No sound on iOS (Grim Fandango Remastered)
Issue:
I'm not getting any sound on iOS but other games work fine.
Solution:
iOS
If you are experiencing no sound on your game on iOS devices, please ensure that you do not have your ringer mute enabled. Please note that because this issue is caused by the ringer mute, it may cause this game to have no sound even if you hear sound in other games. If you see a switch with a orange mark, switch it back to its default position as shown on the picture below. The switch will look different on iPad devices, but the same principle applies.
In newer models, this option is sometimes in software rather than hardware. Try adjusting the volume slider in the Control Center: