The following are three easiest methods to view save WiFi passwords using Android Phone.
1- Using WiFi Key Recovery:
For using this method, you need to Root your android First, because root access is necessary to run the app on your device. Remember rooting may void your mobile warranty, so do it at your own RISK. If you don’t want to root your device then read 3rd method. After that download and install the app Wifi Key Recovery on your Android device (Click Here to Download). Now launch the app and you will see a popup regarding permission for superuser access grant.Then you will be able to see all the wifi networks that you had connected to your Android device along with their passwords. Now just copy the password and get login to that wifi. After recovering the WiFi passwords you can also change the password of that network from the admin panel of a network.
2- Using Wifi Password Recovery App.
In this method, first of all, download Wifi Password Recovery App on your rooted Android smartphone. (Click HERE to Download). After installing it, you need to grant the Root Permission. Now you can see all your saved wifi passwords listed with SSID Name and Pass. Copy the password just by simply tapping on the network to select “Copy password to clipboard”. This is the easiest way to know saved wifi passwords on your android smartphone.
3- Using ES File Explorer
Install ES File Explorer (Click HERE to Download) in your Android device if your default File Manager doesn’t give you the read access to the root folder. After installing ES File Explorer, Find a file named wpa_supplicant.conf in the data/misc/wifi folder. Now open ES File Explorer as built-in text/HTML viewer for the task. In this file, you can see the networks SSID along with their passwords. Note down the network name and its password. You can view all saved wifi passwords on the android device. Don’t edit anything in wpa_supplicant.conf otherwise it can alter your device working or can affect your wifi connectivity.