I've quite the same problem BUT with more probleme because it's not only random disconnecting BUT also bad access to some website where it works fine on sharing internet with the same SIM on an old...

Hi, Using the MR6400 as 4G router, i got problem when browsing(Firefox) on Aliexpress website (right clic on order), no display or an error BUT setting the same SIM (Zeop operator and LTE...