Deadline for Linking Your Cell Phone to the CURP in 2026

Web Editor

December 19, 2025

two women standing in front of a blue background with a cell phone in their hand and a man in a whit

Introduction

Starting in January, a new process will commence to ensure that all mobile telephony lines are associated with an individual or legal entity. Failure to comply with this requirement will result in the suspension of the phone number, allowing only emergency calls.

Key Players and Relevance

The Mexican social security system, known as the “Curp” (Registro Universal de Contribuyentes Poblacionales), is a crucial identification tool for Mexican citizens. It aims to provide a unique identifier for every individual, ensuring proper access to social services and streamlining administrative processes. Telcel and AT&T, two major telecommunications companies in Mexico, have announced the deadline for linking mobile phone numbers to Curp.

Who are Telcel and AT&T?

Telcel, operated by America Movil, is the largest mobile network operator in Mexico. AT&T Mexico, a subsidiary of AT&T Inc., is another significant player in the country’s telecommunications market.

The New Process and Its Implications

The new process aims to strengthen the link between telecommunication services and individual identification, enhancing security and preventing fraud. By associating each mobile phone number with a Curp, authorities can better monitor and regulate telecommunications usage.

What happens if you don’t link your phone number to Curp?

  • Your mobile phone number will be suspended.
  • Only emergency calls can be made from the suspended number.

How to Link Your Cell Phone Number to Curp

To link your mobile phone number to Curp, follow these steps:

  1. Obtain your Curp: If you don’t have your Curp, visit the Mexican Social Security Institute (IMSS) website or a local IMSS office to get your unique identifier.
  2. Contact your telecommunications provider: Reach out to Telcel or AT&T and provide them with your Curp. They will guide you through the linking process.
  3. Confirm the link: Once your Curp is associated with your mobile number, you should receive a confirmation message from your telecommunications provider.

Key Questions and Answers

  • What is Curp? Curp, or the Universal Registry of Taxpayers with Population, is a unique identifier for Mexican citizens that helps access social services and streamline administrative processes.
  • Why is linking my phone number to Curp important? Linking your mobile number to Curp ensures better security, prevents fraud, and helps authorities monitor telecommunications usage.
  • What happens if I don’t link my phone number to Curp by the deadline? Your mobile phone number will be suspended, and you’ll only be able to make emergency calls.
  • How do I link my phone number to Curp? Obtain your Curp from the IMSS, contact your telecommunications provider (Telcel or AT&T), and follow their instructions to complete the linking process.

Conclusion

The new deadline for linking mobile phone numbers to Curp in 2026 aims to improve security and regulation within Mexico’s telecommunications sector. By understanding the process and its implications, you can ensure a smooth transition and avoid any disruptions in your mobile services.