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Hello, I replaced the lcd screen on my iphone 6s. afte replacement the sensor doesnt work anymore. if i put the phone on my ear the screen become dark and stays dark until the caller ends the call. if i put it away from my ear the screen stays black until caller ends call. if press home button etc that doesnt help, screen stays black until call ends. i changed the sensor (frontcam) etc and it doesnt work either. anybody has an idea? Thanks in advance. Kind Regards Joseph

I had this problem with a few phones I repaired. If you are using a non OEM sensor with a non OEM screen, make two small scratch holes in the paint on the screen where the proximity sensor sits. You should clearly see light through the scratches. Always glue the original sensor holder into the correct position. If you are using a working OEM sensor with a non OEM screen, darken the inside of the glass where the sensor sits with a black sharpie. I have noticed that the OEM sensors are prone to faults once removed so I find it better to use non OEM sensors as they are far less sensitive and cost very little. I have not had a problem since adapting this method on 100+ repairs.

I also ran into this problem and confirmed it’s parts based off of two different suppliers. I did find a very odd fix that I’ve been using for bad part proximity issues since the iPhone 4; take the proximity sensor out of it’s seating and where the opacity on the glass is (the black dot), grab a black sharpie and color on the back of the glass as much as you can. You want to basically fill the square area where the proximity sensor will fit, and it will all be coated with sharpie. Put the proximity sensor back in, put the phone back together, and there’s a good chance the proximity issue will be working again. Note: this fix will not work if there are any type of front camera / ear speaker problems, as that indicates it’s likely the flex cable itself.

its will look strange but when i replacement 6s screen proximity sensor stop work but screen start have sensors in the top side of it if i touch it screen go black and start lightening after leaving it its look like Microsoft models any body got that before

I have tried different suppliers screen and come to conclusion that this is due to faulty screen as iPhone 6s now use additional circuits just on screen to regulate .

Had the same problem several times. My problem was not the sensor but the replacement screen. When I changed replacement screen with a new one it was working again. (screen going black under a phone call when the sensors was covered) I know, it’s strange.

It IS unfortunate that this problem persists. It’s NOT the technicians I assure you. We know how to replace screens with no problems. It’s just the replacement parts we can get for the 6S are not the best. My repairs stop at the six and six plus. I don’t do 6S or beyond anymore because of this reason.