Whether you have just activated a fresh corporate DU SIM for a new team member, performed a factory reset on a company phone, or simply need your registered mobile number for a vendor portal or government registration — knowing how to check your DU number in UAE is a small but important task. As an authorized du partner in the UAE, Stalwart has compiled every official method into one complete, current guide.
This guide applies to all DU SIM types — prepaid, postpaid, and corporate business SIM accounts — across Dubai, Abu Dhabi, Sharjah, and all seven UAE emirates.
Why You May Need to Check Your DU Number in UAE
Forgetting or not knowing a DU SIM number happens more often than people expect — especially in a business context. Here are the most common situations where a DU SIM number check becomes necessary:
When onboarding a new employee, the SIM may be activated and handed over without the number being clearly communicated. Verifying it immediately avoids issues with payroll systems, IT provisioning, and account registration.
When a company phone is reassigned, repaired, or factory-reset, the number stored in contacts is lost. The SIM number must be confirmed before the device is returned to active use.
UAE government portals (myCID, UAE Pass), banking systems, HR platforms, and vendor registration forms all require mobile number verification via OTP. Getting the wrong number wrong delays the process significantly.
IT managers and company administrators overseeing multiple DU SIMs need to confirm which number belongs to which device or employee — especially important when processing upgrades, plan changes, or replacements through Stalwart.
Sales teams, account managers, and field staff regularly need to provide their direct DU business number to clients, vendors, and partners — particularly for WhatsApp Business communication or call routing setups.
Method 1: DU Number Check Code — Dial *135# (Fastest)
The fastest and most reliable way to perform a DU number check in UAE is by dialling the official DU USSD code for number check. This method works on every DU SIM — prepaid, postpaid, or corporate — and takes under 10 seconds with no internet connection required.
Official DU Number Check Code: *135#
Dial this from your DU SIM. Your full mobile number — including the +971 UAE country code — appears on screen immediately.
Step-by-Step: DU USSD Number Check
Ensure the DU SIM is inserted and active in the device. On dual-SIM phones, make sure the DU SIM is selected as the default calling line.
Enter the code exactly: asterisk (*), 135, then hash (#). Tap the green Call button.
A small pop-up message appears within seconds displaying your full DU mobile number. No voice call is made — it runs over the GSM signalling network.
Add it to your contacts immediately, update your company's SIM register, or share it with whoever needs it. The USSD pop-up disappears once dismissed.
Method 2: Find My DU Number Using the My DU App
The My DU app is the official self-service application for all DU subscribers. For business accounts managing multiple SIM lines, it is the most feature-rich way to find your DU number in UAE — alongside usage monitoring, billing, and plan management in one place.
| Step | Action | Notes |
|---|---|---|
| 1 | Download "My DU" from App Store or Google Play | Published by Emirates Integrated Telecommunications Company |
| 2 | Log in with Emirates ID or DU account credentials | Corporate account admins use the business login |
| 3 | View the home dashboard | Registered DU number appears prominently at the top |
| 4 | Navigate to Account Settings for full details | Shows all SIM lines registered under the account |
Business Account Advantage: Corporate DU accounts managed through Stalwart can view all registered SIM numbers, data usage per line, and billing details under one consolidated dashboard — eliminating the need to check each SIM individually.
Method 3: Check DU Number by Calling a Colleague or Contact
When neither the USSD code nor the app is accessible, the most straightforward offline method to know your DU number is to make a call to any active number and read the caller ID from the receiving phone.
- Call a colleague, manager, or any active number from the DU SIM
- Ask the recipient to read back the incoming caller ID number
- Confirm the number and save it immediately to the device or company SIM register
Method 4: DU Customer Care — Dial 155
For cases where USSD is not working or the SIM has been suspended, DU's customer care team can verify your DU SIM number after confirming identity. This is the recommended route for complex account queries involving corporate SIM lines.
| Contact Method | Number / Channel | Availability | Best For |
|---|---|---|---|
| Call from DU SIM | 155 (free) | 24/7 | Quickest — no charge |
| Call from Landline / Other Network | 04 390 5555 | Business hours | When DU SIM unavailable |
| DU WhatsApp Self-Service | +971 55 556 6655 | 24/7 (bot) | No-call preference |
| DU Website Live Chat | du.ae → Chat | Business hours | Desktop users |
| DU Store Visit | Bring Emirates ID | Store hours | Suspended SIMs, ID issues |
When calling 155, say: "I need to verify the registered number for my DU SIM." The agent will ask for your Emirates ID number or trade licence (for corporate accounts) to authenticate before sharing the number. The process typically takes under two minutes.
Method 5: DU WhatsApp Self-Service
DU's official WhatsApp channel provides a fast, message-based alternative to calling customer care — particularly useful for business users outside standard hours or who prefer not to hold on a phone line.
Add +971 55 556 6655 to your contacts as "DU Customer Care UAE".
The automated chatbot presents a service menu. Select the account enquiry or number verification option.
Provide your Emirates ID number when prompted. Once verified, your registered DU number is confirmed via the WhatsApp conversation.
⚡ Need Help with a Corporate DU SIM or Account Query?
Stalwart handles SIM activation, number management, and account changes for business clients — free advisory, no waiting on hold.
Redirected to WhatsApp with your details pre-filled. We respond within 60 seconds.
Alternative Ways to Find Your DU Number in UAE
Beyond the five main methods, these additional approaches often help business users resolve a DU SIM number check quickly:
1. Check the SIM Card Packaging or Welcome SMS
The original DU SIM packaging includes the mobile number printed on the sleeve. When first activated, DU also sends a welcome SMS to the SIM containing the number and initial plan details — search your inbox for "DU" or "Welcome" to retrieve it.
2. DU Self-Service Portal at du.ae
Log into your account at du.ae using Emirates ID credentials. Under Account Details, all registered numbers on the account are displayed — useful for company administrators managing multiple lines simultaneously.
3. Check Phone Settings (Android)
On some Android devices, navigate to Settings → About Phone → SIM Status → My Phone Number. This displays the SIM number if the carrier has broadcast it to the device — not all handsets support this, but it is worth checking before using other methods.
4. Check Via Another Device's Call Log
If any call has previously been made from the DU SIM, the recipient will have the number in their call history. Ask a colleague to check their recent calls for the number that appears from that device.
DU Number Check — Quick Method Comparison
Use this table to choose the right method based on your specific situation:
| Method | Requires Internet | Requires Balance | Time | Best For |
|---|---|---|---|---|
| *135# USSD | No | No | < 10 sec | Everyone — fastest option |
| My DU App | Yes | No | ~30 sec | App users, multi-line accounts |
| Call a Colleague | No | Minimal | ~1 min | Quick offline check |
| WhatsApp DU | Yes | No | ~5 min | No-call preference |
| Customer Care 155 | No | No | ~5 min | Suspended SIMs, complex issues |
| DU Store Visit | No | No | 30+ min | ID-related or registration issues |
Common Issues When Checking a DU Number — And How to Fix Them
Frequently Asked Questions About DU Number Check in UAE
Conclusion
The quickest way to perform a DU number check in UAE will always be the DU USSD number check code *135# — it works in under 10 seconds, costs nothing, needs no internet, and works on every DU SIM without exception. For business accounts managing multiple lines, the My DU app or du.ae portal provides a complete view of all registered numbers in one place.
If you manage corporate DU SIMs for your company — whether that is three lines or thirty — Stalwart handles activation, number registration, plan changes, and ongoing account management on your behalf as an authorized du partner in the UAE. Need to get your team on du Business Mobile Plans with pooled data and a single account? We set it up end to end.