Do you know? Many Android phone presets will turn on "Android system automatic update", once there is a new Android version, it will automatically download the update file for the phone and update to the latest Android version, but there will be a disadvantage.

"Android automatic update" is quite convenient for many mobile phone users, because they do not have to manually update themselves every time, but the disadvantage is that they may cause insufficient storage space.
If you don't want to automatically update the software version, you can do this if you want to change to manual:
Teach you Android to turn off system automatic update steps:
✅ Step 1: Turn on "Settings" for android phones
✅ Step 2: Click on "Software Update"
✅ Step 3: Turn off "Auto download over Wi-Fi"
This completes the need for Android to turn off the automatic update system. As for the shutdown of other Android phones, it is much the same.