The OnePlus 3T isn't a huge improvement over the already-solid OnePlus 3, but it's still a well-rounded unlocked phone with buttery smooth performance, long battery life, and highly customizable software.
Relatively affordable; Fast performance; Attractive metal unibody; Solid front and rear camera; 10+-hour battery life; Clean UI and highly customizable software; Larger storage model available; Dual SIM cards
Same screen resolution as the OnePlus 3, and less sharp than the competition; Lacks waterproofing and expandable storage