Wireless Public Alerts
Starting April 6, 2018, Canadians will begin receiving
life-saving emergency alerts to cell phones and wireless devices that are compatible
with Wireless Public Alerting (WPA). The Canadian Wireless Public Alert system was
developed by the federal government in partnership with the provinces and territories,
Pelmorex Inc., and wireless service providers.
This national system complements all the current Alberta
Emergency Alert message delivery services such as the website, Facebook and Twitter,
and the mobile app. Albertans can follow any one of these to receive more detailed
instructions and information in the event of an emergency. The following are frequently
asked questions and their answers on the national and the Alberta Emergency Alert systems.
Wireless Public Alerting - Frequently Asked Questions
- 1. What is wireless public alerting?
- Wireless public alerting allows governments across Canada to send public
safety messages directly to smartphones in a region. If there is an emergency in
your local area you will get an alert on your compatible smartphone. For your
phone to be compatible it should be connected to the 4G LTE network through your
cell phone provider. You can learn more at alertready.ca,
and check if your phone is compatible to receive wireless alerts.
- 2. Will all wireless devices receive alerts?
- No. In order for emergency alerts to be received on a wireless device,
three conditions must be met. The wireless device must be:
1. An LTE-device like a smartphone (LTE is commonly referred to as "4G LTE");
2. Wireless public alerting (WPA)-compatible; and
3. Connected to an LTE cellular network at the time the emergency alert is issued.
Visit the AlertReady website to find
a link to your wireless service provider's website that provides
information on compatible devices.
- 3. Are these wireless alerts sent as a text message?
- No. While the wireless alert may look like a text message, it is not a
text message. Wireless alerts are sent via cell broadcast distribution. Cell
broadcast, similar to radio broadcast, is technology that allows messages to be
broadcast to all compatible wireless devices within a designated geographical
area. The alerts are one-way messages, there is no tool to reply to them.
Cell broadcast can be compared to radio broadcast. Radio towers broadcast music
to people in defined geographic areas as long as the individuals can pick-up the
broadcast signal and have their radios turned on. Cell broadcast messages
similarly are delivered to those compatible wireless devices that are within
range of cell towers and antennas in the designated area.
- 4. Are other mobile devices (e.g. tablets) capable of receiving
- Wireless service providers are required to distribute wireless emergency
alerts to compatible smartphones that can access LTE cellular networks. Additional
wireless devices such as tablets and smartwatches may be capable to receive some
form of the message. However, it will not necessarily be received on the device
in the Alert Ready format.
For information on compatible wireless devices offered by your wireless service
provider, visit the AlertReady website.
- 5. Will wireless alerts interrupt or end a voice-call or another
activity in progress?
- Wireless alerts will not end or terminate a voice call or data session
If you are on a voice-call when the wireless alert is received, you will be made
aware of the alert by a notification tone (similar to call waiting). When your
call ends, the alert will be displayed on your wireless device.
If you are on a data session, your session will continue, but it may be briefly
interrupted by the alert appearing on your wireless device screen.
- 6. Will I receive a wireless alert if my device is off or
set to silent?
- A compatible wireless device that is turned off will not display an
alert. If the alert is still active when the wireless device is powered on and
the user is still in the alert area, the wireless device will then display the
A compatible wireless device that is set to silent will display an alert, but
you might not hear the alert sound. The emergency alert sound will usually play
at whatever the current volume setting is on the wireless device, so if your
wireless device is set to silent, no sound will accompany the emergency alert
message. In some instances the alert sound may override your user settings.
- 7. If my wireless device is off for an extended period of time,
will the wireless alert appear once I turn my phone back on?
- If the wireless alert is still active when the compatible device is
turned back on and you are within the alert area, the wireless alert will be
displayed. If the alert is no longer active or if you have travelled outside
of the alert area, it will not be displayed.
- 8. Will I receive a wireless alert if my phone is connected to
- If the compatible wireless device can still communicate with the LTE
cellular network while on Wi-Fi, it will receive wireless alerts. If the wireless
device is not within reach of the LTE cellular network or is set to Wi-Fi only,
it will not receive an alert.
- 9. What should I do if I receive a test alert on my wireless
- Test alert messages will be identified as such. Test alerts are intended
to test the functionality of the system and inform consumers of wireless alerts.
Test alerts do not require the consumer to take steps to secure their safety.
You may be required to acknowledge receipt of the wireless alert in order to
allow for your wireless device to resume normal functioning. In the event that
you cannot acknowledge the alert, the alert sound and vibration will continue
for eight seconds. Depending on your specific wireless device, additional
reminders may occur.
- 10. What should I do if I receive an alert on my wireless device?
- Upon receiving the wireless alert, it is important to take action safely.
Stop what you are doing when it is safe to do so and read the alert. The alert
will include information from government officials on any actions you need to take.
- 11. What should I do if I receive an alert on my wireless
device while driving?
- It is important to take action safely, especially if the alert is
received while operating a vehicle. If you are driving, it is important to remain
calm and pull over at your earliest opportunity to view the wireless alert.
- 12. If I don't have unlimited texting or data within my mobile
plan, will I be charged if I receive an emergency alert on my wireless device?
- Wireless alerts are sent on a specific cellular channel that is separate
from normal text and data traffic. While the alerts may look like text messages,
they are not text messages and are not billed like text messages.
Wireless alerts do not require the phone numbers of cell phones, so there is no
ability to identify or bill for the messages that are received.
- 13. Can I opt out of receiving emergency alerts on my wireless
- No. Emergency alerts received on your compatible wireless device are
relevant to you and require immediate attention. Emergency alerts are targeted,
so if an alert reaches your device, you are in an area where there is immediate
Government of Canada regulations require that all compatible wireless devices
receive all relevant alerts.
- 14. Will I receive alerts on my wireless device if I'm
travelling to or from another province or jurisdiction within Canada?
- Yes. Wireless alerts are issued to a defined geographic area so that
only people in the defined area will receive the alerts. If you are travelling
and happen to be in another province when an alert is issued, your compatible
wireless device will receive the alert for the area you are currently in, provided
your phone is powered on and connected to the LTE cellular network.
- 15. Will I receive alerts on my wireless device relevant to
where I live while I am travelling away from home?
- No. If you are travelling, you will only receive wireless alerts that
occur where you are.
Canadians can keep track of emergency alerts occurring in specific areas through
the Alberta Emergency Alert app and website.
- 16. Will I still receive alerts if wireless device towers are
affected by the situation?
- Alerts are broadcast from cellular towers and antennas within the area
specified by the alert issuer. If you are in an affected area but your wireless
device is unable to connect to any towers/antennas because of the situation, you
will not receive the alert on your wireless device. However, if your device still
has WiFi access, it may be possible to receive emergency alerts through the Alberta
Emergency Alert App. So make sure you download the app on your phone.
- 17. Will alerts sent to my wireless device be used to gather
data about me?
- No. Wireless alerts are sent using Cell Broadcast distribution. Cell
Broadcast can only transmit information to your wireless device like a radio
or TV. This means that no data is being gathered about you, your wireless device
or your location when wireless alerts are sent out.
- 18. Why are you testing the wireless alert system again?
- We need to test our systems on a regular basis to not only make sure it is
working well but also to make sure Albertans will receive information, if and when
they need it. In other words, we're testing the system to make sure it works during
emergencies. Think of it this way: you get regular oil changes on your car to make
sure it runs well when you head out on the highway.
We're doing the same thing: we're testing and fine-tuning our alerting system as
part of good emergency management practices. This is an extension of past practices
in that Alberta routinely tested its alerting system every quarter by sending out
test messages through all its channels.
- 19. How often will you test this system in the future?
- Going forward, the system will be tested twice a year on all mediums - in May,
during Emergency Preparedness Week, and on the last Wednesday in November. Alberta
has aligned with the rest of Canada to test twice a year given the reach of the new
- 20. Why can't you just use radio, television, websites, and the
Alberta Emergency Alert system to notify Albertans?
- Each of those mediums is a proven tool to get emergency messages to Albertans.
Alberta Emergency Alert also uses social media, road signs, targeted email to
Government employees and amateur radio. People's preferred communication choices
evolve and emergency alerting needs to evolve with them. As a result, we can send
alerts directly to compatible smartphones in an affected region using this technology.
Only the most serious alerts will be sent to wireless devices. Wireless alerts will
contain only basic information designed to give you life-saving information. Other
Alberta Emergency Alert methods, such as the app and website, provide more detailed
information on developing and urgent issues. It includes maps and links to
additional sources. The various distribution methods compliment each other with
a consistent message.
- 21. What is the difference between the Alberta Emergency
Alert app and the new wireless alert?
- Only the most serious alerts will be sent out using the new wireless
alerting system. Other alerts that provide information on developing emergencies
or serious alerts from other areas will be delivered to you via the Alberta
Emergency Alert app, social media and the Alberta Emergency Alert website. The
wireless alert message will only contain basic information, and maps and more
details will be available from the app and website.
- 22. Will I receive wireless alerts, if I have the Alberta
Emergency Alert app on my smart phone?
- The wireless alert messages will be delivered to your wireless device
only if you are in the impacted area. Depending on your preference, the Alberta
Emergency Alert app could receive alerts for the entire province.
- 23. Can I remove the Alberta Emergency Alert app from my
phone now that wireless alerts are being sent to me?
- This is not recommended. The app and wireless alert message are
complementary with the wireless alert being a short message and the app
providing more detail and a map.
- 24. Will the alert go off on my smartphone twice if I have
the Alberta Emergency Alert app and receive a wireless alert message?
- Yes. You will receive two alerts. However, we are working to blend the
two systems so that only one alarm is sounded for the alert.