We recently purchased a 4G router to evaluate it and to see if it provided better connectivity.
The ideal feature about this device is the sim-card-slot on the back of the device. Plug in and ready-to go.
We used an EE SIM (any SIM will work) and when plugged in provided immediate 4G access via the LAN cable or Wifi from the router to your video production laptop. You can setup wifi connectivity as well as hare access via the 4 lan ports.
Our first outing was where we streamed 10 games over a two-day period, with a data usage of 26GB. We had no drop-outs and a stable stream over the period.
The unit can laso be connected to the local LAN connection to provide WAN connectivity.
In our location we managed a 22Mbps upload spend, ideal for two streams uploading at 1.5Mbps each.