This is self-evident. Whether or not there are concerns, it is critical to always install the most recent available update to avoid complications.
When charging your phone, try to turn it off.
This may seem uncomfortable, especially if you can't live without your smartphone for more than a few hours, but we strongly advise you to do so for the purpose of troubleshooting. If your phone charges properly or quicker after being turned off, it's either a firmware issue or an app that's causing the issue.
Restore the factory for a second time.
If the problem is caused by an app, a full restore may be ineffective. That implies that after the reset, you are merely re-installing the root of the problem. After a restoration, keep an eye on how the phone operates for 24 hours without downloading any third-party apps. This way you can confirm if one of your apps is to blame.