UK mobile network Checked September 2026
Sky Mobile call divert codes
Sky Mobile runs on O2's network. O2's published code for all calls is **21*NUMBER#; these are host-network codes, not Sky Mobile-published instructions.
- O2 host-network codes
- Confirm availability on your plan
- Cancel all: ##002#
**61*07700900123*20#Dial it from the phone you want to forward, then wait for the confirmation.
- Turn off
All Sky Mobile call divert codes
Replace NUMBER with the number you want calls to go to.
| Divert calls | Turn on | Turn off |
|---|---|---|
| No answer | **61*NUMBER*20#
Off: ##002# | ##002# |
| Busy | **67*NUMBER#
Off: ##002# | ##002# |
| Unreachable | **62*NUMBER#
Off: ##002# | ##002# |
| All calls | **21*NUMBER#
Off: ##002# | ##002# |
- Sky Mobile doesn't publish its own divert codes. If a code is rejected, check with Sky Mobile.
- Confirm with Sky Mobile that your plan allows diverts to the destination number before relying on them.
- These are the codes published by O2, the network Sky Mobile runs on.
How to divert calls on Sky Mobile
- 1
Check when calls will divert
This code sends calls you do not answer to the destination number.
- 2
Dial the code
From your Sky Mobile mobile, dial **61*NUMBER*20#, 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 Sky Mobile
Dial the code that matches the divert you set up. Calls go back to ringing your phone as normal.
- Every divert at once
-
##002#
What to know about call divert on Sky Mobile
Availability and charges
Sky Mobile has not published a price for forwarding to another number in the linked guidance. Check availability, destination restrictions and charges with Sky Mobile; sharing a network does not guarantee the same features or tariff.
Voicemail after cancellation
O2's ##002# command cancels all active diverts. Ask Sky Mobile how to restore its voicemail if you want missed calls to go there again.
The 20-second example
O2's device guide shows a 20-second no-answer code. The number builder uses that published example; ask Sky Mobile about other ring times.
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.
Sky Mobile call divert questions
How do I divert calls on Sky Mobile?
The O2 code for all calls is **21* followed by the destination number and #. Confirm with Sky Mobile that your plan accepts diverts to that number.
How do I turn off call divert on Sky Mobile?
O2 publishes ##002# to cancel all diverts. These are host-network instructions; check with Sky Mobile if the code fails.
Is call divert free on Sky Mobile?
Check with Sky Mobile. The linked guidance does not establish a rate for diverted calls on your plan.
Why might a Sky Mobile divert code fail?
The codes describe O2 network commands. Your provider must also allow the feature and destination on your plan; contact Sky Mobile if the network rejects the request.
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.
