By Jenefey Aaron

Updated on 2025-05-15

100 % Helpful

One UI 7 Battery Drain — What's Going On and How to Fix It

By Jenefey Aaron

2025-05-15 / Fix Android

Samsung has finally rolled out the long-awaited One UI 7 update, but many Galaxy S24 and Z Fold 6 users are now reporting faster battery drain. Across forums and Reddit, users say their devices are ending the day with much less charge than before—some dropping from 45% to just 20% after the update. Additionally, many users are experiencing noticeable device overheating.

While it's not uncommon to see temporary battery issues after major software updates, the scale and consistency of these reports suggest there may be more to the story. Let’s take a closer look at the possible causes of this battery drain and what users can do to fix or minimize it.

Part 1. Why does the One UI 7 Battery Drain So Fast After Update?

Part 2. How do I Stop One UI 7 from Draining My Battery?

Method 1. Wait for the System to Settle After the Update
Method 2. Run the Galaxy App Booster
Method 3. Open Low Performance Mode
Method 4. Avoid Skipping Versions When Updating
Method 5. Perform a Factory Reset to Eliminate Software Conflicts

Part 3. Fix Persistent Battery Issues with a System Repair Tool [Recommended]

Part 4. FAQs about One UI 7 Battery Drain

Part 1. Why does the One UI 7 Battery Drain So Fast After Update?

The exact cause of the fast battery drain after updating to One UI 7 is not yet clear, but it could be related to the size of the update, which may affect various system components.

While some users have experienced increased battery drain, others report improvements, suggesting that it may be a temporary issue that could be resolved with time or a future update from Samsung. Additionally, it's possible that battery drain could have been a factor in the delay of the update, though this is purely speculative.

Part 2. How do I Stop One UI 7 from Draining My Battery?

To help address the battery drain issue with One UI 7, we’ve gathered various solutions from different platforms and user reports. These solutions come from real-world experiences and expert advice, and we hope they will be useful in resolving the battery drain problem you're facing. Below, we’ve outlined some of the most effective methods to stop One UI 7 from draining your battery.

Method 1. Wait for the System to Settle After the Update

After major software updates like One UI 7, it’s normal for the system to go through a short adaptation period—usually about a week. During this time, background tasks such as app optimization, indexing, and system calibration may temporarily increase battery usage and cause the device to heat up.

If the battery drain isn't severe, consider waiting a few days to see if the situation improves on its own. Many users have reported that battery performance returns to normal after this initial adjustment period.

Method 2. Run the Galaxy App Booster

The Galaxy App Booster is designed to optimize your device by clearing out unnecessary processes and improving overall system performance, which can help reduce battery drain. Users have reported that running this program once after an update resolves the issue, likely by recalibrating system settings and stopping background processes that may be consuming excessive power.

However, before you can run the Galaxy App Booster, you need to download Good Guardians, which is available in the built-in Android app store.

Steps to Resolve Battery Drain:

Step 1: Download Good Guardians

Open the built-in Android app store on your Galaxy device.
Search for Good Guardians and download it. This app is necessary to run the Galaxy App Booster.

Step 2: Run Galaxy App Booster

Open Good Guardians once it’s installed.
Locate and open the Galaxy App Booster within the app.
Run the program to optimize your device and help address battery drain issues.

By completing these steps, you can improve your device's battery performance and potentially resolve the fast battery drain problem that has been reported after the One UI 7 update.

Method 3. Open Low Performance Mode

Low performance mode on One UI 7 helps extend battery life and reduce heat by limiting the use of system resources. When enabled, the device's CPU, GPU, and other hardware performance are throttled, which may reduce the overall speed of the device but improves battery performance and minimizes overheating.

Steps to Resolve Battery Drain:

Step 1: Open Settings

On your Galaxy device, go to the Settings app.

Step 2: Navigate to Battery Settings

Scroll down and tap on Battery and Device Care.

Step 3: Select Battery

In the Battery and Device Care section, tap on Battery.

Step 4: Enable Power Saving Mode

Tap on Power Saving Mode (this may also be labeled as "Battery Saver" on some models).

Step 5: Activate Low Performance Mode

Once in Power Saving Mode, toggle the switch to turn it on. You can customize the settings by selecting "Maximum power saving" to reduce performance further and maximize battery life.

Step 6: Confirm and Exit

Confirm your selection and exit the settings. Your device will now run with reduced performance, helping to save battery and reduce heat.

Method 4. Avoid Skipping Versions When Updating

If possible, avoid skipping major One UI versions when updating your device. Jumping multiple versions at once can lead to compatibility issues, background process conflicts, and increased battery drain. A gradual update path allows the system to adapt more smoothly and ensures better optimization across apps and system components. If you’ve skipped versions, a factory reset after the update may help stabilize performance.

Method 5. Perform a Factory Reset to Eliminate Software Conflicts

If battery drain issues persist after trying other fixes, performing a factory reset can help. This removes leftover data, settings, or app conflicts that may have carried over during the update—especially if you skipped versions or restored from a backup. Make sure to back up your important data before proceeding.

Part 3. Fix Persistent Battery Issues with a System Repair Tool [Recommended]

Even after applying the solutions above, some users may continue to experience abnormal battery drain or overheating. This often points to deeper system-level glitches that typical fixes can’t resolve. In such cases, using a professional repair tool like Tenorshare ReiBoot for Android can help. It’s designed to fix common Android issues—such as battery drain, system lag, and app malfunctions—without wiping your data, helping restore your device to peak performance in just a few steps.

Download ReiBoot for Android on your computer.Connect your Android device to the PC using a USB cable, ensuring that USB Debugging is enabled on your phone.
Select Repair Android System on ReiBoot's interface and choose Repair Now.
Enter your device information correctly, then click Next.
ReiBoot for Android will begin downloading the appropriate firmware for your device. Wait for the download to complete.
Click Repair Now to start the repair process. Follow any on-screen prompts carefully.
Once the repair is successful, you’ll see a confirmation message on your computer. Click Done to complete, then disconnect your phone.

Part 4. FAQs about One UI 7 Battery Drain

Q1. Is one UI 7 battery efficient?

It depends on the device and usage—some users report good performance, while others experience battery drain after updating.

Q2. Is a 1% battery drain in 3 minutes normal?

Yes, that’s generally normal, especially if you're actively using the phone or have background apps running.

Q3. Is 3% battery drain overnight normal?

Yes, a 3% drain overnight in standby mode is considered normal.

Conclusion

Battery drain after major updates like One UI 7 isn’t uncommon, but it can be frustrating—especially when it affects day-to-day use. While minor performance issues may resolve after a short adjustment period, more persistent problems often require targeted solutions like adjusting settings, using optimization tools, or even performing a factory reset. For deeper system issues, a repair tool like Tenorshare ReiBoot for Android can help restore battery performance without data loss. Try the solutions above and get your Galaxy device running smoothly again.

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