Three UK call divert codes
How to divert calls on Three UK in United Kingdom: the codes to dial from your phone, how to set it up in Phone dialler (GSM code), and how to switch it off again.
| Forward | Turn on | Turn off |
|---|---|---|
All calls | **21*[number]# | ##21# |
When you don’t answer | **61*[number]# | ##61# |
When you’re busy | **67*[number]# | ##67# |
Replace [number] with the full number you want calls sent to, with its country code, for example +44 7700 900123. Dial the code like a phone number and press call. A confirmation message or tone means it worked.
Step by step
- Three has no in-app divert toggle — use your phone's keypad
- To divert all calls, dial **21*[number]# and press call
- To cancel later, dial ##21# (or ##002# to clear all diverts)
- Or call Three on 333 and ask them to set up the divert
Ask Three UK to do it
Call Three free on 333 and ask to divert all calls to the number you want.
Divert missed calls to an AI receptionist
The same codes work with Sysevo. Get a number for an AI voice agent, then use the “when you don’t answer” code so the agent picks up the calls you miss: it answers, books, takes the details and logs everything in your CRM. Your customers keep dialling the number they already know, and nothing is ported or switched off. See phone numbers and AI voice agents.
Questions
How do I divert all calls on Three UK?
Dial **21*[number]# and press call, where [number] is the full number you want calls sent to, with its country code, for example +44 7700 900123. To turn it off, dial ##21#.
How do I divert calls on Three UK only when I don't answer?
Dial **61*[number]#. Calls ring your phone first and move on only if nobody picks up. Dial ##61# to stop.
Can Three UK set up call diversion for me?
Call Three free on 333 and ask to divert all calls to the number you want.
Other networks in United Kingdom
Codes can change and some plans block divert. If a code doesn’t work, ask Three UK support. All networks.
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