Link Your Mobile Line to CURP in 2026
Mexico has passed 100 million mobile lines linked to their owners’ identities. As of November 2, 2026, the Comisión Reguladora de Telecomunicaciones (CRT) counted 100,518,000 linked lines, or 83.3% of the roughly 120 million expected to be registered by the end of the year. The requirement applies to prepaid lines. If you are on a postpaid plan, your carrier recorded your ID when you signed the contract, so you do not need to act. If you have a prepaid line that is not linked yet, this guide explains what to do, when, and what happens if you miss the date.
The CRT says linking each line to an official ID is meant to reduce anonymity and make it easier for authorities to investigate crimes such as fraud and extortion. Mexico joins at least 166 countries that already link mobile lines to an official identification. For the policy background, see our cell phone registry overview.
Deadlines by last digit
The official calendar depends on the last digit of your phone number:
| Last digit | Deadline |
|---|---|
| 0 | August 15, 2026 |
| 1 | August 31, 2026 |
| 2 | September 15, 2026 |
| 3 | September 30, 2026 |
| 4 | October 15, 2026 |
| 5 | October 31, 2026 |
| 6 | November 15, 2026 |
| 7 | November 30, 2026 |
| 8 | December 15, 2026 |
| 9 | December 31, 2026 |
You do not have to wait for your turn. You can link your line at any time, and it is safer to do it before your date.
These dates come from an extension. The original calendar ended on June 30, 2026. At its plenary session on June 25, the CRT unanimously approved a 184-day extension, published in the Diario Oficial de la Federación on June 30, 2026 (agreement P/CRT/EXT/25062026/084).
If your line is suspended
If your deadline passes and you have not registered, you have 72 hours. If you are still unlinked when that window closes, your carrier suspends the service. During the suspension you cannot make or receive regular calls, send SMS, or browse with mobile data. Calls to emergency numbers, contact with your carrier, and the earthquake early-warning alert stay active.
Before each deadline, your carrier must send SMS notices: twice a week, and daily during the seven days before your date.
A suspended line is not cancelled. Service returns once you complete the registration on your carrier’s platform or at one of its service centers. According to the CRT, this can be done at any time, requires no balance, and uses no data, so you do not need to top up first. Some users have resisted the rollout, and our controversy explainer covers the debate.
How to link or check your line
To link your line, you need your phone number, a valid official ID, and your CURP. If you do not have a biometric CURP yet, see our biometric CURP guide first. You can link your line in two ways:
- Online: sign in to your carrier’s digital platform, enter your line number, and follow the steps to register your ID and CURP.
- In person: go to one of your carrier’s service centers with your ID and your CURP, printed or on your phone.
The exact steps vary by carrier, so check your operator’s instructions before you start.
To check whether a line is already linked, you can use the CRT’s consultation portal, portal.crt.gob.mx. Select your carrier, and you will be redirected to its site. Enter your CURP and complete the captcha. Some carriers also ask for an official ID. If your number appears in the list, it is linked. You can also check in your carrier’s app or site.
Frequently asked questions
Do I need a balance to link or reactivate my line?
No. According to the CRT, the process requires no balance and uses no data.
What if I am on a postpaid plan?
You do not need to do anything. Your ID was recorded when you signed up.
Does the government do the linking?
No. Phone companies do it, and they collect and store the information.
Do I still need to link if I already have a biometric CURP?
Yes. Your CURP is the identifier used to link the line, but having one does not replace the process. If you do not have a biometric CURP yet, see our biometric CURP guide. For background on the policy, read our cell phone registry overview and controversy explainer.
Next steps
Check your last digit, link your line before your date, and if it is already suspended, reactivate it with the same process. If you have questions about your immigration or property situation in Mexico, Lorad’s lawyers can advise you through our legal services in Mexico.