Time phone rings before going to voicemail

[PHEZ]

O2 have tried UNSUCCESSFULLY 3 times to increase my ring time from 15seconds to 25 seconds.

They keep sending me **61*901*11*25#

but all I get is “an invalid MMI code.  And it also deactivates my voicemail!

i have a Samsung S22+

Can anyone help?

[Enlli · Accepted solution]

Seen this before with Samsung. One fix is to make sure both WiFi and 4G are turned off.

I've known cases where this has worked, but sadly cases where it hasn't.

Still, worth a shot

[Grumpy-Old-Man]

I have a Samsung S10. I have now contacted O2 three times. Was given the code **61*901*11*30# that did not work. I have also tried various other ideas that were suggested They now have told me twice they would fix it within 24 hrs. Still waiting.

I have now switched voicemail off as I seriously doubt their competence to solve my problem.

Any ideas welcome 

[Enlli]

@Grumpy-Old-Man 

The only way for it to work is to get O2 to turn off WiFi Calling their end.

You can then use the code before getting WiFi Calling turned back on

Message O2 on
Facebook (https://o2uk.co/O2CFB) 
Twitter (https://o2uk.co/O2CTW) or Instagram (https://o2uk.co/O2CIG) , they should be able to help you.