I noticed a drop in the battery performance of my Xiaomi phone after a few months. What are the suggestions for solving this problem?

If your Xiaomi phone's battery is running out, check for apps that use a lot of power and turn them off.

Next, disable functions that you don't need, like Bluetooth, location services, and automatic sync.

Make sure the software on your phone is up to date. Sometimes, MIUI updates can fix problems with the power draining.

You should also clear the app and system cache to get rid of old data that could be slowing down the phone.

These solutions are what we can suggest, if you know more or better ones, please share.