I really like my polarized sunglasses, I find them very comforting. They're prescription to boot so I can't speak to the mfg'r. One thing they help with is foggy and overcast days and seem to make distant objects more defined and bike riders seem to stick out better for judging distance when I'm driving. LCD screens emit polarized light; so that's the reason many devices show up as blank when wearing them. Try flipping the device if it can rotate the display output. My android fortunately does not blank on the vertical, but I can turn it 90* horizontal and it will.