How to Reduce Sun Glare on the Screen
There is not too much we can recommend here other than to play around with your display settings on your phone. Some phone models work great in the sun, others…not so hot.
You will want to make sure that your brightness settings on your phone are turned all the way up, as that will help with being able to read the screen in bright sunshiny conditions. If you are wearing sunglasses during your round you may also want to remove them to check as they can impact the ability to see the screen as well.