Hello!
I recently noticed an overlay of a "microphone button", which is permanently on the top right corner of my screen. It's there no matter which app I have open, and it's back again after a restart.
I have a Huawei P20 Pro.
It does not appear on screenshots, so I had to take a picture with another phone, attached. I had to turn up the contrast of the photo in order to have it visible better.
Does anyone know what this could be? How could I test this?
Or could it simply be a defect of the screen, can those screens even have such a thing as a 'burn-in'? It's already there on the PIN entering screen. I can't say if it's visible during boot, since the background is black and it's not visible by the eye on a dark background.

Thanks for any help or hints.
I recently noticed an overlay of a "microphone button", which is permanently on the top right corner of my screen. It's there no matter which app I have open, and it's back again after a restart.
I have a Huawei P20 Pro.
It does not appear on screenshots, so I had to take a picture with another phone, attached. I had to turn up the contrast of the photo in order to have it visible better.
Does anyone know what this could be? How could I test this?
Or could it simply be a defect of the screen, can those screens even have such a thing as a 'burn-in'? It's already there on the PIN entering screen. I can't say if it's visible during boot, since the background is black and it's not visible by the eye on a dark background.

Thanks for any help or hints.
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