Iphone 6s+ & Hubby has a Samsung Flip 4; we have 1 bar on LTE and even that switched to No Service sporadically. We both have restarted our phones & no change. Will try a support ticket.
My Hubby and I are having the same problem today. Haven’t even been able to make phone calls and text messaging is sporadic. Seems to be happening at least once a week. We are in central B.C.