Redmi Y1 is a decent smartphone with no up to mark features. It same like redmi 4/4A only selfie camera is better this time with selfie flash. Otherwise all are the same. Same budget oriented qualcomm snapdragon 425 chipset is capable of using day to day use. With 4gb ram and 64gb internal storage it performs quite well in normal and moderate usage. Still the price is little bit of high in terms of design and hardware.
Design and build quality is average as other xiaomi redmi phones. Still not like redmi note 4 category.
Sound quality is okay. Loud speaker is not that loud but delivers nice amount of detail. Call quality is nice too.
Look and feel is good. In terms of price it seems that phone is quite light and feels good in hand. The curved 2.5d curve glass is looking cool.
The main highlight is front camera. Xiaomi claims that this is the better front camera in low budget. And yes camera is quite good. The dynamic range and exposure is good. In day light it takes good selfies and in low light camera performs quite well. Back camera is also good.
All the important sensors are available.
It is a user friendly device in terms of mid ranged budget smartphone.
I think still in 11k price redmi note 4 is value for money. Note 4 battery backup also great from y1. If front camera is only your preference in budget with 4gb ram then it is okay for you. Otherwise not value for money.