Irish provider Checked September 2026
Three call divert codes
To divert calls you don't answer on a Three mobile, dial *61*, the number, then **30#. This is Three's published example for 30 seconds of ringing, and ##002# cancels your diverts.
- Ring time up to 30 seconds
- Cancel with ##002#
- Business landline: *21*
Three sets the ring time: unanswered calls move on after 30 seconds with the published example code.
*61*0850123456**30#Dial it from the phone you want to forward, then wait for the confirmation.
- Turn off
All Three call divert codes
Replace NUMBER with the number you want calls to go to.
Mobile
| Divert calls | Turn on | Turn off |
|---|---|---|
| No answer | *61*NUMBER**30#
Off: ##002# | ##002# |
- Unanswered calls move on after 30 seconds with the published example code.
- Three publishes the no-answer code only. It does not list separate codes for busy, unreachable or all calls.
Business landline
| Divert calls | Turn on | Turn off |
|---|---|---|
| All calls | *21*NUMBER#
Off: #21# | #21# |
- Cost: There is no recurring charge, but Three charges €0.25 each time you set up call forwarding. Calls are charged according to your price plan.
- Variable Call Forwarding has to be enabled on your line first. Call the Three Technical Service Desk on 1800-800-002 and press option 1.
- You can forward to any number in Ireland, fixed or mobile.
How to divert calls on Three
- 1
Check when calls will divert
This code sends calls you do not answer to the destination number.
- 2
Dial the code
From your Three mobile, dial *61*NUMBER**30#, replacing NUMBER with the number calls should go to.
- 3
Check the result
Follow any prompts on your phone. If the request is rejected, check the instructions for your service before trying again.
- 4
Test it
Ring your number from another phone without answering it. Check that the destination receives the call. To turn it off later, dial ##002#.
How to turn off call divert on Three
Dial the code that matches the divert you set up. Calls go back to ringing your phone as normal.
Mobile
- Cancel diverts, including to voicemail
-
##002#
Business landline
- All calls
-
#21#
What to know about call divert on Three
Three's no-answer code
Three writes its code with a single star at the start and two stars before the seconds. Its own example, *61*0861234567**30#, diverts calls you miss to 086 123 4567 after 30 seconds. Write the number the way you'd dial it in Ireland.
All calls, busy and unreachable
Three only publishes the no-answer code. To divert every call, or only when you're busy or out of coverage, use your phone's call forwarding settings, shown below.
Divert calls from your phone's settings
Your phone may also offer call forwarding in its settings, depending on your device and plan. The iPhone Call Forwarding switch sends every call on. Use a supported no-answer option if you want your phone to ring first.
iPhone
- Open Settings, then Apps, then Phone (on older iOS, Settings then Phone).
- Tap Call Forwarding and switch it on. If you use two SIMs, choose your business line first.
- Tap Forward To and enter the number calls should go to.
- Go back. A forwarding icon shows in the status bar while it is on.
Android
- Open the Phone app, tap the three-dot menu, then Settings.
- Tap Calls (or Supplementary services, depending on the phone), then Call forwarding.
- Choose When unanswered so your phone rings first and only missed calls move on.
- Enter the number, tap Turn on, and pick the right SIM if asked.
If the code doesn't work
"Connection problem or invalid MMI code"
The network did not accept the request. Check you have signal, turn off Wi-Fi calling and aeroplane mode, then dial the code again exactly as shown.
"Setting activation failed" or "unsuccessful"
The network refused the divert. Some plans block diverts to other numbers, and some networks want the number in international form. Check the notes on this page, or set it up in your phone settings instead.
Calls still go to voicemail
Voicemail is itself a divert, and only one can be active for each condition. Setting a new divert replaces the voicemail one. If calls still reach voicemail, cancel all diverts and set yours again.
Three call divert questions
How do I divert calls on Three Ireland?
Dial *61*, the number, then **30# to use Three's published 30-second example. For example, *61*0861234567**30# sends missed calls to 086 123 4567.
How do I turn off call divert on Three?
Dial ##002# and press call. This also stops unanswered calls going to your voicemail.
How long can a Three phone ring before it diverts?
Three publishes an example using 30 seconds and says that is the maximum. It does not specify the full range or increments in that guide.
How do I set up call forwarding on a Three business landline?
Call the Three Technical Service Desk on 1800-800-002, option 1, to enable Variable Call Forwarding. Then dial *21*, the number and # to forward calls, and #21# to cancel.
Does call forwarding cost extra on a Three business landline?
There is no recurring charge, but Three charges €0.25 each time you set it up, and calls are charged according to your price plan.
Sources
Checked in September 2026 against the official pages below. Networks change codes and prices, so if something here stops working, their page is the final word.
