@Anoopchennat: You also have the option of reaching out to our Support Team by heading to samsung.com > Scroll to the bottom of the page > Contact us, and an advisor will be able to use your device details to verify your remaining warranty period. This isn't 100% accurate, as it is based on the manufacture date rather than the purchase date, but it should hopefully be of some help to you. You'll just need your model number, serial number and IMEI number, which can all be found in Settings > About Phone.
Typically, your warranty runs for 2 years from the purchase date, however some Galaxy devices purchased from Amazon have an extended 3 year warranty.
