Creating a ripple in the mid-segment smartphone market, Reliance Retail on Friday launched a feature-packed smartphone+ LYF F1 at Rs 13,999.LYF F1 is equipped with carrier aggregation (CA) support that gives users an improved data transfer rates and unmatched browsing experience. The feature is designed to tap the fullest potential of the advanced 4G Jio network.The 5.5-inches device sports 16MP rear camera and is powered by Snapdragon processor with 3GB RAM.A built-in video player helps you watch two videos on one screen along with a "Smart Play" display feature that pauses the video when someone looks away from the screen.LYF F1 comes with "Smart Ring" technology -- a ringer that helps users trace phones even when in silent mode. "LYF F1 smartphone+ is designed to take full advantage of the future-ready Jio network. It is unmatched in speed, quality and product experience," said Sunil Dutt, President-Devices, Reliance Retail in a statement.Housing a powerful battery with day-long backup, LYF F1 is now available in retail stores across the country.