Does the ambient light sensor on your iPhone 5 glow red? I noticed mine glows very slightly. I noticed it while rebooting my phone in the dark and the black boot up screen allowed me to see it without my eyes adjusting to the normally light colored screen. My ALS works fine so I am not worried just wondering if anyone else noticed this. If you are going to check you should load up a black background in a dark room and let your eyes adjust to the darkness. It seems to flicker and get brighter when you touch the screen. Take note that is very dim almost like the glow from the infrared emitters on some remote controls.