How many people have experienced screen burn in on their S6 yet?

Hi all, let's get straight to the point. I'm about to buy a new phone, probably the s6, but I'm concerned about one thing: how many of you have experienced screen burn in? I know it's a common thing with amoled displays. I'm not talking about the design flaw because of which you can see a sort of rectangular outline (only visible with full brightness outside and with a white screen) on the display (I'm not entire sure of this, I've read some reports about it though and I don't think it would bother me), but I'm talking about impressed/ghost images like status bar/text/icons/etc. that appear even if you change image on the screen. Hope I was clear enough, english isn't my native tongue. Thanks for the help!