to consider turning this feature off to prolong your phone’s battery life. Like AOD, Edge Lighting shouldn’t drain much from your Samsung Galaxy A51’s battery, but these little things can stack up over time.

Step 1: Go to Settings.

Step 2: Go to Notifications.

Step 3: Select Brief under the notification
pop-up style.

Step 4: Click “Brief pop-up settings.”

Step 5: Select “Edge lighting style.”

Step 6: Select None under the Effects tab.

Step 7: Click Done to apply the selected effect.

FIX 8. Turn off mobile data in poor signal areas

Difficulty Very Easy ●○○○○
Number of Steps1
Time to Perform Fix5 to 10 seconds
Things NeededA Samsung Galaxy A51

Believe it or not, your Samsung phone will continue to drain power due to its background apps and processes. In particular, network services are among the most significant contributing factors to the Galaxy A51’s battery drain issue.

In particular, leaving your mobile data connection on your unused phone is among the biggest offenders. After all, your phone keeps communicating with your network provider’s cell towers, increasing the power it draws even while idle.

Unfortunately, the effect is more significant if you’re in an area with a terrible signal reception. In such cases, your phone will constantly scan for a better signal, increasing the power it drains from the battery.

FIX 9. Turn off all unused network connectivity features

Difficulty Very Easy ●○○○○
Number of Steps4
Time to Perform Fix10 seconds
Things NeededA Samsung Galaxy A51

As mentioned, network connectivity services are likely culprits regarding the Samsung Galaxy A51’s battery drain issue. As such, keeping these connectivity features off is the wisest action, especially when you’re not using your phone.

This way, you can massively reduce your Samsung phone’s overall power consumption. Doing so will ensure your Galaxy A51’s battery doesn’t drain faster.

Step 1: Pull your Galaxy A51’s
notification bar.

Step 2: Pull the notification bar again
to expand it.

Step 3: Turn off the switch for WiFi, Bluetooth, Mobile Data,
and Location Services.

Step 4: Turn on Airplane or Flight Mode to temporarily
switch off all network services.


Note: Airplane mode isn’t ideal for keeping one or two connectivity
services active since it turns off everything simultaneously.

FIX 10. Turn off your phone’s nearby device scanning

Difficulty Very Easy ●○○○○
Number of Steps4
Time to Perform Fix10 seconds
Things NeededA Samsung Galaxy A51

If scanning for a better signal reception significantly contributes to your Galaxy A51’s battery drain issue, the same applies to nearby devices. After all, this feature will constantly check for compatible devices in your Samsung phone’s proximity.

It’s how your Galaxy A51 can quickly connect with nearby Galaxy Buds, Galaxy Watches, and other SmartThings-supported devices. Therefore, we suggest turning off Nearby Device Scanning on your Samsung phone to save more power.

Step 1: Go to Settings.

Step 2: Go to Connections.

Step 3: Go to More Connection Settings.

Step 4: Turn off Nearby Device Scanning.

FAQs about Samsung Galaxy A51 Battery

Why is my Samsung A51 phone’s battery draining very fast? 


Background apps and processes are the most common reason your Samsung Galaxy A51’s battery drains fast. Running multiple or graphics-intensive apps will also draw more power, causing your phone’s battery to drain faster.

How can I make the Galaxy A51’s battery last longer? 


Enabling power-saving mode is the best way to make your Galaxy A51’s battery last longer. It reduces power consumption and facilitates good battery health, crucial for lengthening its lifespan.

How long does the Galaxy A51’s battery last?


Ten to fifteen hours is the average battery life of the Galaxy A51. It may become shorter or longer depending on how you use your phone.


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