You purchased the heaviest iPhone, one that even die hard iPhone users find difficult to use due to the weight and width.it'll be hard to sell iphones bought in India since there's many people selling imported ones for cheaper. Consider keeping it or try selling for 1-1.05L
Put it up for sale at 10-15% loss. You will be lucky to find a buyer.
On a serious note, use it. Once you get used to iOS, you may stick to the OS for quite some time.