Always change the password. The User account is not sufficient for secure configuration.
Most ZTE ONT devices use a set of standard default credentials. Depending on your access level (Standard User vs. Super Admin), try the following combinations: Account Type superadmin supportadmin Standard User user User.321 Common Default admin admin Alternative admin 1234 password zte f663nv3a
admin
Before typing in any credentials, it is crucial to understand that there are usually on this device. Confusing these is the number one reason users get locked out. Always change the password
If you are certain you have the right password but cannot log in, try these fixes: try these fixes: