In a surprise announcement, Xiaomi on Sunday revealed that it is participating in the e-retailer Flipkart’s “The Big Billion Day Sale” and will be offering 150,000 units of Redmi 1S without any registrations or flash sales. Yes, you read it right. This is the first of Xiaomi’s no frills sales and you will be able to buy the Redmi 1S like any other product from Flipkart beginning 8AM on October 6, however there will be rush, so make sure you are ready to buy it as soon as it goes on sale. Despite this being a registrations-free sale and the availability of 150,000 units, we expect the Redmi 1S to sell out in a matter of minutes. To remind you, Xiaomi Redmi 1S has got a price-tag of INR 5,999 and comes with 4.7-inch 720p HD IPS display, Snapdragon 400 quad-core processor, 1GB of RAM, 8MP rear camera and Android 4.3 with MIUI v5. The phone also packs 2000 mAH battery, 8GB of internal storage, microSD cards slot, dual-SIM support and 3G connectivity. In addition to Redmi 1S, Xiaomi is also selling 25,000 units of Mi 3 smartphone tomorrow, the phone will however will only be offered to the consumers, who have tried to buy it as a part of five or more flash sales but were unsuccessful. Flipkart will be informing such consumers today, letting them know that MI 3 will automatically be added into their carts on October 6.