UK mobile network Checked September 2026
BT Mobile call divert codes
To divert calls you don't answer on BT Mobile, dial **61*+44NUMBER#, replacing the first 0 of the number with +44. Calls move on after 15 seconds, and ##61# turns it off.
- Number in +44 form
- Unanswered calls move after 15 seconds
- Cancel all with ##002#
BT Mobile needs the +44 form. We convert it for you.
BT Mobile sets the ring time: unanswered calls move on after 15 seconds.
**61*+447700900123#Dial it from the phone you want to forward, then wait for the confirmation.
- Turn off
- Check it's on
All BT 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#
Off: ##61# | ##61# |
| Busy | **67*NUMBER#
Off: ##67# | ##67# |
| Unreachable | **62*NUMBER#
Off: ##62# | ##62# |
| All calls | **21*NUMBER#
Off: ##21# | ##21# |
- Unanswered calls move on after 15 seconds.
- Use the number in international form: 07700 900123 becomes +44 7700 900123.
How to divert calls on BT 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 BT Mobile mobile, dial **61*NUMBER#, replacing NUMBER with the number calls should go to in +44 form.
- 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 ##61#.
How to turn off call divert on BT Mobile
Dial the code that matches the divert you set up. Calls go back to ringing your phone as normal.
- No answer
-
##61# - Busy
-
##67# - Unreachable
-
##62# - All calls
-
##21# - Every divert at once
-
##002#
How to check call divert is on
Dial the check code and the network tells you whether that divert is on.
- No answer
-
*#61# - Busy
-
*#67# - Unreachable
-
*#62# - All calls
-
*#21#
What to know about call divert on BT Mobile
Voicemail codes
BT Mobile sends unanswered calls to voicemail automatically. 15710 turns those voicemail diverts off and 15711 turns them back on; 15712 sends every call to voicemail and 15713 stops that. Dialling 15710 is free.
Who can get BT Mobile
BT Mobile is only available to BT Broadband customers. If your mobile is on a BT Business plan, the same divert codes apply.
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.
BT Mobile call divert questions
How do I divert calls on BT Mobile to another number?
Dial **21* then the number with the first 0 replaced by +44, then #, to divert every call. To have your phone ring first, use **61* instead, so only calls you do not answer move on.
How do I turn off call divert on BT Mobile?
Dial ##002# to switch off all diverts. To remove one, dial ## then the code you used (21, 61, 62 or 67) and #, for example ##61#.
How do I check if call divert is on with BT Mobile?
Dial *# then the code you used and #, for example *#61# for no answer or *#21# for all calls.
Can I change how long my BT Mobile rings before it diverts?
BT does not publish a way to. Its no-answer code diverts calls not answered after 15 seconds.
How do I stop BT Mobile sending calls to voicemail?
Dial 15710 from your phone, which is free, to turn off the diverts to BT Mobile voicemail, and 15711 to turn them back on.
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.
