Is this normal - had my 6+ replaced just last night due to the lagging issue but I guess it's even worst. I was reading a post on this forum and suddenly my screen went blank - as in all white. And Ging back to previous page will give me a blank page and once I tap the screen, that's when I will see the page. Now I am thinking of going back to 6 and just wait for a 6+S or when they can fix the lagging issue.