What is an IMEI number, and how can you find it?

What is an IMEI number?

The IMEI (International Mobile Equipment Identity) is a 15-digit code used to identify mobile devices. This number helps your phone connect to networks and stay secure.

No two devices share the same IMEI number. It's a one-of-a-kind identifier that distinguishes your phone from every other smartphone, tablet, and mobile device on the planet — this number plays a huge role in everything from fraud prevention to your phone's functionality.

Structure of an IMEI number

While it may look like a random sequence of digits, every number in the IMEI has a meaning. The first eight digits of the IMEI are called the Type Allocation Code (TAC). This section reveals the manufacturer and device model. Whether your phone is an iPhone, a Samsung Galaxy, or a nostalgic Nokia, the TAC is the code that lets you know who made it.

The next six digits are the serial number (SNR), making your phone unique within a specific TAC group. These numbers ensure that no two devices will ever share the same IMEI, making it as unique as your Social Security Number. It sets your phone apart from the millions of others rolling off the same assembly line.

Finally, the last digit in the IMEI sequence is the check digit (CD). This digit is essential because it’s calculated using a mathematical formula to ensure the entire IMEI is valid.

What is an IMEI number used for?

The IMEI number is used for device identification, blocking stolen devices, and providing technical support and warranty services. Understanding its uses can help you maximize your phone's security and support system.

Device identification

Mobile networks and manufacturers use the IMEI number to identify and authenticate your device. The IMEI is necessary for ensuring that your phone is recognized and registered on the network and can be tracked or managed by service providers when needed.

Blocking stolen devices

If your phone is lost or stolen, you should report its IMEI number to your carrier so they can block the device. Even if the thief swaps SIM cards, the phone will remain unusable on any participating network.

Additionally, many countries use international databases to share blocklisted IMEIs, making it more difficult for stolen devices to be sold or reused in other regions. The blocklist helps reduce the chances of the phone being used for fraudulent purposes or resold.

In some cases, law enforcement can also use the IMEI to track and recover stolen devices, making it crucial to securing your phone against theft.

Technical support and warranty

The IMEI number is also crucial for technical support and warranty services. When you contact your phone's manufacturer or a service center for assistance, they often request your IMEI number to verify the model, confirm warranty status, and check for any known issues or recalls.

Personal data

The IMEI isn't just a technical identifier — it becomes personal data when linked to your identity through device activation or purchase. Law enforcement agencies frequently rely on IMEI numbers to track devices during criminal investigations. However, having personal data tied to IMEI can also pose privacy concerns, as it can contribute to creating detailed user profiles.

Legal regulations

To maintain the integrity of the IMEI security system, tampering with an IMEI is illegal in many jurisdictions. This includes IMEI cloning, where one device's IMEI is copied onto another to bypass blocklists, a practice that can lead to criminal charges. Similarly, altering or modifying an IMEI number is considered a serious offense, as it prevents stolen devices from being used illicitly. Countries worldwide enforce strict regulations, imposing heavy fines and penalties to deter such activities and ensure the reliability of the IMEI system.

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How can you find your IMEI number?

Every device has a unique IMEI number. However, the method for locating it varies by brand, type, and model. In most cases, it's a simple trip through your phone's settings. For others, it might involve some detective work on the hardware itself.

Using dial code *#06#

One of the simplest ways to check your IMEI number is by using a special keypad code — it's a great method when you need it quickly. It works across most smartphones, from Android to iPhone:

1. Open the “Phone” app on your device.

2. Dial *#06# precisely as shown (no need to press the call button).

3. The IMEI number will instantly appear on your screen. If you have a dual-SIM device, it may display more than one IMEI.

How to find the IMEI on an iPhone

1. Open the “Settings” app.

   

2. Scroll down and tap “General.”

   

3. Tap “About” at the top of the list.

   

4. Scroll down until you see “IMEI.”

   

5. Tap and hold the IMEI number to copy it or take a screenshot.

How to find the IMEI on an Android

1. Open the “Settings” app.

   

2. Scroll down and tap “About phone” (or similar options like “System” > “About device,” depending on the manufacturer).

   

3. Look for “Status” or “IMEI information.”

   

4. Your IMEI number will be displayed here. Dual-SIM devices will show two IMEI numbers.

Physical device and packaging

Sometimes, the IMEI number is in plain sight, either on the device itself or its original packaging. To find it, check the SIM tray by gently removing it because the IMEI may be inscribed on its surface.

For some phones, especially older models, the IMEI can be printed on the back or near the bottom of the device. If the phone has a removable battery, look underneath it on a small sticker.

Lastly, if you still have the original packaging, the IMEI number is often printed on a label alongside the barcode.

Alternative methods to retrieve your IMEI number

Sometimes, the usual methods for finding your IMEI aren't available. Maybe your phone is lost, stolen, or simply inaccessible. Fortunately, there are still a few other methods for retrieving your IMEI.

Using Google's “Find my device” to get the IMEI 

Google's “Find my device” is a lifesaver when your phone goes missing. Besides locating your device on a map, it also offers the option to view your IMEI number, but only if the feature was enabled beforehand. Here's how to set it up for future use and access your IMEI if needed.

Setting up Google’s “Find my device”

1. Open the Settings app on your Android device.

2. Navigate to “Security & privacy or Google settings” (varies by brand).

3. Tap “Find my device” (or “Security” > “Find my device” in older versions).

4. Make sure the toggle for “Find my device” is turned on.

5. Ensure your device is linked to your Google account and has location services enabled.

Retrieving the IMEI via “Find my device”

1. Visit Google’s “Find my device” website.

2. Log in with the same Google account linked to your phone.

3. Select your device from the list of connected devices.

4. Look for the IMEI number displayed in the device information.

Using the Apple ID website

Apple users can access their device's IMEI remotely by logging into their Apple ID account online:

1. Go to the Apple ID website.

2. Sign in using your Apple ID credentials.

3. Scroll down to the “Devices” section.

4. Click on the specific device you want to view.

5. The IMEI number and other device details, such as model and serial number, will be listed.

What's the difference between IMEI and IMEISV?

While the IMEI is the standard hardware identifier, another essential code is the IMEISV (International Mobile Equipment Identity — Software Version). This code provides additional information about the device's software version — the final two digits, known as the Software Version Number (SVN), identify the device's software or firmware version.

IMEISV is important because the SVN helps distinguish between devices that may appear identical but are running different firmware versions, which helps troubleshoot and ensure compatibility. Also, the IMEISV's structure ensures that critical identifiers like TAC and SNR resist unauthorized modification, thereby protecting the device's integrity.

Why should you keep your IMEI private?

The IMEI is a permanent identifier tied to your phone — if someone gets hold of your IMEI, they could report your device as stolen, even if it's not. This report could get your phone blocklisted by network providers, which means you would lose access to cellular services.

Another risk associated with sharing your IMEI is cloning. When malicious actors clone your IMEI onto another device, they essentially steal your phone's identity and could bypass network blocklists, allowing a stolen device to still work on mobile networks. Even worse, the cloned device could make calls, send messages, or access sensitive data, all while appearing to be your phone. This kind of activity can create confusion and lead to serious legal issues if the cloned device is used for fraudulent or illegal purposes.

It's crucial to follow a few best practices to keep your IMEI safe. First, avoid sharing your IMEI number. Never post it on social media, forums, or websites. Doing so makes it an easy target for those with malicious intent.

However, while keeping your IMEI private is important, it's equally essential to have it recorded somewhere safe. If your phone is lost or stolen, you'll need the IMEI number to report it to your carrier or law enforcement. Having it written down lets you quickly provide the necessary information to help track or disable your device. Just ensure the place where you store it is secure and accessible only to you so it doesn't fall into the wrong hands.