Sign in to your Verizon router or Verizon Fios account
Open a web browser and go to the router login page
Enter the router admin username and password
Go to Wireless, WiFi, or Network settings
Find the WiFi password, security key, or WPA key field
Enter a new WiFi password
Save or apply the changes
Reconnect all devices using the new password
If needed, restart the router to make the change take effect