Call divert guide · Three

How to divert calls on Three

The short answer

On Three, set up call forwarding in your phone's settings: choose when unanswered, when busy and when unreachable, then enter the number to forward to. Three's price guide says each diverted call is charged, and the cost depends on the type of number you divert to.

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On an iPhone

Open Settings, then Phone (on newer iOS, Settings > Apps > Phone).
Tap Call Forwarding and switch it on.
Tap Forward To and type the number we give you.
Go back to save it. A phone icon with an arrow at the top of the screen shows forwarding is on.
To stop, switch Call Forwarding off again.

On Android

Open the Phone app, tap the three-dot menu, then Settings.
Tap Calls (on some phones: Supplementary services or Calling accounts), then Call forwarding.
Choose when to forward: when busy, when unanswered or when unreachable. Always forward sends every call.
Enter the number we give you and tap Turn on.
To stop, go back to the same screen and turn each option off.

What it costs

Three's Pay as you go price guide says that if you divert incoming calls to another number, each redirected call is charged, and the cost depends on the type of number. Check your own plan's price guide for the rate.

Worth knowing

On an iPhone, the Call Forwarding switch sends every call, so your phone will not ring. For "only when I don't answer" forwarding, use your network's codes if it publishes them, or ask your network to set it up.

Source

Three: Pay as you go price guide (PDF)

Checked October 2026. Networks change their menus and prices, so if a code doesn’t work, check the source above or ask your network.

Other networks

All call divert guides · How the AI receptionist works · AI voicemail for business · Website + AI voice assistant

Three divert questions

Asked and answered.

Can I divert my Three number to an AI receptionist?+

Yes. Divert to the number we set up for your receptionist, ideally only when you don't answer, when you're busy and when your phone is off, so you still take the calls you can. Check with your network how forwarded calls are charged.

Does diverting calls cost anything on Three?+

Three's Pay as you go price guide says that if you divert incoming calls to another number, each redirected call is charged, and the cost depends on the type of number. Check your own plan's price guide for the rate.

How do I check the divert is working?+

Ring your number from another phone and let it ring out. You should hear your AI receptionist answer, and get the email with the caller's details a moment after you hang up.