How can I find saved WiFi passwords within non-rooted phone? I have Android phone which is non-rooted. How can I know the saved WiFi passwords in my phone?
Without root there is no way to find the passwords of Wi-Fi networks on your device. That's because the Wi-Fi passwords are saved in the root folders.

On CyanogenMod devices, and possibly other AOSP ROMs, you should be able to grab it from the /data/misc/wifi/wpa_supplicant.conf file. Without root this is not possible since you won't have permission to read the /data directories.