[AC Question]

I cannot read my tablet in the sun or even under an umbrella w/o glare!

[Rukbat]

Really? How do you prevent glare on any shiny surface? Buy a screen protector (you can get them 3 for $5 or close for just about any phone, tabs are probably a little more expensive) and a can of Krylon clear matte. Spray the "you" side of the protector, the side that doesn't go on the screen, then put the protector on the screen. (Or just "polish" the outside surface of the protector - before you bring it anywhere near the phone - with #0000 steel wool [or finer - more 0s - if you can find any].)