Xiaomi Redmi Note 4 is launched yesterday.Its sale starts on 23rd January.This Phone Is Same As Xiamoi Redmi Note 3 in Style and Design.Thus Phone Has snapdragon 625 Processor Which Is a Balanced Chip for Heavy Gaming and Day To Day usage.It have 16mp camera with PDAF and front of 5mp.Which Is an average Camera Slightly Better Than Camera of Redmi Note 3.It Have 4100mah Battery Which is good.It have 3 Variant: -
1) 2Gb RAM and 32Gb Rom at Rs.9, 999
2) 3Gb RAM and 32Gb Rom at Rs.10, 999
3) 4Gb RAM and 64Gb Rom at Rs.11, 999
Its Display is 5.5 size.It have GPU of Adreno 506.Which quiet Good For Gaming.It have IR blaster For controlling A.C, T.V, etc
Note For My Friends: - Dont Upgrade Your Redmi Note 3 To Redmi Note 4 Becouse There is no major difference.But if u want more Ram then You Go For It.