Du’s call barring covers more ground than the basic three-code set you’ll find on most GCC operators — alongside blocking all outgoing or all incoming calls, Du lets you carve out exceptions for roaming and near-home international dialling specifically, which matters if a blanket bar is more restrictive than you actually need.
Quick answer
Standard GSM codes with your barring PIN (default 0000):
| Bar | Code |
|---|---|
| All outgoing calls | *33*PIN# |
| Outgoing international | *331*PIN# |
| International except UAE | *332*PIN# |
| All incoming calls | *35*PIN# |
| Incoming while roaming | *351*PIN# |
| Remove all bars | #330*PIN# |
The two extra codes worth knowing
*332*PIN# bars international calls except to numbers registered in the UAE — useful if you want to stop premium or far-flung international dialling while still allowing calls to, say, a UAE-registered international business line. *351*PIN# is narrower still: it only bars incoming calls while you’re roaming abroad, leaving your line fully open when you’re back home, which avoids the all-or-nothing tradeoff of a blanket incoming bar.
Granular cancellation
Du also splits cancellation by direction rather than forcing an all-or-nothing reset: #33*PIN# removes only outgoing bars, #35*PIN# removes only incoming bars, and #330*PIN# clears everything at once if you’d rather start fresh.
Securing the PIN
The factory PIN is 0000 on every Du line — change it immediately via the Du app or by calling 155, since anyone who knows the default can modify your barring settings just as easily as you can.
Need to redirect calls instead of blocking them? See Du call forwarding.
Codes verified against du’s official support guidance, July 2026.
Step-by-Step Guide
- 1
Choose type
Outgoing (*33*), international (*331*), incoming (*35*).
- 2
Activate
Dial code + PIN + #. Example: *33*0000#.
- 3
Cancel
#330*PIN# removes all barring.
Alternative Methods
Dial *33*PIN# from your phone dialer.
Du App > Services
Troubleshooting
Wrong PIN
Default is 0000. Call 155 to reset.
Can't make calls
Check *#33#. Cancel with #330*PIN#.
Look Up More USSD Codes
Frequently Asked Questions
What is the default Du barring PIN?
Usually 0000. Change it via the Du app or by calling 155.
Is call barring free on Du?
Yes, setup and usage are free — you only pay for calls you actually make.
I forgot my PIN — what now?
Call 155 to have Du reset your barring PIN.
What does *332*PIN# actually block?
International calls except those to UAE-registered numbers — narrower than a full international bar (*331*PIN#).
Why would I use *351*PIN# instead of *35*PIN#?
*351* only bars incoming calls while roaming abroad, leaving your line fully open at home — *35* blocks all incoming calls regardless of location.