UK mobile network Checked September 2026
SMARTY call divert codes
To forward calls you don't answer on SMARTY, dial *61*NUMBER*20#, where 20 is the seconds your phone rings first. Dial ##61# to turn it off, or *21*NUMBER# to forward every call.
- Single * at the start
- Status check with *#61#
- One code for all four: *002*
*61*07700900123*20#Dial it from the phone you want to forward, then wait for the confirmation.
- Turn off
- Check it's on
All SMARTY 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: ##61# | ##61# |
| Busy | *67*NUMBER#
Off: ##67# | ##67# |
| Unreachable | *62*NUMBER#
Off: ##62# | ##62# |
| All calls | *21*NUMBER#
Off: ##21# | ##21# |
- Ring time: change the 20 to anything from 5 to 30 seconds, in steps of 5.
- SMARTY gives these codes for when you're having trouble setting up call forwarding from your phone's settings.
How to divert calls on SMARTY
- 1
Check when calls will divert
This code sends calls you do not answer to the destination number.
- 2
Dial the code
From your SMARTY 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 ##61#.
How to turn off call divert on SMARTY
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 SMARTY
SMARTY codes start with a single *
SMARTY publishes its forwarding codes with one asterisk at the start, such as *61* and *21*, not the double ** some networks use. Type them exactly as shown, followed by the number you want to forward to.
Pausing a divert without losing the number
SMARTY lists two ways to switch a divert off. "Cancel and forget" codes such as ##61# remove it completely. "Cancel and retain" codes such as #61# or #21# pause it but keep the number, and *61# or *21# turns it back on again.
Forwarding on all four conditions at once
SMARTY also lists *002*NUMBER#, which sets a divert for all four conditions in one go: all calls, busy, no answer and unreachable. Because it includes all calls, your phone will not ring first. Check it with *#002#.
Cancelling everything
SMARTY lists #002# to switch all four diverts off at once, under both "cancel and retain" and "cancel and forget". To delete a stored divert number for good, use the ## code for that divert, such as ##61#.
The ring time
The number after the last * in the no-answer code is how many seconds your phone rings before the call moves on. SMARTY doesn't list which values it accepts. Mobile networks allow 5 to 30 seconds in steps of 5.
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.
SMARTY call divert questions
How do I set up call forwarding on SMARTY?
Use the Call forwarding option in your phone settings, or dial a SMARTY code: *61* then the number, *, the seconds and # for calls you do not answer, or *21* then the number and # for every call.
How do I turn off call forwarding on SMARTY?
Dial ##61# for the no-answer divert, ##21# for all calls, ##67# for busy or ##62# for unreachable. SMARTY lists #002# to switch all four off at once.
How do I check if call forwarding is on with SMARTY?
Dial *#61# for the no-answer divert, *#21# for all calls, *#67# for busy or *#62# for unreachable. *#002# checks all four.
What network does SMARTY use?
SMARTY is owned by Three and shares its network.
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.
