You will find below the most common questions.
1- The button on the side of the iPad might be on the “mute” position, switching it could restore the sound.
2. If it that doesn’t work you can :
Other wise, the iPad has an interesting mute quirk, which can result in no sound coming from certain apps over your iPad speaker, even though volume is turned up and you can hear the sound with headphones.
This Soft Mute “feature” mutes app music and sounds, but not the audio from Hulu or Netflix, which makes it difficult to diagnose, especially since your headphones still work, but thankfully it is easy to fix.
In order to fix this, you need to follow the instructions below :
Support for each app