Flipkart vendors, and vice versa, but these plans never actually came to fruit. In July 2017, Flipkart made an offer to acquire its main domestic competitor, Snapdeal, for around US$700–800 million. It was rejected by the company, which was seeking at least US$1 billion. Flipkart held a 51% share of all Indian smartphone shipments in 2017, overtaking Amazon India (33%). Flipkart sold 1.3 million phones in 20 hours on 21 September alone for its Big Billion Days promotion, doubling the number sold on the first day of the event in 2016 (where it sold a total of 2.5 million phones in
Flipkart and Redmi Note in late-2014 (which saw similarly accelerated sellouts), and Micromax's Yu Yunique 2 in 2017. On 6 October 2014, in honour of the company's anniversary and the Diwali season, Flipkart held a major sale across the service that it promoted as "Big Billion Day". The event generated a surge of traffic, selling US$100 million worth of goods in 10 hours. The event received criticism via social media over technical issues the site experienced during the event, as well as stock shortages. In March 2015, Flipkart blocked access to its website on mobile devices, and began requiring that users