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How to Lengthen Ringtime on any O2 Mobile

by on ‎02-12-2018 13:42 - last edited on ‎03-12-2018 11:31 by (43,895 Views)

How to Lengthen Ringtime on any O2 Mobile. This is for all Pay Monthly and Pay and Go mobiles.

The following method will work on any O2 mobile and means you can control the time interval before a call goes to Voicemail.

Important ::

If you have wifi calling enabled, you may need to disable it before you use any of the codes in this guide. You can enable wifi calling again after changing any voicemail settings.

On your keypad, dial 1750 to switch on voicemail.


Enter the following into your keypad as though you were just making a call :


**61*901*11*30# then simply press 'call'.


Please note 30 is the time in seconds before voicemail kicks in and can be set in increments of 5 ie. 05, 10, 15, 20, 25 to a maximum of 30 seconds. (also see video)


Alternatively you can switch voicemail off completely by calling 1760 from your mobile when you know you will be available to answer calls. Switch on again when needed by calling 1750.


More info on Voicemail here : Using Voicemail | Support | O2

and :

Community Guide : Voicemail : All You Need to Know






Just a tip : To avoid charges when travelling overseas switch off voicemail before you go as you may not be able to do so once you have left the UK and the O2 Network. Charges for left messages on aircraft, cruise ships and ferries can be huge.

on ‎02-12-2018 13:43

Please note : @Marjo has asked me to update this so it can be made into an How To Guide.

on ‎02-12-2018 13:44
Very useful @jonsie
by Anonymous
on ‎02-12-2018 13:48
More info
on ‎02-12-2018 13:50

Good work @jonsie

on ‎03-12-2018 11:29

Great work @jonsie, thanks for taking the time to update this guide!

I've seen it used as part of helping with queries here on the community so thought it would be good if it was in the actual Guides section. thumbsup

by Community Manager
on ‎03-12-2018 13:37

Awesome @jonsie! Thanks for getting this one updated. smiling

on ‎12-03-2019 18:42

The solution to the problem does not work for me. I get an error message 

"Call forwarding 

Connection problem or invalid MMI code.


I am using a Nokia 7 Plus on a contract 


Help please  ;-)

on ‎12-03-2019 18:51

@Ellen you need to ask customer services to turn off wifi calling on your account first before the shortcode will work.

on ‎07-01-2021 09:57

Thank you so much, all sorted now, extended ring time to 30 seconds, hopefully no more missed calls

on ‎07-01-2021 15:49

Good news @Honeybun , glad you found the guide helpful smiling

on ‎28-04-2021 11:58

If you want to check the delay time set...




the number returned is a bit longer than "901" :-)  , but it works - thanks for the tip @jonsie 

on ‎28-04-2021 16:11

useful, thanks @Projectionist 

this is the info returned