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Fingerprint sensor not working

My phone got wet during rains and since then my fingerprint sensor is not working. I tried every solution on google but of no use.

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@vishaka since this is a liquid damaged phone you have to do a few general things then just focusing on the specific stuff.

For now, you want to stop continuing to try to charge, sync or otherwise use your phone. This potentially can make a bad situation worse. This may further damage your phone.

The next thing to do is to clean it. Disassemble your phone using something like this video You must remove all EMI shields from the motherboard. After you removed those, clean the whole board as well as the charging board (daughter board), connectors and all with +90% isopropyl alcohol. Follow this guide , and even so it was written for an iPhone 3G all the points are still pertinent to your phone as well. While you clean your board, check for any obvious damage, like burned or missing components etc.

When it is properly cleaned, you must replace the battery. This is a must and not an option. It will fail if you do not take care of it now.

All these steps are to avoid delayed failure caused by corrosion. Best thing to do would be to clean it with an ultrasonic cleaner, but if you do not have access to one, this will at least help. Once all this is done, reassemble your phone and reevaluate. In your case, knowing that the fingerprint scanner is not working, I would go ahead and replace it as well. You can use the same video for that. Replacement Fingerprint Sensor Flex Cables are available at many places online. Always make sure that you get the right one according to your exact model.

Until it is cleaned, everything will only be a guess. Even with all this, water damage has only a small chance to be fully repaired, but at least you can give it a try.

While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same problem as you do. It's easy and fun to create these guides. The iFixit community will appreciate this.

Repair is War on Entropy!

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