I replace an iPhone 5s screen have replaced several of them probably thousands but I am also getting the red screen it does have something to do with the proximity sensor because if I turn the phone on I get the red screen But I open and disconnect the proximity sensor/front camera then the phone will work fine,to be honest with you because of the screws problems I just decided to leave the Metal shield/plate out,but I still cannot turn the phone off and then back on without getting the red screen and I've already changed the proximity sensor three times,if anybody can please help that would be much appreciated it's driving me nuts