Wireless Support/Device Support/
Email and messaging/
CMAS (Commercial Mobile Alert System)

CMAS (Commercial Mobile Alert System)

This article describes how to use the Commercial Mobile Alert System.

  1. The Commercial Mobile Alert System (CMAS) or Wireless Emergency Alerts (WEA) is a new national public safety system that allows customers who own a CMAS-enabled mobile device to receive geographically-targeted text messages. These broadcast messages will alert customers of imminent threats to their safety within their immediate area.
    device 635/284108.jpg
  2. There are three types of alerts through CMAS:
    • Alerts issued by the President 
    • Alerts involving imminent threats to life or property issued by the National Weather Service or other authorized emergency management agency 
    • Amber Alerts (missing child alert)
    You may choose not to receive Imminent Threat and Amber Alerts (continue to step 4 for details).
    device 635/284107.jpg
  3. Alert messages are provided by approved emergency agencies and delivered via the Federal Emergency Management Agency (FEMA). CMAS does not use the customer mobile number to transmit messages and does not use the GPS location of the device. There is no charge for receiving CMAS messages. Not available in all areas.
    device 635/284106.jpg
  4. From the home screen, tap All.
    device 635/262466.jpg
  5. Tap Emergency Alert Messages.
    device 635/262467.jpg
  6. Press the Blackberry key.
    device 635/262468.jpg
  7. Tap Options.
    device 635/262469.jpg
  8. Tap the Checkmark box next to any alerts you would not like to receive, then tap the Blackberry key.
    device 635/262470.jpg
  9. Tap Save.
    device 635/262471.jpg

Did you get the help you needed?

Great! We're so glad we could help.


We're sorry that didn't solve your issue.


Thanks for your feedback!