Steps to change the phone ringtone for calls on Motorola Moto Z2 Force 

1. From the home screen, swipe up to view App drawer.
2. Scroll to and tap Settings.
3. Tap Sound.
4. Tap Phone ringtone.
5. Tap to select a ringtone and then tap OK.

Steps to change the notification sound for emails and texts on Motorola Moto Z2 Force 

1. From the home screen, swipe up to view App drawer.
2. Scroll to and tap Settings.
3. Tap Sound.
4. Tap Advanced.
5. Tap Default notification sound.
6. Tap to select a ringtone and then tap OK.

Note: Ringtones placed in the Ringtones folder and notification tones placed in the Notifications folder of the internal storage will appear in the list of available ringtones or notification tones. Both ringtones and notification tones must be a supported file type.