Samsung Pay is a mobile payment and digital wallet service by Samsung Electronics that lets users make payments using compatible phones and other Samsung-produced devices. The service supports contactless payments using near-field communications, but also supports magnetic stripe–only payment terminals by incorporating magnetic secure transmission. In countries like India it also supports bill payments. The service was launched in South Korea on August 20, 2015 and in the United States on September 28 of the same year. In 2016, at the International Consumer Electronics Show (CES 2016)
Samsung Rewards is a loyalty programme which allows users of Samsung Pay and Samsung Pay Mini to earn and redeem points for making transactions using Samsung Pay and Samsung Pay mini.
Samsung Rewards program in India will allow users to earn Rewards points on UPI, Wallets & Bill Payments. Details of the same are covered above "How do I earn Points" section .
Here's a video about Smasung Pay:
Courtesy of Productivity Team: