Zen Firefox is taking the mobile handset market by storm with its latest offering -- the aggressively priced U-105. Within 90 minutes of being launched, the handset has received 15,000 bookings, and 20,000 enquiries and the company hopes it will not only break into the Indian hinterland, it will also give established smartphone makers a run for their money. Reports CNBC-TV18’s Ashmit Kumar.