How to divert calls on O2.

This diverts only the calls you don't answer within 15 seconds — your phone still rings first. It works with Anseya or with any answering service.

Switch on

**61*01134960521*11*15#

Your Anseya number goes in the middle. Dial it once, from the phone whose calls you're diverting.

Switch off — just as fast

##61#

One dial and everything is back exactly as it was. Check the state any time with *#61#.

Step by step

Open the phone dialler — not a settings menu.
Dial the switch-on code and press call. O2 replies with a confirmation.
Ring your number from another phone, let it ring out, and hear it answered.

If a code fails, nothing breaks — your calls simply behave as before. These are standard GSM codes rather than a O2 feature. Where O2 differs, the difference is printed here once we have seen it on a real O2 SIM.

Screenshot — O2 dialler
with the code entered

Screenshot — carrier
confirmation message

To be captured on a real O2 SIM. No mockups posing as screenshots.

What it costs on O2: O2 pay-as-you-go charges its standard rate for diverted minutes. On most contracts it is included — check your plan.

Every carrier gets its page EE O2 Vodafone Three giffgaff

Not on this list? What to do if your network has no divert codes.
O2's own help page: https://www.o2.co.uk/help/device-and-sim-support/call-divert