In the Ezhotspot V4, there is a built-in failover feature.
With the Ezhotspot V4, you can concurrently:
1. Connect a LAN cable from a ADSL/Cable/Fiber Modem to the WAN port of the V4
2. Wirelessly connect to to a remote wireless network
3. Connect a 3G/4G dongle to the USB port or tether a smartphone to the V4
all at the same time!
The priority is always given to the WAN ---> Wireless ---> USB manner.
For example, when you have both an existing wireless joined connection and a 3G/4G dongle connected, the priority is always given to the wireless connection. When you lose the wireless connection to the remote hotspot, the internet is automatically switched to the 3G/4G. When you have joined to a new remote wireless network, the internet again is reverted back to the remote wireless hotspot. This ensure that no 3G/4G data is unnecessarily used.