Users have often reported battery depletion following fresh upgrades. While it is true that some upgrades may create this problem, there might be other explanations as well. Let's go over these explanations one by one to figure out what's causing your device's battery to deplete.
Settle Down after an Update
After installing an update and booting the device, the system begins adapting to the new version by performing various changes in the background, which takes some time. And, even after the procedure is complete, it takes a toll on the system, and anything may become trapped functioning in the background. Reboot your device 10-20 minutes after an update to see whether your issue is still present.
Reduce Bloatware
New upgrades may bring in new programmes, bloating the system even more than it was before. More applications mean more background services and more programmes in RAM, so consider debloating your system and inspecting your background processes to see which app is restricting the CPU. There are third-party applications that allow you to examine CPU utilisation, and you can locate and install them for free from the Google Play Store.
If the previously indicated probable causes are not the root of your problem, you should consider reading comments and feedback from other users concerning this new version. If a large number of customers are experiencing this drain, it is most likely due to the new update, and you may choose to revert to your previous version for a more reliable user experience. Because the details of downgrading differ from device to device, you should consult your OEM handbook or seek assistance from your device's community for this procedure. If you try to do it all by yourself, you may end up with bricks or even hardbricks.
Your old data may be displaying discrepancies and causing troubles with the new update. Even if system upgrades are created to prevent these types of problems, software is a complex system that is difficult to regulate every single aspect of. Even big-name coders may make blunders. To be certain that this is the source of your battery depletion, consider erasing your data and beginning over with the latest update.
Even if it is less likely because this issue appears after the update, the risk remains, and you should not dismiss the potential that your battery is deteriorating. Battery life tends to deteriorate over time, and it may be time to replace it. However, you should always examine the battery's health before proceeding with this approach because it is expensive and may not be the solution to your problem.