When working with a tablet or phone in direct sunlight you will often encounter a problem viewing the screen because of sun glare. There really isn’t much we can do about it from an app perspective; however, you can purchase an anti-glare screen from either your carrier or the store where you acquired your device.
There are some drawbacks to using these screens, first it will most likely reduce your screen resolution and make it harder to view and your screen may not be as responsive as you would like.
We are changing some of our data entry and menu screens to replace the white on black and the yellow on black with a more traditional black text on white background. Unfortunately that will not completely solve the problem, the best way to deal with the glare is the anti-glare screen.