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Wireless Emergency Alerts
Wireless Emergency Alerts, also known as CMAS or PLAN,
is a U.S. national emergency alert system. Emergency alerts
can pop up to tell you about a national or local crisis.
Tip:
Emergency alerts have a special sound and vibration
that is two seconds long, followed by one second, then
another one second.
To choose which types of alerts you receive, tap Apps
>
Settings
>
More
>
Emergency alerts
. The U.S. and
local governments send these alerts through your service
provider. So you will always receive alerts for the area where
you are, and you won’t receive alerts if you’re outside of the
U.S.
