Xiaomi's Mi Mix 3 5G is a high-end smartphone that features a 6.39" 1080x2340 Super AMOLED display - that takes up the whole front of the phone. The Mi Mix 3 5G features a Snapdragon 855 chip set, 6 GB of RAM, 64/128 GB of storage, a dual camera setup and a mechanical pop-up dual-lens selfie camera. The phone supports 5G connectivity.

Xiamoi Mi Mix 3 5G photo
The Mi Mix 3 5G will ship by May 2019 starting at around $680.

OLED type: 

6.39" 1080x2340 Super AMOLED