Oneplus2, define/add user ringtones I'm have a OnePlus2 device and I can't seem to set a different ringtone other than those provided with the ROM (Oxygen OS 3.1.0). I can't see an option for it under Settings &gt; Sound and Notification.

Am I missing something? Is there a way to set a ringtone without flashing a new Rom or adding some cheap app for it ?
As @Izzy hinted to check the tag wiki, I found this old answer

How do I set a custom MP3 as a ringtone for other notifications?

The answer said I should put the ringtone file at a certain directory in my SD card, that directory doesn't exist in my device but instead I noticed a ringtones directory that Hangouts created to insert it's own notification sounds. 

I placed an mp3 file in there and now I can set it from Sound and Notification.