Finding your MTN number on your phone

Your MTN phone number is stored in your SIM card and your phone's network settings. The fastest way to find it is to open your phone's settings, look for "About Phone" or "Phone Information", and search for a field labeled "My Phone Number", "Phone Number", or "Mobile Number". On some phones this appears when ready; on others you may need to scroll through several tabs.

If your settings don't show your number clearly, try opening the Phone app and looking at your own contact card — many phones automatically create one when you insert a SIM. You can also check your MTN bill or any welcome message MTN sent when you first activated the SIM; your number appears on both.

Key Takeaways

  • Your MTN number lives on your SIM card and appears in your phone's settings under "About Phone" or "Phone Information".
  • If settings don't show it, check your own contact card in the Phone app or look at your MTN bill or welcome SMS.
  • Dialing *100# on an MTN line displays your number on screen within seconds.
  • MTN customer service can confirm your number if you call from that SIM, though you may need to verify your identity first.
  • Your number stays the same as long as you keep the same SIM card active on the MTN network.

Using the USSD code to check your number

The quickest method on any MTN phone is to dial *100# and press call. This is a USSD code — a short instruction that MTN's network understands — and it triggers an when ready response. Within a few seconds, a popup or message will appear on your screen displaying your complete MTN phone number.

This method works on any phone that can make calls, including very basic phones without internet. You do not need to be connected to WiFi or mobile data. The code works only if you are on an MTN SIM; if you have switched networks or your SIM is inactive, the code may not respond or may show an error.

Checking through your MTN account online or in the app

If you have set up an MTN account through their website or mobile app, you can log in and view your phone number in your account settings or profile section. The exact location varies by country — MTN operates in over 20 countries in Africa and the Middle East — but it is usually labeled "My Number", "Account Details", or "SIM Information".

To use this method, you need to remember your login password. If you have forgotten it, you can reset it through the "Forgot Password" link on the MTN login page; MTN will send a reset link to the email address you registered. Once you are logged in, your number appears in your profile without needing to verify anything else.

Asking MTN customer service directly

You can call MTN customer service from your MTN phone and ask them to confirm your number. The customer service line varies by country — in some places it is 100, in others it is a longer number printed on your MTN bill or SIM card packaging. When you call, explain that you need to confirm your phone number.

Customer service may ask you to verify your identity by providing your name, the date you activated the SIM, or other account details. This is normal security practice. Once verified, they will read your number back to you. This method is slower than dialing *100# but works if you have lost access to your phone's settings or your SIM is not responding to the USSD code.

What to do if your number does not appear anywhere

If you cannot find your number through settings, the *100# code, or your account, your SIM may not be fully activated on the MTN network yet. New SIMs sometimes take a few hours to set up after you insert them. Wait a few hours, then try the *100# code again.

If your SIM has been inactive for a long time, MTN may have deactivated it. In this case, contact MTN customer service with your SIM card details — usually printed on the card itself — and ask them to reactivate it. Once reactivated, your original number should return to the SIM, though in some cases MTN may assign you a new number if the old one has been reassigned to another customer.

Why you might need your MTN number

You need your MTN number when setting up two-factor authentication for online accounts, registering with a bank or government service, or giving your contact information to someone. Many online services send a verification code to your phone number, so you need to know it to complete the setup.

You also need it if you are switching phones or SIM cards and want to make sure you are keeping the same number. Your number is tied to your SIM card, not your phone, so if you move your SIM to a different phone, the number moves with it. If you remove your SIM and do not use it for an extended period, MTN may eventually deactivate it and reassign the number to someone else.

Frequently Asked Questions

Does *100# work on every MTN phone?

It works on any phone that can make calls and is connected to the MTN network with an active SIM. It does not require internet, data, or a smartphone. If the code does not work, your SIM may not be activated yet or may have been deactivated due to inactivity.

What if I have multiple MTN SIMs?

Each SIM has its own unique number. If you dial *100# from one SIM, you see only that SIM's number. To find the number on a different SIM, insert it into your phone and dial *100# again, or check each SIM's settings separately.

Will my MTN number change if I switch to a different phone?

No. Your number is stored on the SIM card, not the phone. If you move your SIM to a new phone, the number stays the same. The number only changes if MTN deactivates your SIM due to long inactivity or if you request a new number from customer service.

Can I find my number if my phone is locked or broken?

If your phone is locked, you cannot access settings or dial codes. If it is broken, you can insert the SIM into another phone and use *100# or check settings on that phone. You can also call MTN customer service from any phone and provide your SIM details so they can tell you the number.

What if MTN says my SIM is not registered to me?

MTN may require you to register your SIM with your full name and identification number for security reasons. If your SIM is not registered, contact MTN customer service with your ID and proof of purchase, and they can register it for you. Once registered, you can access your account and confirm your number.