Your du balance means two very different things depending on your line. On prepaid it is the credit you have loaded and can spend; on postpaid it is the running total you will be billed for at month-end. One code — *135# — serves both, but reads them differently, and knowing which view you are looking at prevents surprises on billing day.
Dial *135# — the universal du balance code
From your du line, dial *135#. Prepaid users see spendable credit in AED plus active packages; postpaid users see current-cycle usage and the amount accruing toward the next bill. The code is free, needs no internet, and returns a result in seconds on both Android and iPhone.
Prepaid: what the credit figure actually covers
The AED figure is your main wallet — the money available for pay-as-you-go calls, texts, and buying data packs. It is not your data allowance: gigabytes inside a bundle are counted separately (check the data prompt on *135#, or see how to check du data balance). If the number looks like it is draining on its own, the culprit is almost always an auto-renewing pack or a value-added service quietly deducting each cycle.
Postpaid: reading usage before the bill lands
Postpaid *135# shows consumption, not credit — data used against your plan, out-of-bundle charges, and the amount building toward your statement. For a formatted summary, SMS BILL to 1335 and du texts back your outstanding amount, last payment, and cycle dates. A “negative” balance here simply means an unpaid bill; service continues until the due date.
The bill-forecast trick most du users miss
Postpaid customers can see an estimated month-end total before it is final. In the du app open Account → Billing → Bill Forecast: it projects your bill from usage so far this cycle, which is the single best way to catch an unexpected roaming or out-of-bundle charge while you can still act on it.
Every way to check, ranked by detail
| Method | Best for | Shows |
|---|---|---|
| du app | The full picture | Credit, data meter, bill, forecast, alerts |
| *135# | Speed | Balance + packages, no internet needed |
| SMS BILL to 1335 | Postpaid billing | Outstanding amount + cycle dates |
| du.ae login | Desktop or abroad | Same as the app, any browser |
Topping up soon? See how to recharge du for the card-type codes and card-free options.
Verified against du’s official dial *135# help page, July 2026.
Step-by-Step Guide
- 1
Open your phone dialer
Launch the Phone app on your smartphone. If dual-SIM, ensure your Du line is selected as the active calling SIM.
- 2
Dial *135#
Type *135# and press Call. A USSD menu appears showing your balance, active packages, and remaining allowances. Follow the on-screen prompts to navigate different categories.
- 3
For postpaid bill details
Send the text "BILL" to 1335 to receive a summary SMS with your current outstanding amount, last payment date, and billing cycle information.
Alternative Methods
Dial *135# from your phone dialer.
SMS "BILL" to 1335 (postpaid)
Du App > Home > Account Overview
Login at du.ae > My Account
Troubleshooting
*135# returns "USSD code running" then disappears
This happens when the network is congested. Wait 30 seconds and try again. Alternatively, use the du app or send "balance" via SMS to 1355 for a text-based response.
Balance shows negative amount (postpaid)
A negative balance on postpaid means you have an outstanding bill. This doesn't affect your service until the bill due date. Pay through the du app, du.ae, or any bank ATM to clear the balance.
Look Up More USSD Codes
Frequently Asked Questions
Why does my du prepaid balance drop when I am not using the phone?
Auto-renewable data packages and value-added subscriptions deduct from your main balance on their renewal date. Open the du app under Account → Active Services and cancel anything you did not intend to keep.
Does *135# work for both prepaid and postpaid?
Yes, but the display differs: prepaid shows remaining credit, postpaid shows current-cycle usage and outstanding amount.
How do I check my du balance while travelling abroad?
USSD codes are usually blocked on roaming. Use the du app or log in at du.ae over Wi-Fi. For support from abroad, call +971 4 390 5555.
What is the du customer care number for a balance dispute?
Dial 155 from your du line (free) for billing and balance queries, or use the du app chat for a written record.
Is there any charge for dialling *135#?
No. Balance checks via *135#, SMS to 1335, and the du app are all free.