LAN and Wi-Fi devices cannot connect or ping 

Some WIFI and LAN cant connect :
Cant connect computer LAN to WIFI device
Cant Ping from computer to Smartphone, ANdroid TV
Unable to Ping LAN devices from WiFi the same network
Ping local network from wired to wireless is not working
Cannot ping devices in the same local network
Lan and wifi devices don't see each other, no ping and no data transfer
Problems pinging a wireless device from the wired LAN
Why am I unable to ping another computer in the same network (LAN)
The wired LAN connects via main router
When the LAN (Local Area Network) is connected to the Wi-Fi router provided by your internet service provider (ISP), LAN devices connected directly to the router's Port 1 might not be able to communicate with Wi-Fi devices on the same network.
Here's why:
Some ISPs require a specific LAN port, often Port 1, for the fiber optic internet connection to function.Devices plugged into this port (Port 1) may be isolated from Wi-Fi devices on the network.
How to fix, WIFI and LAN can connected
To allow both wired and Wi-Fi devices to connect:
Use a different LAN port (Port 2, 3, or 4) for your ZTE modem's connection.This frees up Port 1 for the fiber optic internet while enabling communication between wired and Wi-Fi devices through the other LAN ports.
Test hardware
ZTE F609 GPON
Wired LAN Cat6
WIFI Android and Android Device

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