Why is my android phone keeps on uninstalling app by itself?

[Android Central Question]

My Oppo CPH1725 keeps on uninstalling random apps automatically. When it does this, I restart it and sometimes the app returns but most of the times it does not and I have to reinstall the lost apps. Please help!

 

[SpookDroid]

Are these apps moved to SD card by any chance? If so, the card might be failing and every time the card disappears or the data cannot be accessed, the app associated with it goes away. That's why it's not advisable to use the SD card for app storage.