At the middle of 2018, Vivo mobile phone announced about the new VIvo Y91 which powered by Qualcomm Snapdragon 439 Chipset. Now they coming with the another version named Vivo Y91 Mediatek. So by the name it's clear that the smartphone having Mediatek Helio P22.
Y91 featuring 6.22 inch IPS display with resolution 720 x 1520 pixels, 19:9 ratio. Powered by Mediatek Helio P22 chipset, Android 8.1 (Oreo); Funtouch 4.5 supporting. Graphics Processing unit PowerVR GE8320. Dual 13+2 MP rear camera and 8MP front camera. Rear mounted fingerprint sensor with Non-removable Li-Po 4030 mAh battery.