you'll only get crap phones from crapsung at 5k budget. if you can adjust with WP interface, get Lumia 520/525.
Lumia 520/525 in Rs5k range?
Anyways, to the OP... if you want a real smart phone at Rs5k, just go for the el cheapo Chinese rebadged phones. No other choice at your budget. iBall and Lava have some models.