Code required for A41

[Purplejemima]

I need a code to delay my calls going to voicemail too soon. Currently it's about 15 seconds which gives me no time. I have a Samsung A41. I've tried numerous codes so far but no success. Can anyone help? 

[Bwillg · Accepted solution]

Normally voicemail is controlled by your network provider. Most cases when you call your voicemail listen to options to change settings

[Purplejemima]

OK thank you. I'll try them.