Share known WiFi networks between own devices It happens every now and then that I connect to a WiFi network for the first time on my phone, but not on my tablet. The second time I visit the place I might not have the WiFi access key at hand.
Is there a way to "share" the known network information between own Android devices?
If you want to back up and restore though Google (Drive) then perhaps you  may need to look at some third-party applications such as
WiFi Password Manager or Wi-Fi password manager (whichever you prefer as there are more or less similar)

Basically the following features are present:


  
  Manage your wifi passwords (add, edit, delete)
  Backup your passwords to Google Drive or to local storage
  Wifi hotspots list sorted by wifi signal strength
  Recover wi-fi passwords from system settings (ROOT)
  Connect to WiFi hotspot directly from the appplication
  Copy password to clipboard
  Share wi-fi settings
  


Pretty straight forward to use simply add the target wi-fi network, then back it up on local or google drive, follow the reverse proceedure to restore: