Vivo's new flagship phone, the X21, has a 6.28" 1080x2280 notch-type Super AMOLED display and is based on Qualcomm's Snapdragon 660 chipset. The X21 has a 12 MP selfie camera and a 12MP dual-lens on the back, a dedicated AI core, 6GB of RAM and 64/128 GB of storage.

Vivo X21 photo

The X21 is now shipping for around $450 (64GB). Vivo also announced a version with an under-the-OLED fingerprint sensor (the Vivo X21 UD), which will ship by the end of March 2018 for around $570 (128GB model).

OLED type: 

6.28" notch-type 1080x2280 Super AMOLED

Kyulux - Hyperfluoresence OLED emittersKyulux - Hyperfluoresence OLED emitters