Recommend:
To the knowledge base

Can the FRITZ!Box be used as a multi-WAN router?

Your FRITZ!Box does not support connecting several internet connections. Therefore, your FRITZ!Box cannot be used as a multi-WAN router to establish simultaneous internet connections via the WAN interface, a LAN interface, or a connected mobile broadband modem.

Note:Only the FRITZ!Box 6890 LTE supports the simultaneous use of mobile, DSL, or WAN internet connections (for example via a cable modem). When combinding LTE and DSL, downstream data rates of up to 600 Mbit/s are possible.