Well, the Xiaomi Mi6 is definitely better than the Xiaomi Redmi Y2 as it comes at a lot bigger price than the Xiaomi Redmi Y2 and has a lot better specifications.
Processor: The Xiaomi Mi6 comes with the Qualcomm Snapdragon 835 MSM8998 processor which is better than the Qualcomm Snapdragon 625 MSM8953 processor of Xiaomi Redmi Y2.
Camera: The Camera quality of the Xiaomi Mi6 with a resolution of 12 MP + 12 MP with the OIS feature is a lot better than the Xiaomi Redmi y2 which has a resolution of 12 MP + 5 MP.
The Xiaomi Mi6 also has a better display with a pixel density of 428 PPI.
mohd umair khan