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Proximity sensor - random operation

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Senior Member
Nov 4, 2011
After updating mix3 to miui12, the proximity sensor works randomly. Whether I'm making a call through an application or GSM, after taking the phone away from my ear, the screen does not always light up immediately. Sometimes I have to wait for the caller to hang up.

Do you have that too?

I used the abbreviation * # * # 6484 # * # * and did the test. It turns out that it is working properly. Then why doesn't it work during conversations?