Mexico City – If you have a Mexican cell phone number, the clock is ticking. Mexico’s new mobile phone registration program requires all active cell phone lines to be linked to a verified identity by the end of June. While the initiative has been promoted as a tool to combat fraud, extortion, and other crimes committed using anonymous phone lines, it could also have practical consequences for millions of everyday users, including expats and foreign residents.
The registration requirement applies to all major carriers, including Telcel, AT&T, Movistar, Altán Redes, and the many virtual operators that use Altán’s network. Existing mobile lines must be registered by June 30, while new lines activated since January have been required to be linked to an identity as part of the registration process.
The measure is being presented by the federal government as a way to reduce anonymity and make it more difficult for criminals to use untraceable phone numbers for extortion and fraud. President Claudia Sheinbaum has urged users to complete the process and has emphasized that the government will not directly manage the database. Instead, telephone companies will be responsible for storing and safeguarding customer information. Authorities would only be able to request access to the data as part of a formal investigation, such as locating missing persons or investigating criminal activity.
One of the biggest concerns for users is what happens if they do nothing.
The Telecommunications Regulatory Commission (CRT) has warned that unregistered lines could face service restrictions. According to current guidance, users who fail to register may lose access to SMS messaging and cellular data services. While many applications would still function when connected to Wi-Fi, services that rely on text message verification could become inaccessible.
There is, however, still some uncertainty about exactly how enforcement will be handled. President Sheinbaum recently stated that the government would issue a report on registration progress and clarify whether restrictions will begin as scheduled or whether additional time may be granted. She stopped short of confirming immediate mass suspensions, emphasizing that the government’s goal is not to disrupt service for citizens.
As of now, no extension has been officially announced, and the June 30 deadline remains in effect. While there has been speculation that authorities could allow a grace period or phased enforcement due to the large number of unregistered lines, users should not assume an extension is coming. Government officials continue to encourage customers to complete the registration process as soon as possible to avoid potential disruptions.
The impact could go well beyond making phone calls.
Mexico’s largest banks are already warning customers that unregistered phone lines may interfere with important security features used for online banking.
BBVA says that text message authentication is used for certain administrative and security processes, including registering a new device on the bank’s mobile app. If a customer changes phones or needs to reinstall the application, the bank may send a verification code by SMS or place an automated call. Without access to those messages, customers could have difficulty completing the registration process.
Banamex issued a similar warning, noting that many of its security procedures rely on SMS verification, including password recovery and account authentication. The issue is significant because most banking customers now manage their finances digitally. According to the banks, roughly 80 percent of BBVA’s 34 million customers and 77 percent of Banamex customers use digital banking services.
The registration process itself varies by carrier, but generally requires official identification. Mexican citizens typically use their CURP along with an official ID such as an INE card or passport. Foreign residents should contact their provider directly to determine what documentation is required. Registration can usually be completed online through the carrier’s official portal or in person at a customer service center.
Government officials have repeatedly pushed back against claims that the registry is intended for surveillance. Authorities maintain that telephone companies, not the federal government, will hold the registration data and that access will only be granted through formal legal channels when required for investigations.
According to figures released by the federal government, approximately half of Mexico’s active mobile lines have been registered so far. That means millions of users still need to complete the process before the deadline.
As the deadline approaches, consumer advocates are also warning users to be cautious of scams. Since many providers are contacting customers by text message, criminals may attempt to send fake registration links designed to steal personal information. Users should only register through official carrier websites, mobile apps, or authorized service centers.
Whether the program ultimately succeeds in reducing extortion and other crimes remains to be seen. What is clear is that millions of people who rely on their phones for banking, authentication codes, messaging, and everyday communication should take steps now to ensure their line is properly registered before any restrictions take effect.
