Before you follow these steps, see if your speaker works: In Settings > Sounds (or Settings > Sounds & Haptics), drag the Ringer and Alerts slider up or down a few times.
- 1. If your device has a Ring/Silent switch, move the switch forward—toward the device's display—so that the orange part of the button shouldn't be visible.
Open Settings > Do Not Disturb and check that Do Not Disturb is off.
If you're using an iPad, you can also swipe down from the top-right corner to view Control Center and make sure the Mute/Bell button and Do Not Disturb button aren't enabled. - 2. Open an app that has music or sound effects, then adjust the volume with your volume buttons or the slider in Control Center.
- 3. Turn off Bluetooth. To make sure that your device isn't sending audio to a Bluetooth accessory, go to Settings > Bluetooth and turn off Bluetooth.
- 4. Make sure you are using the full version of the app. You may have to go to Settings -> Restore purchases to confirm the Apple ID used to purchase the app.
You can check out a quick tutorial here: 