I am getting ready to use a very old Ipad in a home made sun box for flight and so far turning the pad screen up to high and hiding it in the box appears to work quite well in full sun unless the sun is at my back. At that point the screen surface reflects like a mirror in the sun box and I can see my face in the screen. This pad was my Mom's until she passed away 2 years back and I eventually plan to upgrade. Is there a portable pad available with a frosted screen or one touted to work better in sunlight? Thanks...