The third largest smartphone vendor in India, Karbonn, Monday said it will sell its Titanium Hexa smartphone priced at Rs16,990 exclusively on Amazon, with pre orders starting May-13 and sales starting May-20. "This initiative will free our customers from the annoyance of crowded marketplaces and malls and recurring parking and shopping woes," said Shashin Devsare, executive director, Karbonn Mobiles.