The number of cases peaked at more than 100,000 Monday morning, according to the website Downdetector. Users complained of being unable to make calls or send texts.

Thousands of Verizon customers reported widespread outages affecting access to phone calls, text messages and cellular data Monday morning. More than 100,000 customers nationwide were affected by the outage at its peak,

For iPhone users, Apple recommends turning on Airplane Mode or restarting your device to see if that allows you to reconnect with the cellular network. In the case of the nationwide Verizon outage, however, those steps likely won’t work until your service has been restored.