The problems reportedly began for Verizon around 1 a.m., most involving mobile phones, DownDetector.com reported.
They peaked around 8 a.m. before beginning to drop but still were being reported just before 11:30 a.m.
AT&T's problems climbed, meanwhile. Most involved Internet connections.
CHECK FOR OUTAGES IN YOUR AREA: DownDetector.com
Click here to follow Daily Voice Tarrytown-SleepyHollow and receive free news updates.