National Mobile Phone User Registry 2026: Complete Guide and Key Dates to Avoid Being Cut Off

This is no longer a rumour or a “maybe”. If you’ve heard talk about the National Mobile Phone User Registry in recent months and thought it was just another boring process that no one actually checks, let me tell you: you better change your mind, and fast. There’s now a date set, and 30 June is going to be a game-changer for how we use our mobile phones in Mexico. Whether you’re on a postpaid plan or someone who tops up every week, if you’re not in the registry, your line will stop working. No two ways about it.

What exactly is the National Mobile Phone User Registry?

Let’s set the scene. Until a year ago, buying a SIM card was as easy as ordering a kopi at a hawker centre. You’d walk into a convenience store, they’d hand you a SIM without asking too many questions, and that was it. That created a massive problem: thousands of lines with no identified owner, used for extortion, virtual kidnappings, or just to switch carriers whenever they felt like it. The national mobile phone user registry is the authorities’ response to bring order to the chaos. Essentially, it’s a database linking every phone number — yes, both postpaid and prepaid — to a CURP (Mexico’s national ID number). The idea is to eliminate “ghost” lines. And while things moved slowly at first, the process has been ramped up in recent months more than many expected.

What’s the situation? The numbers that matter

To give you an idea, just a few weeks ago it was estimated that only about 14% of users were registered. That’s roughly 22 million lines already sorted. But that means there are still tens of millions of numbers hanging by a thread. And government offices have made it clear: no more extensions. If you’re not in the registry before 30 June, your number will be blocked, whether you’re with Telcel, Movistar, AT&T, or any other provider. So don’t pretend you didn’t see the notice, because when you lose your signal right in the middle of a public holiday, you’ll remember this guide.

Your survival guide: How to use the national mobile phone user registry

I’ll be honest: the first time I tried to do this, I also felt like giving up. The website sometimes gets overloaded, your details don’t match, or you just don’t know where to start. But after several calls and patiently helping more than a few friends, I’ve figured out the definitive way to do it. Here’s a step-by-step guide so you don’t run into trouble.

• Get your CURP and a valid ID: Yes, it sounds obvious, but many people trip up because the CURP they remember doesn’t match the one on their national ID card. Get your latest CURP from the RENAPO (National Population Registry) website; don’t rely on the one you got back in 2015.
• Go to the IFT (Federal Telecommunications Institute) portal or your carrier’s website: Most companies already have a microsite for this. If you’re on a postpaid plan, you might even be able to do it via their app. Prepaid users need to pay the most attention here.
• Fill out the form carefully: You’ll be asked for your number, the exact name as it appears on your ID, and your CURP. Double-check every letter. An error in your birthdate or a misplaced accent can mark you as “unregistered”.
• Confirm with the SMS code: You’ll receive a text message. Enter that code into the system. If it doesn’t come through, wait a few minutes or check that you have credit. Yes, sometimes you need credit to receive the SMS.
• Save the acknowledgment: Once you finish, you’ll get a reference number. Take a screenshot, print it out, or write it on a Post-it note. That little piece of information is your proof that you did your part.

Review of the experience: How easy or difficult is the process?

If you’re looking for an honest national mobile phone user registry review, here it is: it’s a lottery. For some, it takes five minutes. For others, it’s a headache lasting several weeks. The most common complaint is that the systems aren’t well synchronised. Many people have told me they tried to register, the system said “data doesn’t match”, they went to their carrier, and the carrier told them everything was fine. The reality is that the national mobile phone user registry still has some technical glitches. But that’s no excuse. If you get an error, the recommendation is to go directly to your carrier’s customer service centre. There, with your national ID in hand, they’ll sort it out for you. It’s a hassle, yes, but it’s better to lose an afternoon at the mall than to be disconnected come July.

The dates are set in stone

Officials have been unequivocal: it’s now official, all numbers not linked to their CURP before 30 June will be blocked. This started in January as a “voluntary regularisation” phase, but now we’re in the final stretch. The difference is that there will be no more exceptions now. Carriers are obligated to cut off the signal. And this includes both postpaid and prepaid users. It was initially said that this was only for new numbers, but that’s no longer the case. The goal is to clean up the entire database.

In my neighbourhood, the talk is constant: “Have you registered yet?”. And those who have left it until the last minute are now scrambling. If you don’t want to be one of them, you know what to do. Don’t put off until tomorrow what you can do today, because the closer we get to the deadline, the more overloaded the websites and queues will be.

Now, if you’re lost and don’t even know where to start, any friend can help you out. The process is simpler than it seems, but it does require you to pay attention. So get your national ID, find your CURP, and get it done. Your line will thank you for it.