Xiaomi Mi A1 proximity sensor not working

Question

I just got a new Mi A1, not even a week old, and in the middle of calls my cheek is turning on the loudspeaker, muting, etc. Clearly the proximity sensor is poorly calibrated/not working.



Is there any easy way to fix this or should I return for a refund?


— Shaul Behr | Sources

Answer

Answer was actually pretty simple. This post suggests a couple of solutions, but the first one worked for me:




Restart your phone.



— Shaul Behr | Sources

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