Change # of rings

[GalaxyS2Kent]

How do I change the number of rings before the call goes to voicemail? I've tried asking Google and get several different answers, none of which works on my Galaxy S9:

**61*901*11*30#
**61*101**30#
**61*121**30#
**61*321**30#

I always get this message: "Call forwarding. Connection problem or invalid MMI code. (801)"

I think I may have messed up my phone as when someone calls, my phone rings 2-4 times and then the caller gets the message "This number is not recognized." (or something like that)

Any advice would be appreciated. Thanks.

 

[Dannydet]

It depends on your carrier.
Should be a phone number that you dial for your voice mail, which also controls your number of rings within the options.

 

[GalaxyS2Kent]

It depends on your carrier.
Should be a phone number that you dial for your voice mail, which also controls your number of rings within the options.

Yes, that was one advice I saw on the Internet but I went to the O2 website and couldn't find anything to help. I got the robotic chat but that was a waste of time. I don't know how to contact them to ask about it, but I'll keep trying. Thanks for your response.

 

[mikedt]

Yes, that was one advice I saw on the Internet but I went to the O2 website and couldn't find anything to help. I got the robotic chat but that was a waste of time. I don't know how to contact them to ask about it, but I'll keep trying. Thanks for your response.

Network MMI codes are usually carrier specific. And I think the codes you found on the interwebs might be for Telstra in Australia.

I was an O2/Cellnet customer, but that was over 20 years ago now, and in those days one could just call them by dialling 202 from the phone itself. Maybe that sill works?

 

[GalaxyS2Kent]

Thanks everyone but I still cannot get it to work. I've looked at various websites that say to do this: **61*901**30# where 901 is the number I call for voice mail and 30 is the number of seconds I want to change to. But I get first the message: "MMI code started", then I get "Call forwarding. Connection problem or invalid MMI code (801)" I don't know what the (801) means unless it's an error code. Sorry to keep harping on this, but it really is driving me mad!