Adjust the settings:
Touch Phone ringtone and select a ringtone or select None if you don't want the phone to ring.
You can choose a unique ringtone for calls from specific people so you'll know instantly who's calling.
To change the default sound used for notifications, including messaging and email apps:
For each app, you can also set a ringtone for that app's notifications.
Although your phone comes with lots of ringtones, you can also download custom sounds.
To download ringtones using an app:
If you downloaded a ringtone (.mp3) to your phone without using a ringtone app:
Update your settings to select the new ringtone.
If you're not hearing your ringtones, look for
or
in your status bar, which means you're in Do not disturb mode. Press the Volume Down button and touch End now to allow all calls to ring.