Unlike a subscription that needs renewing, call waiting on STC Kuwait stays active indefinitely once switched on — through the VIVA-to-STC rebrand, through firmware updates, through years of use. If you turned it on long ago, it’s almost certainly still running.
Quick answer
Dial *43# to activate, #43# to deactivate, and *#43# to check status — free on prepaid and postpaid.
Check before assuming
Rather than guessing whether you activated it years ago, *#43# gives a definitive yes-or-no answer in seconds. No harm in checking even if you’re fairly sure — it costs nothing.
How it behaves
A beep during an active call signals someone else calling. Press your call button to hold the first and answer the second; press again to swap back. Neither caller is disconnected.
Want to block or redirect calls instead of just managing overlaps? See STC Kuwait call barring or call forwarding.
*43# is the GSM/3GPP standard supplementary-service code, verified against STC Kuwait’s official help centre, August 2026.
Step-by-Step Guide
- 1
Activate
*43#.
- 2
Check
*#43#.
- 3
Deactivate
#43#.
Alternative Methods
Dial *43# from your phone dialer.
Phone Settings
Troubleshooting
Not working
Enable in phone Settings too.
Switch
Press call button.
Look Up More USSD Codes
Frequently Asked Questions
Is call waiting free?
Yes, activating, deactivating, and checking status are all free.
Does it work on prepaid?
Yes, on both prepaid and postpaid STC Kuwait lines.
Did the VIVA-to-STC rebrand change this code?
No, *43# is a GSM standard unaffected by branding changes.
How do I know if I already have it on?
Dial *#43# for a definitive status check rather than relying on memory.
Does it turn off automatically?
No — once active it stays on until you specifically dial #43#.