The green light is that the screen cable of the phone has been broken, and the phone screen has been broken, in this case, you can only take your phone, go to the local Apple after-sales repair outlet, give your phone a new screen, or replace the new phone cable, due to the fault caused by human damage, you need to pay for repair
This situation should be the line fell loose, this situation if he no longer commit it can be used normally, if you can only find maintenance personnel to help you reinstall the buckle