What is an IMEI number and how is it used?

Learn more about what an IMEI number is, what it’s used for, and how to identify your phone's IMEI number.

What is an IMEI number?

The IMEI number is an essential feature of every mobile device—it's a unique identifier that plays a critical role in various aspects of your phone's functionality and security.

So, what does IMEI stand for? IMEI is the acronym for International Mobile Equipment Identity. As its name suggests, it's an identifier that distinguishes each mobile device across the globe. It consists of 15- to 17-digit numbers and is unique to each device. And, just like fingerprints that are unique for each person and used to identify that person, the IMEI is used to identify valid devices and can be used to stop a stolen phone from accessing a network.

woman looking at her mobile and smiling

What types of phones have IMEI numbers? 

All types of mobile phones, including smartphones, have an IMEI number. However, this number isn't limited to mobile phones; other mobile devices like tablets and smartwatches also have an IMEI number. You can easily check the IMEI number in iPhone or any other device using a few simple steps, as explained in this article.

How do I find my mobile phone's IMEI number?

You’ll be happy to hear that it’s simple and free to check your mobile phone’s IMEI number. For most mobile phones, you can look up the IMEI number by dialing *#06# on your mobile phone, and your IMEI number will be displayed on the screen. The number is also listed in your mobile phone settings. If you're an iPhone user, head to the About section in Settings. If you're an Android user, you can find it under Settings > About Phone > Status.  

How do I check my mobile phone's compatibility with a new carrier?

If you're planning to switch carriers and want to bring your own device, you can use your IMEI number to check your mobile phone's compatibility. Most carriers provide an IMEI unlock checker tool on their website. All you need to do is enter your IMEI number to check if your mobile phone is compatible with the new carrier. Remember that if the mobile phone is incompatible, you'll need to buy a new mobile phone and perhaps also do a trade-in for your old mobile phone.

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