Microsoft Lumia 435 for Rs 4504/-
https://paytm.com/shop/p/nokia-lumia-435-black-CMPLXMOBNOKIA-LUMIA-DUMM1415A748B9D
Use Promo code GET15 and get 15% cashback. (Max 1 order per user)

FEATURES
4-inch (800 × 480 pixels)
WVGA display powered by a 1.2 GHz dual-core Qualcomm Snapdragon 200 processor with Adreno 302
GPU 1GB of RAM and 8GB internal storage expandable up to 128GB via microSD
runs on Windows Phone 8.1 OS
planned upgrade to Windows 10
2MP primary camera with video recoding and 0.3MP front facing camera
1 year manufacturer warranty for device and 6 months manufacturer warranty for in-box accessories including batteries from the date of purchase