The OnePlus 5 uses the same screen as the OnePlus 3T - no, we don't mean the same specs, it's the exact same panel. AIDA64 detects a Samsung S6E3FA5 panel on both devices. This is a change from the original OnePlus 3, which had an FA3 panel. It's not entirely clear what the differences are between FA3 and FA5. Still, the OnePlus 5 has no hardware improvements over its predecessor, at least as far as screen is concerned. OnePlus 5 uses a Samsung S6E3FA5 AMOLED display panel Actually, our review shows a slightly lower maximum brightness and a slightly worse sunlight legibility for...
Source: http://www.gsmarena.com/oneplus_5_uses_the_same_display_panel_as_the_3t-news-25733.php