I have been using this phone for last 3-4 months. Here is my experience:
It has the worst battery for claimed MAH. It wont last for even 12 Hrs.
Below Average camera for claimed 13 MP. U can netter pics for 5 MP of MOto or Samsung mobiles.
Extremely poor processor speed. It takes around 40-45 Sec to load contacts. one will struggle for everything after a period of 4-5 months with this set.
No scope for merging duplicate contacts.
Above all, Flipkart wont ever bother to attend your concerns with this handset because perhaps they know that they cant fix it.
Overall: Its complete waste of money. I wont ever suggest any one to go for it