Right after our review of the Samsung Galaxy S10+ right here, an avid reader messaged us asking us why is there a blinking light right above the battery percentage icon. After conversing for a while, we check it for ourselves.

And there it is. The bright blinking light appeared on our unit of the Galaxy S10+ as well. Though, this light only appears when we were calling people.

ASUS ZenBook 13 UX333

Samsung Galaxy S10 proximity sensor

Upon further discover, we found out that this blinking light is the proximity sensor. When a call is taking place, placing my finger near the sensor will cause the screen to turn off and vice versa. That is what a proximity suppose to trigger.

We can also confirm that this is indeed the proximity sensor by checking through the user manual of the Galaxy S10 series of smartphones. They are labelled clearly at the area where the light was blinking. I mean – who reads user manuals nowadays, right?

Samsung Galaxy S10e proximity sensor user manual.jpg
Samsung Galaxy S10e
Samsung Galaxy S10 proximity sensor user manual
Samsung Galaxy S10
Samsung Galaxy S10+ proximity sensor user manual.jpg
Samsung Galaxy S10+

So I got a little curious and started to download sensor testing apps. I realized that these apps did not trigger the light to blink. I was unable to test the proximity sensor of the Galaxy S10 series with any conventional apps, which was weird.

Perhaps Samsung has implemented a brand new way of how the proximity sensor works and is currently incompatible with conventional test.

All in all, just don’t worry about the blinking light that appears when you make a call. It is by design. What you should be worried is the light not blinking when you are making a call.


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