Use APKPure App
Get Wifi Password Recovery old version APK for Android
Show your stored Wifi Passwords
This application lists your saved Access Points passwords in your device.
so you can know and remember your accessed networks passwords
u can even save backups of ur config file and load at anytime u want
*******NOTE: Require Rooted Device*******
Please report ur device if its not working with u , so i will try to support it