Including myself, to feed my ASUS RT-N66U.

In reply to a post by pluralist:

Actually, yes. Defaulted to bridge mode. As was the Openreach Huawei "modem". Some of us experimented with the latter as a normal modem/router once the unlocked firmware came along.

OK, if I obtain a Huawei "EchoLife HG612 3B" and unlock that can it still be a modem much the same as an ECI but I get to see some stats? I seem to be reading it can also do PPPoE so more than just a bridge modem?

I know its not 4G and going off me original topic but its all part of the same project!

Yes. The unlocked version still defaults to bridge mode but allows the stats. Though IIRC one of the attenuation and power lines duplicates and loses the other in the GUI. Always use the command line to get the stats, which are correct.

Also IIRC no included WAP.

This fits the bill, but it's only Cat4 LTE - may not be a problem if you just need a test setup

https://teltonika-networks.com/product/trb140/

In reply to a post by Woolwich:

Does such a thing exist? A cheap 4G modem I can use with a router to create a test network. Needs to be Ethernet.

If you have money, both have Ethernet ports, but I would assume they do NAT, and unlikely to do a 'bridge' or 'half bridge' mode. This is because the majority of mobile networks don't offer a public IP. (EE in the UK sometimes do on IPv6, and some of Three's connections are).

Netgear M1 (4G) - £287
https://www.amazon.co.uk/NETGEAR-MR1100-100EUS-Night...

Netgear M2 (5G) - £717
https://www.amazon.co.uk/NETGEAR-MR1100-100EUS-Night...