I have never owned a phone with an OLED display.

I have had at least one phone with an OLED display and have never experienced burn-in on any of them.

I have experienced burn-in on less than half of the OLED phones that I've owned.

I have experienced burn-in on roughly half of the OLED phones that I've owned.

I have experienced burn-in on more than half of the OLED phones that I've owned.