A cellular outage early on Thursday hit thousands of AT&T users in the United States, disrupting calls, text messages and emergency services in major cities.
Cellular outage in U.S. hits AT&T, T Mobile and Verizon users, Downdetector shows::undefined
While solar flares can affect communication systems, radar, and the Global Positioning System, based on the intensity of the eruption and associated phenomena, it is highly unlikely that these flares contributed to the widely reported cellular network outages.
NOAA says no: