droopy

Hi! Im looking for a very capable 4G router, here in Sweden we have a brand Dovado for about 100$ but i want to be able to do a bit more whit my gear. so my question is it possible to use the TETRA as an AP and a client at the same time? and can in do a fail-over between 4G and the wifi client? or if im way off! any other tips what i should go for? tanx Droopy from sweden