Some Wi-Fi networks are encrypted with a WEP or WPA key. To access the Wi-Fi network with your Android or any other device, you need to enter the WEP or WPA key into the Wireless Password input box for the secured wireless connection. If you need to recover the WEP or WPA key from your Android device, you can do so through the Wireless and Network settings on the smartphone.
Tap the "Settings" icon on the Home screen of the Android device.
Tap the "Wireless and Network" option.
Tap on the wireless connection listed at the bottom of the page to view its WEP settings.
Check the check box in front of the "Show Password" option. Your WEP or WPA key is displayed for the Android.