So I recently have noticed this odd issue with the iPhone 7 I have, sometimes the speaker 'Pops' and then doesn't come back until you restart the iPhone? I also had an odd issue with the camera sometimes opening up black and then not showing a live preview? Then when I quit the app and do it again the preview loads then blurs out? So I restarted the iPhone and then the camera was fine again...has anyone else noticed these oddities?