If you are having the “Unable to Scan networks” error message when wifi is enabled, it’s a known problem with some vendor builds of Android.

There are a few possible workarounds to this bug:

In Android’s settings, remove all Wifi networks, if there are any there.

Reboot your device.

Go to Android Settings:Privacy and do a factory data reset.

I’ll be adding this to the known issues page of Wifi Fixer’s documentation.