Android phones will be restarted automatically after 3 days if they are not touched. That is why

Google Systems April updates Include a new security feature. If you leave your own Android phone or tablet device Closed for three consecutive days, your device will be restarted automatically. You will need to re -enter your passcode to open the device.

The latest Google Play Services update is designed to better protect your data when you don’t use your device. It’s the latest addition to Included safety and privacy features in Android.

The forced restart of Android is a way to keep your data safe without forcing you to run your phone, which many of us rarely do for several days (or weeks) every time.