On my Note 4, how do I turn on the phone ring tone on speaker, with headphone plugged in?

[AC Question]

Note 4 : How to turn on phone ring tone on speaker, with headphone plugged

Hi,
i recognized that i don't hear the phone ring tone on incoming calls if the headphone is plugged on my Note 4. On my S3 it was still using the speakers, even with headphones plugged.

How do i turn it on on Note 4 as well ?

Regards,
Frank