No sound on iPad air/iPhone?

1. Make Sure the iPad/iPhone Sound is Not Muted.
2. Turn the Sound All the Way Up.
3. Close the Apps.
Double tap the home button so that you can access each app that is running, and then slide each of them up to close them.
4. Reboot the iPhone /iPad
Once this has been completed, press the power and home button down at the same time and hold them until after the iPod screen has gone black. This process will be finished as soon as the Apple logo appears, and that is when it is time to stop pressing the buttons.