Mexico’s Telecommunications Regulatory Commission (Comisión Reguladora de Telecomunicaciones, CRT) updated the rules for emergency alerts on mobile phones. In addition to the Earthquake Alert, phones will display alerts for hurricanes, floods, fires, volcanic activity and landslides, plus preventive Civil Protection notices. It is good news for public safety, and a good moment to clarify how these alerts differ from the SMS messages that companies send. Emergency alerts on mobile phones and business SMS use different technologies, which explains most of their differences.
What the new regulation changes
According to published information, the CRT Plenary approved on August 26, 2026 an amendment to Technical Disposition IFT-011-2022 (Part 3), which governs emergency alerts on mobile devices. It was published in the Official Gazette (Diario Oficial de la Federación) on August 28 and takes effect on October 27, 2026. Rollout on the networks is expected in the last quarter of the year, once carriers adapt their systems.
The regulation sorts alerts into three categories:
- Maximum Earthquake Alert (Alerta Máxima por Sismo): works as before, with its usual sound.
- Maximum Alert (Alerta Máxima) for other hazards: hurricanes, floods, fires, volcanic activity and landslides, among others, with its own sound and vibration.
- Civil Protection Notice (Aviso de Protección Civil): preventive messages about severe rain, extreme cold fronts, heat waves or poor air quality, which can be sent hours or days in advance and also after an emergency.
As reported by the press, these alerts appear as a pop-up, need no airtime balance or internet connection, and cannot be turned off by the user.
How they work: cell broadcast, not one-to-one messages
Emergency alerts use cell broadcast: the authority sends a single notice and the network transmits it to every phone connected to the towers in an area. No phone numbers or contact lists are involved, which is why it can reach millions of people in seconds, even when the network is congested. The trade-off is that there is no individual confirmation that each person received it, and the message is the same for everyone.
Emergency alerts vs. business SMS: how they differ
| Emergency alert (cell broadcast) | Business SMS | |
|---|---|---|
| Who sends it | Civil Protection authorities | Companies and institutions, to their own customers |
| Who receives it | Every phone in an area | Specific numbers in your contact base |
| Content | A general notice, the same for everyone | Personalized: name, amount, date, code |
| Delivery confirmation | No per-user confirmation | Delivery status (DLR) for every message |
| Can it be turned off? | No | Customers can opt out of promotional messages |
| Typical uses | Risks to the population | OTP codes, transactional alerts, reminders and operational notices |
They do not compete. The official alert warns about the risk; your company’s SMS tells each customer what changes for them: whether their branch closes early, their delivery is rescheduled or their appointment moves.
What it means for companies
- Prepare contingency templates. Have messages for closures, schedule changes or rescheduled deliveries ready and approved, so you do not write them in the middle of an emergency.
- Make sure no one mistakes your message for an official alert. Do not imitate the format or wording of government alerts, such as “Alerta Máxima”. Always identify your brand with an alphanumeric sender ID and avoid dubious links; fraudsters often exploit these moments, as we explain in our smishing guide.
- Check delivery reports. During a contingency, knowing which messages arrived and which did not is what lets you retry or switch channels in time.
- Keep your contact base up to date. With the staggered suspension of lines not registered with a CURP, some numbers in your base may stop receiving messages.
Examples of contingency messages
- “[Your brand]: due to heavy rain, our Centro branch will close today at 3:00 p.m. Online services remain available at [link].”
- “[Your brand]: due to weather conditions, delivery of order 4521 is rescheduled for tomorrow. No action needed; we will let you know when it is on its way.”
- “[Your brand]: your Thursday appointment stands. If you prefer to change it because of the cold front, reply CHANGE.”
If you want this kind of communication ready to go, Grupo Tecnophone can help you set up templates, sender ID and delivery reports.
Sources
- “Tu celular tendrá nuevos sonidos de emergencia además de la alerta sísmica y no podrás desactivarlos”, Expansión Política, September 7, 2026. View source
- “Celulares en México ya reciben alertas sísmicas y ahora también alertarán por huracanes, inundaciones, incendios, volcanes y deslaves”, El Imparcial, September 7, 2026. View source
- “Mexico IFT-011-2022 Cell Broadcast Amendment Effective Oct 27, 2026”, GMA Labs, September 22, 2026. View source
