To change your Frontier Wi-Fi password, look for your network name (SSID) and password on the back, side, or bottom of your Frontier router. Once you have that, follow these steps:
Depending on which brand of router you have, you’ll have a special web address you can use to access your router’s settings. (To find this, just Google the brand of router plus “router login.” (For example, “arris router login” would be your search if you have an ARRIS router.)
Enter the IP address for your router’s dashboard and go to the wireless/Wi-Fi setup section.
Change your password and be sure to save it. This is also where you can change the name of your wireless network if you like.