The beep isn’t the whole story — what happens to a waiting caller on Mobily if you never press the swap button depends on whether you have voicemail configured, a detail most quick-answer guides skip entirely.
Quick answer
Dial *43# to activate, #43# to deactivate, and *#43# to check status. Free on all Mobily accounts.
If you ignore the beep
Your current call is never affected — it continues normally regardless of what you do with the second call. The waiting caller, if you don’t press anything, is typically routed to voicemail once your ring timeout expires (if voicemail is active), or simply continues ringing until they give up if it isn’t.
Switching to the second caller
Press your phone’s call button to place the first caller on hold and answer the second; press it again to swap back. Both stay connected — nobody is disconnected by the swap.
A GSM standard, not a Mobily feature
*43# works identically on any GSM network worldwide, including while roaming — there’s no Mobily-specific behaviour to learn if you’ve used call waiting on a previous SIM.
Want incoming calls redirected elsewhere entirely rather than just flagged? Mobily doesn’t currently have a dedicated forwarding guide on this site, but Mobily call barring covers the related restriction feature.
*43# is the GSM/3GPP standard supplementary-service code, verified against Mobily’s official support guidance, July 2026.
Step-by-Step Guide
- 1
Activate
Dial *43#.
- 2
Check
*#43# to verify status.
- 3
Deactivate
#43# to turn off.
Alternative Methods
Dial *43# from your phone dialer.
Phone Settings > Call Waiting
Troubleshooting
No beep
Check *#43#. Also enable in phone Settings > Call Waiting.
Can't switch
Press call/answer button during the beep.
Look Up More USSD Codes
Frequently Asked Questions
Free?
Yes, free on all Mobily accounts.
All plans?
Prepaid and postpaid.
Switch calls?
Press the call button to toggle between the two calls; press again to switch back.
What happens if I don't respond to the waiting beep?
Your active call continues unaffected; the second caller typically goes to voicemail if configured, or continues ringing until they hang up.
Do I need to enable anything in my phone's own settings too?
Some handsets need call waiting enabled both via *43# and in the phone's own call settings menu — check both if the beep doesn't happen.
