Anyone still have AT&T Mobley Unlimited Data Plan? Help

I too have had Mobley since almost day one.   Several years ago, I took the card out of the Mobley and put it in a Netgear router.  It supports up to 20 concurrent users.  There are only two of us, so we usually have about 6/7 items connected at anyone time. Speed is much better than  the  Mobley too. The Netgear router I have is a Nighthawk M1  ( MR1100).    ( Hope that helps--- I seldom come on this site anymore since they changed the format, so goodluck)