wi fi - Decrypting wpa_supplicant.conf on Samsung Galaxy mobiles

When I do cat on wpa_supplicant.conf file on Samsung mobiles, I see that the passwords are encrypted. But when I open the same file on LG mobiles, I can see the passwords in plain text.

This is what I see on my Galaxy S5. The information below is for my network which has a WPA password 77807780 (psk is the encrypted passkey):

network={
        ssid=""
        psk=fce6c4f64304b00c5783199bbd2b1f91
        key_mgmt=WPA-PSK

        priority=10
        frequency=2462
        autojoin=1
        usable_internet=0
        skip_internet_check=0
}

Is this a feature on Samsung mobiles? What kind of encryption is used to encrypt the password and how to decrypt them?