Yes, Redmi Y2 does have the front camera flash.
Yes, Redmi Y2 does have the LED notification light.
Yes, You can connect Redmi Y2 with smart tv.
Yes, Redmi Y2 does have the fingerprint scanner & face unlock, too.
The Xiaomi Redmi Y2 is a slightly better attempt at a selfie-focused smartphone than the model it replaces. It has proven hardware that is capable of delivering a smooth user experience, plus MIUI 9.5 which has a lot of added features.