Remember 'touch disease', the hadware flaw that afflicted iphone 6 and 6 Plus? Well, the problem hasn't gone away, it's simply moved to a different function of the phone. On the iPhone 7 & 7 Plus there is a common defect that can cause the device to 'bootloop' which is to display only the apple logo, then a black screen and repeat indefinitely. This issue is caused by the motherboard being able to flex inside of the housing and disconnect one of the tiny chips that makeup the phone. In the iPhone 6 & 6 Plus it was the 'touch ic' that would disconnect causing the touchscreen to stop functioning, and often for the screen to display the grey bars at the notification bar on the top of the screen. The problem on the iphone 7 & 7+ is that this defect eventually prevents the phone from coming on at all! It will usually start with the speakerphone option in calls, and the voice memos app not working. Then frequently the phone will take a lot longer than usual to come on after being turned off, finally no longer coming on at all and sticking on the Apple screen. Click the link below to learn more, and if this has happened to you give us a call or a visit and we can repair your motherboard to get your phone and your data back to a usable state.