HOW TO set four ring tones before answer will swith on?

[AC Question]

I would like to set my telephone so that it rings at least four times, before the answering massage switches on.

 

[SpookDroid]

So you want to delay the incoming call notification? Or you want to set it to 4 rings before it goes to voicemail? The first cannot be done on any phone that I know of, and 3rd party apps that do that don't ring a bell (no pun intended). If it's the latter, that's up to your carrier's Voicemail options, and they may not allow the time for your phone to go to voicemail to be customized.