About this app

CellularOne is proud to offer the Commercial Mobile Alert System or CMAS. Download and install now CellularOne's new emergency alert system app and you will be notified of adverse weather conditions, extreme & severe imminent threat warnings, Amber alerts, and Presidential alerts. CMAS is a wireless version of the Emergency Broadcast System.

We are not a government entity nor are affiliated with any law enforcement agency. We do not guarantee that you will receive alerts issued by any emergency alert entity or agency.

CMAS is a wireless version of the Emergency Broadcast System.

Q: Who sends CMAS alerts?
A: Most are originated by the National Weather Service. Some alerts such as Amber alerts are prompted by local law enforcement. All alerts first pass through the FEMA alerting gateway for verification and are then distributed to the mobile network.
Q: Do I have to have a smartphone to use the CMAS app?
A: Yes. Today CMAS is only available to Cellular One smartphone users via this app.
Q: What type of alerts will be made available to the public through CMAS?
A: Adverse weather conditions in the form of extreme & severe imminent threat warnings, Amber alerts, and Presidential alerts are distributed via this app. More common weather events such as severe thunderstorms and weather events which are not sudden in nature such as hurricanes and blizzards are not sent through the FEMA system and will not be delivered by this app.
Q. Will wireless customers be charged for CMAS/WEA alerts?
A. Wireless customers will not be charged for the receipt of CMAS messages.
Q. Will CMAS track a person’s location?
A. No, CMAS will not track any personally identifiable individual’s locations or personal data. This assures that authorities cannot collect any subscriber-related data. The app will access location services on your handset in order to provide you with only alerts which affect your area, but this information is not stored or retained historically.

New features

This release of the CellularOne AZ CMAS/WEA app provides support for Android API version 34.

App Permissions

Allows applications to open network sockets.
Allows applications to access information about networks.
Allows access to the vibrator.
Allows an app to access approximate location.
Allows an app to access precise location.
Allows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.
Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call.
Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Allows applications to access information about Wi-Fi networks.
Permission an application must hold in order to use ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS.
Allows an application to read from external storage.
Marker permission for applications that wish to access notification policy.