Before you begin to unroot your android phone, make sure
you have done the following:
Backup your data: While unrooting, all the data will be
wiped out. so make sure to backup all your important
data either on your SD card or your PC.
Charge your phone : Ensure that battery is charged to
more than 50%.
Method #1: Use SuperSU app
This method will definately for all android devices that were
rooted without installing custom recovery.
First, download and install SuperSU app from Play Store .
2. Launch SuperSU app, go to Settings, and tap on ‘Full
3. It will confirm you just tap continue. After successful,
will close automatically
4. Restart your device
5. Uninstall SuperSU and you are fully unrooted.