This is the world's smallest flagship phone, the ASUS Zenfone 8. Sure, the display is the most important feature for this claim, and it's aimed exactly at those who want a smaller phone, but with all the specs of a top phone. And it has them, almost all of them! AMOLED screen at 120 Hz, 4000 mAh battery with fast charging, a premium metal and glass construction, and even headphone jack and stereo speakers.