Why "custom" option not showing under "ringtone+sound" in lumia535?

[Windows Central Question]

I want to add a custom ringtone to my lumia 535 but in "ringtone+sound", custom option not available in the list. So help me

 

[N_LaRUE]

Easiest way to do it is to use this app - Ringtone Maker | Windows Phone Apps+Games Store (United States)

If you want another method read this - Add ringtones to my Windows Phone | Windows Phone How-to (United States)