Which mobile i should buy? - 1

In India 4G mobiles is not available at least at 15k. One mobile which I like is this one from lenovo
LENOVO IDEAPHONE S920
http://www.flipkart.com/...sks9s9gmai

I'm sorry but currently no 4G phone is available in India at this price range. But if you can compromise with this feature, Samsung Galaxy Core is the best for you. It has got all the features, you have mentioned here except the 4G requirement. It's an amazing phone which gives you the best performance.

Canvas 2 hd

Add a bit more and get a nexus 4 best for a long time to come

Go for micromax mobiles or nokia lumia, samsung galaxy grand duos or normal it will not cost u more than 18000.

Yes dear in India 4G mobiles is not available in 15k

No such good phone in this range, i suugest you to buy galaxy grand or if you lack some money, then look for a 2nd hand grand

Don't go for micromax. I will throw away even if i'm given for free

Please mention your budget.