Use APKPure App
Get Wifi Scanner old version APK for Android
Wifi Scanner can scan the wifi access point nearby.
Wifi Scanner lets you to:
Find wifi access points nearby.
Get their SSID and address(BSSID).
Get the signal strength.
Get the encryption info (WEP, WPA or open) and key types info(TKIP or AES)
With Wifi Scanner, your mobile phones or tablets become a handy wifi-signal detector.