I have been using a Microcell for over 10 years, about 1 year ago my 3g Microcell died and I switched to a 4g. I was on Xfinity and everything worked fine. A few weeks ago I switched to AT&T internet and now I am only getting cellular service. In other words, I can no longer get the internet or MMS messages. There seems to be some setting in the AT&T router that prevents the internet from connecting to the Microcell. Can someone please help?