My previous and current devices Nokia 5800, Optimus One, Samsung Exhibit2, LG L9, L90, Galaxy S3, Tab3 are perfectly viewable in landscape mode with polarized sunglasses. I always use screen protectors. Earlier this year bought LG Stylo. Before i even bought screen protector i tried it outdoors in sunlight. WTF the screen is dark. Returned Stylo, just bought Moto G3. Same story but i really like G so i put a brand new spare screen protector from my tab3 over the G screen and landscape mode is good enough. I ordered a protector on ebay as usual, put it over the screen while it still had the protecting layers on both sides. Good in portrait and landscape. I cleaned the screen, peeled protective layers, applied the protector. Perfect in portrait, better but still dim in landscape. I put the thin protecting layer over the screen and that made landscape viewing perfect. Problem is its not acceptable to keep both the protector and the protecting layer. Not sure what to do. I'm not getting rid of my polarized Rx sunglasses, i wear polarized Rx sunglasses most of the year, i use the phone 90% of the time in landscape mode for dashcam, gps, photo/video, overpriced locked sumsung crap doesn't offer anything good this year that's not galaxy s5 but has 5" display, unlocked, and usable.
I'm looking online if there's a protector that cancels vertical and horizontal polarization, or at least makes phone usable in landscape.