IMEI Blocking - How It Works and When You Should Use It

If you’ve just lost your phone or fallen victim to theft, you should immediately discover the power hidden in your IMEI number. In this article, we’ll take a closer look at how to use the IMEI number in such a situation. We’ll also explain what IMEI blocking is, how it works exactly, where to check if a device has been added to the blacklist, and when it’s worth using this option. You’ll also find out how effective this method is and what you need to watch out for.

What is an IMEI number?

Let’s start with the basics. The IMEI, or International Mobile Equipment Identity, is a unique 15-digit number assigned to every mobile device that can connect to a cellular network- such as a smartphone or tablet. Think of it as a digital fingerprint for your device, as no two devices in the world should share the same IMEI. This makes it an ideal tool for identifying and managing mobile devices on a global scale.

How to find the IMEI number on your device?

There are several ways to check your IMEI number, and most of them take just a few seconds. The quickest method is simply entering the USSD code *#06# and this action will instantly display the number (or numbers, if your device supports Dual SIM, as each SIM card has a separate IMEI) on your screen.

You can also go into your phone’s settings, navigate to the general information section, and you’ll easily find the IMEI number there.

Some devices have the IMEI printed on the back of the phone, but this usually applies to models with removable batteries, meaning mostly older devices. You can also find the IMEI on the SIM tray.

If you still have the original packaging, the IMEI number is also printed there, most often located on the bottom or one of the sides of the box.

What is IMEI blocking?

Now that you know what an IMEI number is and how to find it, let’s explain one of the most important features you can use with this number. If you’re in a critical situation where your phone has been lost or stolen, you should report it to the police and to your mobile network operator so they can block the IMEI.

IMEI blocking means that, after reporting such a case, the device is added to a so-called blacklist. In practice, this means that the phone can still be turned on, take photos, or work as a for example music player, but it won’t connect to any mobile network. So, a potential finder or thief won’t be able to make calls, send text messages, or use mobile internet. Device becomes useless, and you gain a bit of peace of mind knowing that no one will be making calls or sending messages in your name.

How to Report

If you find yourself in such an unfortunate situation, the first and most important step is to have proof that you are the rightful owner of the device. A personal ID alone may not be enough, in many cases, you’ll also need to present a proof of purchase, such as a receipt or an invoice. In some countries, that might be sufficient, but many mobile operators may also require your device’s IMEI number.

 

If you still have the original packaging, check the label with the IMEI number- it’s usually located on the bottom or side of the box. Some sellers even include the IMEI on the invoice, so it’s worth checking your proof of purchase for this information.

If you're reading this article in advance (hopefully, you'll never need to use it!), make sure to locate and save your IMEI number somewhere safe, for example, in the cloud, an online note, or as a photo sent to your own email.

1. Contact your mobile network operator

You can report the situation in several ways:

·         By phone – calling your operator’s customer service line

·         In person – by visiting a store or service center

·         Online – through your customer account panel, if this option is available

During the process, you’ll be asked to provide your account details and to verify your identity, usually with a personal ID. If everything checks out, the operator should promptly add your device to the blacklist, blocking its access to mobile networks.

2. Report the loss or theft to the police

Next, contact your local police station or non-emergency helpline and file an official report of the loss or theft. This step is crucial, as it not only formalizes the situation but also offers several important benefits:

·         You will receive a case number and official confirmation of the report

·         It increases the chances of recovering your phone, as in some cases the police may be able to track or locate the device using the IMEI.

·         If an honest person finds and turns in the phone to the authorities, your report will make it easier to prove ownership and get it back.

How to Check if Your Device Is on the Blacklist

If you’ve reported your lost or stolen device to the police and your mobile operator, but still have doubts whether it was actually blocked, the good news is- you can easily verify it without even leaving your home!

All you need to do is use an online IMEI check tool that allows you to generate a complete report. This report will confirm whether your device has been blocked and added to the IMEI blacklist. Additionally, you can also check:

·         Country of origin

·         Exact model and brand

·         Serial number

·         Lock status (e.g., SIM-lock, iCloud lock)

·         Warranty and manufacturer information

·         Activation date

·         Operating system details

·         Battery information

 

And many more technical details- some are available for free, while more advanced data may require a small fee.

Conclusion

Losing your phone, a device you likely use constantly throughout the day or having it stolen is undoubtedly a very stressful and frustrating experience. Fortunately, you now have the knowledge of what to do and how to act quickly, and that can make a big difference. The IMEI number is not just a random string of digits- it’s a powerful tool that helps you protect your data, block unauthorized access, and make the device completely useless to a thief or anyone who finds it.

By understanding how IMEI blocking works, how to report a lost or stolen device and how to check its status, you’ve gained much more control over the situation. Whether you’re currently dealing with this unfortunate problem or simply preparing for the future, always remember the value and benefits that your IMEI number can offer.