Shaky minus sign on iPhone 7 Plus

G’day,

I randomly get the shaky minus sign when handling my iPhone 7 Plus. See picture.

It can happen when I pick the phone up, put it down or just walking along somewhere.

Tried replicating the behaviour on purpose but no-go on that

Seems to be no rhyme or reason to it.

Running iOS 15.1.

Any clues as to why this keep happening?

Cheers.

via Canadian Mac Forums at ehMac https://ift.tt/3C1MC4B