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I lost the filter( a very small piece of white plastics) in front of ambient light sensor during my repairing by accident. What's the function of it ? Anyone know where I can buy a one ?
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Answer is yes
it helps to control intensity of light prediction on the sensor. you can check with the filter & without filter and you will be able to identify the different results that screen brightness will not control properly when you check without filter. but it is a compulsory component to have to save your battery life.
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Is it possible I can find a new one in somewhere?
What is the practical application of this? Why is this included with the phone?
Display consume considerable percentage of battery. the ambient light sensor can determine how much light is available in the area surrounding the device and automatically adjust the brightness of the screen to save battery life.
Sorry i meant specifically the filter. I seeyou have edited your original answer. You mentioned previously that the filter filters out IR waves reflected off the skin. Do you have any information about why this is a problem for phone brightness light sensors?
mine was stuck to the flex cable - look there!
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make a picture and mark that filter so I can tell you
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