A du number check takes less than ten seconds once you know the right code, yet thousands of UAE residents get stuck every month trying to remember or find their own du mobile number. Whether you just activated a new SIM, switched phones, or simply need your number to register for an app or bank account, there is a fast and free way to pull it up on screen instantly.
This guide covers every reliable method to check du number in the UAE, from the fastest USSD code to backup options that work even without internet or app access.
| In This Guide You Will Learn The fastest du number check code and exactly how to dial it. How to check du number through the official du app and website. How a du number check by SMS works when you have no signal for USSD. How to find your du number directly in your phone settings. What to do if none of the usual methods respond. How a du balance check differs from a du number check, and the separate code it uses. |
Keep reading for the full step by step walkthrough, a method comparison table, and answers to the most common du number questions.
Table of Contents
1. What Is a Du Number Check
2. The Fastest Du Number Check Code
3. How to Check Du Number Through the App and Website
4. Du Number Check by SMS
5. Find Your Du Number in Phone Settings
6. Best Du Number Check Methods Compared
7. What to Do If Your Du Number Check Fails
8. Du Balance Check: A Related but Different Process
9. Frequently Asked Questions
1. What Is a Du Number Check
A du number check is defined as any method used to confirm the mobile number tied to a du SIM card, whether through a USSD code, the du app, SMS, or your device settings. It is one of the most searched telecom questions in the UAE, since du numbers are not always printed clearly on new SIM packs and many phones do not display the number automatically after activation.
du, officially Emirates Integrated Telecommunications Company, is one of two main mobile operators in the UAE alongside Etisalat. du numbers typically begin with 052, which helps distinguish them from Etisalat numbers starting with 050 or 056.
Why Du Numbers Are Easy to Forget
New residents and travelers often receive a du SIM as part of a visa or company onboarding package, and the number is rarely memorized right away. Even long term users can forget their number after a device change, since most phones only store the number if it was manually saved to the SIM contact card.
2. The Fastest Du Number Check Code
The quickest du number check code is *116#. Dialing this from an active du SIM displays your own number on screen within seconds, with no internet connection required.
Step by Step: Du Number Check Code *116#
- Open your phone’s dial pad, the same screen used to place a normal call.
- Type *116# exactly as shown, including both star and hash symbols.
- Press the call or send button to submit the code.
- Wait a few seconds for a pop up or flash message showing your du number on screen.
- Save the number to your contacts immediately so you do not need to repeat this step later.
| Pro Tip On a dual SIM phone, make sure the du line is selected as the active SIM for calls before dialing the code, or the USSD request may fail or return the wrong number. |
3. How to Check Du Number Through the App and Website
The du app and the official du website both display your number directly on your account dashboard once you are logged in, alongside your plan details, bill, and usage.
Step by Step: Du App Method
- Download and open the official du app from the App Store or Google Play if it is not already installed.
- Log in with your registered credentials or the OTP sent to your du line.
- Open the account or profile section of the app.
- Your du mobile number appears clearly on the dashboard alongside your plan and balance details.
Step by Step: Du Website Method
- Visit the official du website on any browser.
- Select the login option and sign in to your account.
- Open the My Account tab once you are signed in.
- Your registered du number is listed under your account details.
4. Du Number Check by SMS
A du number check by SMS is the best backup option when you have no mobile data and the USSD code is not responding for any reason. This method only needs a working SIM that can send a standard text message.
Step by Step: SMS Method
- Open your phone’s messaging app.
- Compose a new message and type the word NUMBER.
- Send the message to 1355.
- Wait for the reply SMS, which shows your registered du mobile number.
Standard carrier SMS rates may apply to this method depending on your plan, even though du does not charge extra for the number lookup itself.
5. Find Your Du Number in Phone Settings
Most smartphones store the SIM number locally once it has synced with the network, which makes your phone’s own settings menu a useful backup for a du number check.
On Android Phones
- Open Settings on your device.
- Tap About Phone or About Device.
- Select Status or SIM Status.
- Look for the field labeled My Phone Number or SIM Number.
On iPhone
- Open Settings on your device.
- Tap Phone.
- Select My Number near the top of the screen.
This method depends on the number being written into the SIM profile automatically, which does not always happen on every device, so treat it as a secondary check rather than the first method you try.
6. Best Du Number Check Methods Compared
Each method below reaches the same result, so the right choice depends on whether you have signal, data, or neither at the moment you need your number.
Du Number Check Comparison: Top Options at a Glance
| Method | What You Need | Best For | Cost | Speed Rating |
| USSD Code *116# | A du SIM with signal, no internet | Fastest offline check | Free | Instant |
| du App | du app installed and internet access | Checking alongside bills and usage | Free | Fast, under 30 seconds |
| SMS to 1355 | A working SIM that can send texts | Low signal or weak data areas | Standard SMS rates may apply | Fast, under 60 seconds |
| Phone Settings | Any Android or iPhone with the SIM inserted | Checking without dialing anything | Free | Instant |
| du Customer Service, 155 | Any phone, free within the UAE | When other methods fail | Free | A few minutes |
| Winner The USSD code *116# is the strongest overall choice for most users, since it works instantly without internet and needs nothing more than a working du SIM. Keep the du app installed as a backup for whenever you also need your balance, bill, or usage details. |
7. What to Do If Your Du Number Check Fails
If *116# shows nothing: confirm the du SIM is properly inserted and selected as the active line on a dual SIM phone, then try again with a stronger signal.
If the app will not log in: make sure you have a stable internet connection, since the app method depends on data or WiFi rather than the SIM network.
If the SMS to 1355 does not arrive: confirm the SIM can send standard text messages and that you typed NUMBER exactly, then wait a few minutes before retrying.
If nothing else works: call du customer service on 155 free from within the UAE, or +971 55 567 8155 from abroad or another network, and a representative can confirm your number after identity verification.
8. Du Balance Check: A Related but Different Process
A du number check and a du balance check are two separate tasks that use two different codes, and mixing them up is one of the most common points of confusion among du users. A du number check tells you your own mobile number, while a du balance check tells you how much credit or bill amount is left on your line.
Du Balance Check Code
The du balance check code is *135#. Dialing this from a du prepaid line opens a short self service menu, and selecting the balance inquiry option returns your current credit within seconds, usually by an on screen message or a follow up SMS.
Step by Step: Du Balance Check by USSD
- Open your phone’s dial pad and type *135#.
- Press the call or send button to open the du self service menu.
- Select the balance inquiry option from the menu that appears.
- Read your current balance from the on screen message or the SMS that follows.
Du Balance Check by SMS
Prepaid users can also check balance by composing a text message with the word BAL and sending it to 1355. Postpaid users can send BILL to the same number to receive current bill and balance details by SMS.
Du Balance Check for Postpaid and Online
Postpaid subscribers can also see their current balance and bill by logging into the du app or the du website, where it appears on the main account dashboard alongside usage details. This is the same login used for the du number check method described earlier in this guide.
| Pro Tip Keep both codes saved in your phone. *116# is for finding your own number, and *135# is for checking your balance. Since both start with a star and use similar formatting, it is easy to dial the wrong one by mistake. |
9. Frequently Asked Questions
What is the du number check code?
The du number check code is *116#. Dial it from your du SIM and your number appears on screen within seconds, with no internet connection needed.
How do I know my du number without an app?
Dial *116# on your du SIM for an instant on screen result, or send the word NUMBER by SMS to 1355 if you prefer a text based method. Both work without installing anything.
Does checking my du number cost anything?
No. Checking your number through *116#, phone settings, or the du app is free. Only the SMS method may carry a standard carrier text message charge depending on your plan.
Why does *116# sometimes not work?
This usually happens when the du SIM is not the active line on a dual SIM phone, when signal is weak, or when the SIM was very recently activated and has not yet fully registered on the network.
Can I check my du number online?
Yes. Log in to your account on the official du website and your registered number appears under the My Account section alongside your plan and billing details.
What is the difference between a du number and an Etisalat number?
Both are UAE mobile numbers, but du numbers typically begin with 052 while Etisalat numbers typically begin with 050 or 056. The check methods differ slightly, since Etisalat uses its own USSD code and app.
Is the du number check code the same for prepaid and postpaid?
Yes, *116# works for both prepaid and postpaid du lines, along with the app, website, and SMS methods described in this guide.
Who do I contact if I still cannot find my du number?
Call du customer service on 155 free from within the UAE. A representative can confirm your number once your identity is verified.
What is the difference between a du number check and a du balance check?
A du number check finds your own mobile number using the code *116#, while a du balance check tells you how much credit or bill amount remains using the code *135#. The two codes are not interchangeable.
How do I check my du balance?
Dial *135# from your du line to open the self service menu and select balance inquiry, or send BAL by SMS to 1355 for prepaid lines and BILL for postpaid lines.
Conclusion
A quick du number check no longer needs to be a hassle once you know the right code. Dialing *116# remains the fastest method for most users, while the app, website, SMS, and phone settings all offer reliable backups depending on what you have available at the moment.
Next Steps
- Dial *116# right now and save your du number to your contacts
- Install the du app so you always have a backup way to check your number and account details
- Keep du customer service, 155, saved in your phone in case every other method fails
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[IMG: du number check USSD code screen on a smartphone]
