I had an appointment at Apple Store in Sydney last week, but I did not go. My wife has 7, I have got 7 plus and we own iPad Pro 9.7. They all have this problem. I knew I will get a similar answer like you Mathias. Surely everybody has the same problem. What should we expect from Apple? Nothing! Even if they change the phone for you, it will be the same!!
Veeeery very disappointing! I have been Apple user all my life. Not sure where Apple is heading with this. Many will not follow!