Extending ringtone for iPhone 14

If “extend the ringtone” means increase the duration of the ringtone before voicemail starts, that generally cannot be done. If it’s possible (extremely unlikely), your cellular carrier would control it.

What exactly do you mean by “extend the ringtone” on your iPhone? Are you referring to playing the ringtone (or ringing) for a longer period of time? If YES, then that is controlled by your carrier. If you feel that I have misunderstood your question then repost your issue with clear details for the readers of your post. Thanks.

Axel F.