Nighthawk LTE (ATT) MR1100 keeps cutting out! (rebooting?)

Have this model under ATT.  I think it keeps rebooting very often super annoying!  It does drop all devices and shows the Netgear logo and I can't cycle through the few screens on the device.  after 20-90 seconds all the devices recconect and it goes onward.  This happens sometimes twice on 5 minutes, sometimes once per 30 min but is often.  Firmware says up to date (12.05.01.14)

I was hoping it was an easy firmware.  Any ideas?  Thanks for looking :)