Spectacular except for one bug....

This game is amazing. Looks great, plays smooth, and all-around fun & addicting gameplay that will make you say "Just one more...." This game is perfection except for one pesky bug. Sometimes, when a person calls me, Facetimes me or exit the app and go back to it, the sound turns off. I check settings and it says its on. So, I keep switching in on and off, but sadly you need to close the game and open it back. I dont know what the problem is, Im playing on a 1-month old, brand new iPhone 6S, so I dont know whats happening. Please solve this imperfection for an otherwise stellar game! You guys are amazing :)

jtanger about Downwell