Board Thread:Game Discussion/@comment-26893997-20160327192020/@comment-26249703-20160328111941

As Miniman said, you should have a button that slides across, just above the volume keys on the left side of your phone (not the screen). I'm not an Apple expert, but I'm pretty sure most Apple phones have it, somewhere. It overrides the sound so that may be why you're not getting any from the RR3 app