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ReiBoot - No.1 Free iOS System Repair Software
Fix 150+ iOS Issues without Data Loss & Safely iOS 27 Upgrade/Downgrade
ReiBoot: No.1 iOS Repair Tool
Fix 150+ iOS Issues, No Data Loss
Every iPhone, including the iPhone 18 series and earlier models, has a unique number called an IMEI. IMEI stands for International Mobile Equipment Identity, and it uniquely identifies your device on cellular networks. You can find your iPhone IMEI on the original packaging, in Settings > General > About, or by dialing *#06# from the Phone app keypad.
Sometimes, an iPhone may show an IMEI-related problem, such as a missing or invalid IMEI number, which can affect cellular service. If this happens, you may need to learn how to troubleshoot an IMEI issue on iPhone through safe software checks, carrier support, or Apple service options. Do not attempt to change an IMEI number, as it is a device-specific identifier.
The following guide explains how to check the IMEI number on your iPhone, including iPhone 18 models, identify common IMEI-related issues, check whether an IMEI may be blacklisted, and understand the appropriate next steps.
If your iPhone, including an iPhone 18 series model or an earlier compatible device, has a software-related issue that may affect cellular features or IMEI information, you may consider Tenorshare ReiBoot as an iOS system repair option. ReiBoot is designed to help address supported iOS system problems, such as update failures, boot loops, recovery mode issues, and other abnormal device behavior, in just a few clicks. It does not change or rewrite an IMEI number; if the IMEI is missing, invalid, or blacklisted, contact Apple or your carrier for appropriate support.
Now that you know a little bit about the software, you may want to know what it can repair for you. Well, the list is quite long, however, it is given below for your reference. If you are facing any of the issues mentioned below, ReiBoot is all that you need to get around the issue on your device.
Coming back to your issue, ReiBoot is able to fix the IMEI issue you have on your iPhone in a few clicks. Its feature called fix all lets you fix almost all kind of issues on your iOS based device in one go and the following should teach you how to do it.
Step 1: Download and run the software on your computer. Connect your iPhone with the IMEI issue to your computer using a suitable cable and click on 'Start' in the software.
Step 2: On the following screen, click on the button that says 'Standard Repair'. You will be asked to download a firmware package. Click on the 'Download' button to do so.
Step 3: When the software has downloaded a firmware for your device, it will start repairing your device. As you can see, it's pretty easy to fix an iPhone with IMEI issue using the ReiBoot software.
If your iPhone's IMEI number has gone invalid or has been blacklisted, you may first want to check it on the online IMEI database to see if that is indeed the case. The following is how you do it.
There are a number of websites that let you check if your IMEI number has been blacklisted. We use one of those websites to demonstrate the procedure for you.
Open a web browser on your computer and head over to the IMEI Info website. Enter in your iPhone's IMEI number and click on Check. On the screen that follows, click on Phone Blacklist and you will be able to know if your IMEI is indeed blacklisted.
If you found that your iPhone's IMEI has indeed been blacklisted, the following is what you can do about it.
Ask the Seller for a Refund
If you have bought your iPhone from a genuine seller, they should be able to issue you a refund or a replacement. Most trusted websites will happily do it for you, however, if you have bought the phone from a not so genuine seller, they may or may not issue you a refund and/or replacement.
Put in an IMEI Clean Request
In some events, it is possible to get your IMEI number cleaned. To do that, you need to put in a request to your carrier letting them know your exact situation. They might be able to whitelist your IMEI number.
Use as an Entertainment System
If the above two solutions don't work for you, you can use the phone as an entertainment device for yourself. It can still play media and games for you.
We hope the above guide has been successful in teaching how to repair IMEI iPhone via software. There are many ways to fix the IMEI issue including using ReiBoot and you should definitely have success with at least one method in the above guide.
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By Sophie Green
2026-11-06 / iPhone Fix