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Some time ago I visited a friend, and had him enter the Wi-Fi password in my phone. Next time I visited I had my PC with me, the PC of course was not able to connect to the network without the password. Being too lazy I was trying to figure out if there is any way to recall the password saved on my phone; turns out, there is.

Note: On Android, this requires root access.

  1. Open a file explorer1 which has the availability to browse as root. I personally use FX File Explorer with root addon.
  2. Open the following file in a text reader:

    /data/misc/wifi/wpa_supplicant.conf
    
  3. Scroll down until you find the network and the PSK you are looking for.

Easy as that.

Update 1 (2017-12-26): To find saved PSK on Windows 10.
Update 2 (2017-01-18): Command for using adb:

adb shell "su -c 'cat /data/misc/wifi/wpa_supplicant.conf'"

Source: XDA

Links

Play Store - FX File Explorer
Play Store - FX File Explorer Root Addon
XDA Developers - Any way to retrieve stored wifi password from Android device without root and ADB??
Windows 10: Find Wi Fi Password


  1. You can also retrieve using ADB instead if that is more convenient, see update two above. [return]
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