Samsung Galaxy J2 is quite a good phone. The Rs.8, 000 phone is worth the price. The 8.0 MP Rear Camera is really good and the front facing is also not bad. Auto Focus is really effective. Till now I haven't faced any lags or freezing. But there are chances of facing lags because it has a 1.5 GB RAM.
4G performance is mind blowing. The phone doesn't has the S Voice, Samsung's voice assistant software. But it supports Google Now.
So, for 8, 000 bucks this is a good choice.