If your Nokia Lumia 610C Proximity or Ambient Light Sensor has stopped working or you are getting any other kind of malfunction solution in this post can help you. Before I explain the solution let me explain what Light Sensor and Proximity Sensor is.
Ambient Light Sensor in Nokia Lumia 610 or Lumia 610C is used to detect light around your mobile phones to make necessary adjustments to the brightness. When you activate Auto Brightness feature in your mobile phone the brightness gets low when you are in a dark area and it gets high when you are outside. This information is provided to your mobile phone by Ambient Light Sensor or ALS for short.
The proximity sensor is used when you receive a phone call and pressing the phones next to your ear the screen gets dark to save battery. To start repairing first you need to check if Software is not causing this issue. To check that your need to activate Diagnostics App in your Nokia Lumia 610C. If you don’t know how read this guide How to Test and Diagnose Problems in Nokia Lumia 610C.
After opening Diagnostics app open up ALS Test. Here you will see a grey scale rectangle in the middle of the screen and a light intensity value. Cover the Proximity window on your phone to see the if the Rectangle changes colors and The Light Intensity in mLux is changed. If the ALS is working there then you need to flash your phone. If not than you need to change your Nokia Lumia 610 ALS sensor with a new one.
Here is a Flowchart explaining the same procedure I mentioned above. Read it carefully. I have also marked Nokia Lumia 610C Proximity and ALS sensor in this diagram.
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