Iphone6 camera stuck first frame

Hello! Why does camera stucks at the first frame of the scene on Iphone6? The game is working in background, you can move character, but the screen render is stuck on the first frame of main camera. What might be the problem? (we tested the app on various other android devices and Iphone4 and evetything works just fine. The problem currently appears only on Iphone6.) Thnx!