Ooma IP phone's display says the network is down or unavailable
If the Ooma IP phone is displaying a message that the network is down or unavailable, make sure that the Ethernet cable is connected to the phone’s INTERNET port.
If your IP phone is wireless-compatible, re-enter the Wi-Fi password. When you are entering the password again, disable the option to hide the password so you can visually confirm that it is entered correctly. If you need help using the keypad to enter the password, visit support.ooma.com/ooma-phone-wi-fi for detailed instructions.