How to change ringtone?


I’m making a reminding app. I need to change ringtone for my reminder.
How can I get all the ringtone list on iOS?


Hmm, if I remember correctly, you can’t get access to the system sounds, but you can provide your own. Check out the docs here.

notification.beep(): Plays a beep sound. 
On Android devices, plays the default beep notification sound. 
For iOS devices, you must provide the beep sound as a beep.wav file in the www/ root of the device. The beep must be shorter than 30 seconds. You cannot set the number of times to repeat the beep.