Huawei mobile hotspot (Loudwater HP10)

I have had this sat around for a good period of time and haven’t used it in years.
I think that it is a 3G unit, so may have some issues in terms of compatibility with the networks. It is tied to 3, but there are work arounds on the internet that allegedly free it for all networks.
Battery seems to work well, but can be tied to a battery pack or charger if required.