Flipkart and Amazon India, the country largest online retailers, have surpassed sales from last festival season sale events by a considerable margin, driven by strong demand for smartphones and televisions. Flipkart sales doubled from last year, the online retailer said in a statement on Sunday evening. Flipkart claimed it accounted for at least 70 percent of total ecommerce sales in India during its five day Big Billion Day (BBD) sale which concluded on Sunday, indicating it had beaten Amazon by a wide margin.Amazon India declined to comment on its performance in comparison to Flipkart. Flipkarts sales and volume were yet again driven by categories such as smartphones and large appliances. Earlier during the week, Flipkart claimed that it sold at least 1.3 million smartphones during the first 20 hours of the sale launch for the category. Mint could not immediately ascertain the exact figures that both Flipkart and Amazon reported during the sale events, since both BBD and the Great Indian Festival concluded a few hours after this story went to print. Last week, Flipkart had claimed that it was on track to double sales from last years BBD sale .which would indicate gross sales of at least Rs. 6,000 crore (nearly $1 billion). Neither Flipkart nor Amazon commented on exact gross sales figures. The sales figures cited above also include sales from Flipkart owned units Myntra and Jabong.Gross sales are net of discounts but before product cancellations and returns, which tend to jump during sale events.