For the ZTE ZXHN F6640 Go to product viewer dialog for this item.

Once you have the root password, the ZTE F6640 transforms from a locked ISP box into a powerful enterprise-grade ONT. Here is what "exclusive" actually buys you:

Change Default Passwords:

Immediately update the "admin" password in the "Management" or "System Tools" section to prevent unauthorized access.

These are the credentials most users are hunting for. These accounts have higher privileges than the standard user account.

If the sticker is missing or unreadable, try these common ZTE defaults: ISP-Specific "Exclusive" Logins