Flipkart is hosting a three day long sale called the Big Freedom Day starting from tomorrow – August 9 to August 11 midnight. During the sale, the e-commerce store is going to offer great deals and discounts of products across all categories, including the smartphone section. It is at Flipkart’s Big Freedom Day sale that Xiaomi’s most selling phone – Redmi Note 4 will be available at an exchange offer and several more deals.Redmi Note 4, as Flipkart claims in its official poster (see above), it is for the first time that the phone will be available on offer. Interested buyers will be able to buy the Redmi Note 4 on an exchange offer, which means consumers will be able exchange their old phones and get Redmi Note 4. Additional to that, at the Big Freedom Day sale, Flipkart will be offering another Rs 1,000 (extra) discount on the exchange value of the old phone.For example, if you old phone gets an exchange price of Rs 5,000, during the Big Freedom sale you will get an extra Rs 1,000 off over the actually exchange value, which in this case is Rs 5,000. Apart from this, Flipkart will be up to 12 per cent higher exchange value for old smartphones. The offer is limited only till the sale ends on August 11 midnight. Flipkart is offering up to Rs 12,000 exchange offer on Redmi Note 4 64GB/4GB RAM varaint, the 32GB/3GB RAM stoarge version of the phone will be available at an exchange offer of Rs 10,000. While the 32GB/2GB RAM varaint of the Redmi Note 4 will be available an exchange off of Rs 9,000.advertisementAlso Read: Amazon Great Indian Sale deals announced: Up to 40 per cent discount on smartphones, 65 per cent on Power banks and moreAlongside these offers, Axis bank credit card holders will be able to get an extra 5 per cent discount. All three variants of the Redmi Note 4 including — 2GB RAM/32GB storage, 3GB RAM/32GB storage variant and 4GB RAM/64GB storage will be available for purchase.Xiaomi will soon roll out the latest Android Nougat software update to the Redmi Note. This Flipkart confirmed via a poster which reads: “Android Nougat update coming soon on your Redmi Note 4.” Currently, Redmi Note 4 currently runs on MIUI 8 based on Android 6.0 Marshmallow.Redmi Note 4 is powered by a Snapdragon 625 SoC, 4100mAh battery and sports a 5.5-inch full-HD display. On the camera front, the Xiaomi Redmi Note 4 sports a 13-megapixel camera on the rear, while features a 5-megapixel sensor as the selfie snapper. The device sports an all-metal body and is backed by a 4100mAh battery.Xiaomi recently revealed a list of phones which will get Nougat update. As per the list of Xiaomi phones that will get Nougat update — Mi Max, Mi 5, Mi 5S, Mi 5S Plus, Mi 4C, Mi 4S, Mi Note, Mi Note 2, Mi Mix, Mi Note 4X are the devices that will get Android 7.0 Nougat update. While, on the other hand, Mi 6, Mi Max 2, Mi 5C and Redmi 4X will get 7.1.1 Nougat software update. What is not sure is that if Redmi Note 4 will get Android 7.0 or 7.1.1 Nougat.Check out all the other deals that Flipkart is going to offer during the Big Freedom Day sale.