Hi I was using whatsapp on my iPhone5.I was not able go to the main menu by pressing the center button so I hold on to the button for 2 seconds.Then the whole display turned out to be black
I was not able go to the main menu from whatsapp by pressing the center button so I hold on to the button for 2 seconds.Then the whole display turned out to be black & white. how can i fix it?
iPhone 5