Amazon's Great Indian Festival sale for Diwali has begunLots of popular budget smartphones such as Redmi 4 are on saleIn the premium segment, iPhone 7, MacBook Air, more gadgets discounted Amazon's Great Indian Festival sale begins from today. The sale will run until 17 October and will offer discounts and cashback offers across all major categories. Amazon sale offers include big discounts on iPhone 7, Redmi 4, MacBook Air, Asus Zenfone 3, and offers on OnePlus 5. There are many more deals, which we've listed below but before we get to those, you should know about offers from various banks. SBI debit and credit card users can get an additional 10 percent cashback on their purchases. To qualify for the offer, customers will need to ensure their minimum order is worth Rs. 5,000. The cashback is capped at a maximum value of Rs. 1,750 per card account. The cashback will be credited by 17 January 2018. In case you don't have SBI cards, you can load cash in your...