How to find out the saved wifi password on your Android device?
This is only possible on rooted device. You may use an app for that, dozens of which are available in the Playstore. But if you are up to doing it manually, open a root file browser, open data folder, then misc, then wifi.
There is a wpa_supplicant.conf file, open it, and here are all your saved wifi networks.
SSID is the name, PSK is the password, remove the quotes.
model_name=MTK Wireless Model
config_methods=display push_button keypad
Also be aware that next to wifi there is wpa_suplicant folder, which has a wrong file. It doesn’t contain any saved passwords.