What are you doing with that smartphone? It must be at least half an hour in the Android menus... how do you say? Are you trying to recover the password of your Wi-Fi network to put it on a tablet, but unfortunately you can't find it? To tell the truth, I would have been amazed at the opposite: Android allows you to store the passwords of Wi-Fi networks (like any other operating system for smartphones, tablets or PCs), but does not allow you to view them in clear text.
If you want to recover Android WiFi passwords, you have to install ad-hoc applications and let them "dig" into the Android files: this job requires root permissions. Do you know what I'm talking about? No? Then read my guide on how to root on Android now and see if it's worth continuing or if it's better to recover your Wi-Fi password by other means.
I see you're still here... well, that means you're ready to start. Then take five minutes of free time and find out how to recover your Wi-Fi passwords with Android by following the instructions I'm about to give you. It'll be a lot easier than you imagine: once you've done the root it's all downhill. Have fun!
WiFi Key Recovery
The easiest way to recover Android WiFi passwords is to turn to an application like WiFi Key Recovery that provides a list of wireless connections stored on Android and shows you their passwords in plain text.
How to use it? Download from the Play Store, start and... stop! The main screen of the application automatically displays the names (SSID) and passwords (psk) of all networks stored on the device.
By pressing on one of the networks in the list you can copy its password to the clipboard (Copy password), share it via QR code (Show QR Code) or copy all the information about it to the clipboard (Copy all).
WiFi Connection Manager
If you're looking for a more elaborate solution than WiFi Key Recovery, take a look at WiFi Connection Manager. This application, also completely free of charge, shows you numerous technical details about the Wi-Fi networks that are active nearby and allows you to view the access keys of the connections stored on your device in clear text.
Its interface is divided into tabs: in the one called Scan you can find the list of all the wireless networks active nearby with data such as SSID, signal strength, MAC address and radio channel used; in the Spectrum one you can find a graph with the status of the wireless networks active in the area, while in Network Tools you can find some interesting tools such as ping, Whois, detection of the position of an IP and much more.
To see the password for the network you are connected to, select the network name from the Scan tab, then tap Show password (root permissions required) and you are done.
Manual password search
Would you like to find out a little bit more about how password storage works in Android? Then install a file manager like ES File Explorer and have fun opening the file where the system stores access data for wireless connections.
The file you need to open is called wpa_supplicant.conf and is located in the /data/misc/wifi folder on your smartphone. To reach it, open ES File Explorer, press on the hamburger icon located in the top left corner and move the Root Explorer function stick to ON (at the bottom of the bar on the side).
Then authorize the application to acquire root rights, press the burger icon again and use the sidebar to go to the Device/data/misc/wifi path. Once there, open the wpa_supplicant.conf file, choose to view its contents with ES Note Editor and search for the ssid entry under the name of your Wi-Fi network: that is the network access key.
Wi-Fi Password Testing App
Would you like to discover the password of a Wi-Fi network that is not yet stored on your smartphone? I'm sorry, but if you're trying to find out the access key to someone else's network, I can't help you. Entering someone else's Wi-Fi network without permission is a serious violation of privacy and in some cases even a criminal offence punishable by law.
I can tell you that there are applications, such as WiFi WPS WPA Tester and Router Keygen, that allow you to test the security of wireless networks by revealing if their passwords are easily detectable by malicious people.
These apps include default passwords from some Internet providers and use some cracking techniques to discover passwords for wireless networks not yet stored on your smartphone. You can use them to find out if your Wi-Fi network needs a new password... but not to try to "crack" other people's networks, please! I don't take any responsibility for this.