I’m curious to get some insight or instructions how to open the case to either replace the LTE modem or add external antenna. Obviously there are three screws under the sim cover that help hold the cover on but the case is still tight and I’d rather not crack the plastic. If there are more screw holds or the seam is just being held with teeth along the edge?
By the way, even the stock sim cover is too tight, it should be easier to open. I have filed one the teeth down a bit just to avoid this frustration.