Samsung is celebrating the second anniversary of its M series by offering discounts and offers on select phones as part of its 'Samsung Carnival' sale. The entry-level Galaxy M21 is available starting at ₹13,999, while the Galaxy M31 starts at ₹15,999. The Galaxy M31s, on the other hand, starts at ₹19,499. The Galaxy M51, with a massive 7,000mAh battery and Snapdragon 730G processor, can be bought for ₹22,999. Customers purchasing these phones through Amazon.in or Samsung.com can also avail an additional ₹1,000 cashback on HDFC Credit or Debit cards. Users can also get a voucher for up to ₹1,000 if exchanging an old phone.