The sticker on the side of the box gives you a "User" password. That gets you nothing. You need the Super Admin credentials. Warning: These vary by ISP, but the generic ZTE defaults are often:
Connect an Ethernet cable from a on the F6640 to the WAN/LAN port of the secondary node. zte f6640 manual pdf mesh
Most people use repeaters . Repeaters suck. They create "Network Name_2.4G_EXT" and you have to manually switch when you go to the bathroom. The sticker on the side of the box
This guide breaks down the "Mesh" functionality found in the F6640 manual, explaining how it works, how to configure it, and troubleshooting tips. Warning: These vary by ISP, but the generic
For further detailed technical diagrams, you can refer to the official ZTE F6640 Datasheet . F6640 Go to product viewer dialog for this item. to change your Wi-Fi name or password? Wi-Fi6 Wireless Router - User Manual - ZTE