How to check the real IMEI, the simplest

What is IMEI? Checking the IMEI and distinguishing the real and fake IMEI is one of the quite effective ways for you to identify whether a product is genuine or a floating product, of unknown origin, even an illegal one. However, how to realize, what is a real IMEI, a fake IMEI is something that certainly not everyone knows.

How to check IMEI, check IMEI of Windows Phone

How to check the IMEI number on Android phones

How to check the IMEI number on an iPhone

The IMEI code is a "passport", which identifies a product or a mobile device. There are never two identical IMEIs for the same phone, so checking a real - fake IMEI is one of the most important and effective ways to identify that device.

Identify real or fake IMEI?

As we know, the structure of an IMEI consists of 4 parts ( IMEI = TAC + FAC + SNR + CD ). Inside:

  • TAC, FAC, SNR : The components are identified, calculated and used to identify the origin and information about that device.
  • CD : The last number of the 15 IMEI numbers - also the only way to rely on it and determine whether the existing IMEI range is real or fake, based on a fairly simple formula.

The formula is determined as follows:

  • Step 1 : You double the value of all the numbers in the IMEI range in odd positions (1st, 3rd, 5th ...) in order from right to left.
  • Step 2 : Add all these duplicated values ​​with the numbers in the remaining even position of the IMEI.
  • Step 3 : Take the total value divided by 10 (that is, the total value must be a number divided by 10), the result is the CD number.

ATTENTION:

  • If the result is divisible by 10, the CD number will be "0".
  • If the sum is not divisible by 10 , the CD number will be the difference between the divisor of 10 greater and closest to the result obtained.

For example:

After step 3, the total value found is:

  • 10, 20, 40, 70, ..: the CD number will be: 0.
  • 34, 56, 77, 87, ...: the number of CDs will be: 40 - 34 = 6, 60 - 56 = 4, 80 - 77 = 3, 90 - 87 = 3, ...

Specifically:

We have an IMEI range as follows: 49015420323751 X (490154-20-323751-X) -> Find X ?

IMEI 4 9 0 first 5 4 2 0 3 2 3 7 5 first X
Duplicate the value   18   2   8   0   4   14   2  
Add up the sum 4 1 + 8 0 2 5 8 2 0 3 4 3 1 + 4 5 2  

After step 3, our sum is:

4 + 1 + 8 + 0 + 2 + 5 + 8 + 2 + 0 + 3 + 4 + 3 + 1 + 4 + 5 + 2 = 42 -> not divisible by 10.

The divisor for 10, bigger and closest to 42, is 50 -> CD number = 50 - 42 = 8 .

So X = 8 and our complete IMEI code is 49015420323751 8 .

With this calculation formula, you can easily check whether the last number (CD number) of an IMEI code matches or not, is it standard with the remaining 14 numbers in the sequence?

  • If yes, that is the standard IMEI .
  • Otherwise, the IMEI code has been tampered with .

There are many devices, whether genuine, genuine, but faulty, used, or for some reason, their IMEI code has been changed to hide their true information. And here is how to help you find the "error" in that IMEI code.

I wish you successful implementation!

Sign up and earn $1000 a day ⋙

Leave a Comment

Androids new Find Nearby feature helps detect unwanted Bluetooth tracking devices

Androids new Find Nearby feature helps detect unwanted Bluetooth tracking devices

Google just announced a new Android Find Nearby feature that detects unregistered Bluetooth devices that are tracking your location and helps you find their location.

How to set ringtone on Android

How to set ringtone on Android

Android phones already have a ringtone cutter built into the system so you can cut the ringtone you like, without having to cut the ringtone on your computer and then transfer it to your phone.

8 Ways to Quickly Transfer Photos from iPhone to iPhone

8 Ways to Quickly Transfer Photos from iPhone to iPhone

There are many different ways to transfer photos between phones. Here are 8 ways to transfer photos from iPhone to iPhone that you should definitely try at least once in your life.

10 Best Weather Forecast Apps for Android

10 Best Weather Forecast Apps for Android

There are hundreds of weather apps out there, but only a handful of good ones. That's why Quantrimang.com has scoured the web to bring you the top picks, no matter what your needs are.

How to turn off location sharing on Android

How to turn off location sharing on Android

Google has now made it easier to find and turn off the Location Sharing option by adding a toggle to the basic Android settings.

How to use Clean Up feature on old iPhone

How to use Clean Up feature on old iPhone

While Apple's Clean Up tool is limited to the iPhone 15 Pro and later, there are apps you can use to remove distracting elements from images on older iPhones.

How to change app arrangement style on Android 12

How to change app arrangement style on Android 12

One of the new customization features coming in Android 12 is the ability to change the arrangement of apps more easily than in previous versions of Android.

How to delete browsing history on Android phone

How to delete browsing history on Android phone

Current web browsers on computers or phones all have the option to delete browsing history, such as deleting browsing history on Chrome, deleting browsing history on Firefox,...

5 Best Alternatives to Android Auto

5 Best Alternatives to Android Auto

Check out the best Android Auto alternatives.

How to call multiple people at once on Android

How to call multiple people at once on Android

In the article below, Quantrimang will guide you how to call multiple people at the same time on Android, how to add people to the call and how to join a multi-way call.

How to Zoom in on Text When Typing on iPhone

How to Zoom in on Text When Typing on iPhone

iOS 18 adds a setting to zoom in on text while typing in real time so you can see more clearly the text you're editing or typing.

How to Set Up iPhone Mirroring to Mirror Your iPhone Screen to Your Mac

How to Set Up iPhone Mirroring to Mirror Your iPhone Screen to Your Mac

iPhone Mirroring is one of the standout features of macOS Sequoia and lets you access your iPhone and its notifications from your Mac.

7 iPhone 16 Pro Features That Android Flagships Dont Have Yet

7 iPhone 16 Pro Features That Android Flagships Dont Have Yet

While the iPhone 16 Pro is a modest upgrade over its predecessor, it offers a lot of new features and improvements that you won't find in the latest flagship Android phones.

Summary of ways to turn off iPhone in iOS 18

Summary of ways to turn off iPhone in iOS 18

If you just got your first iPhone, you probably don't know how to turn it off. You may have pressed the side button but didn't see the shutdown screen. But don't worry, it's easy! And there are many ways to turn off your iPhone.

Why does iPhone sometimes try to make you answer calls?

Why does iPhone sometimes try to make you answer calls?

Have you ever gotten a call from someone you don't want to talk to right now, stared at the screen and wondered why the Decline button always disappears at the worst possible moment?