How to Make Your Phone Screen Readable in Direct Sunlight We've all been there. You're outside, you pull out your phone, and the screen is an unreadable mirror of glare. Whether you're trying to read a map, show a photo, or — most importantly — display a message for others to see, sunlight is the enemy. The physics is simple: phone screens max out around 600–800 nits, while outdoor lighting can hit 10,000+ nits. You can't beat physics, but you can outsmart it. The trick is contrast optimization. Max brightness + white text on black background + large bold font = a message that's actually readable outdoors. That's exactly what a good LED sign app does automatically.…