British supermarket giant Tesco says it is planning to launch its own smartphone before the end of this year, as it looks to build on the success it has seen with the Hudl tablet, which has sold over 550,000 units. Chief executive Philip Clarke told the BBC Radio 5 that a “Tesco phone” would launch before the end of the year. The company is also planning to introduce the Hudl 2, a follow to its original £119 tablet, in September.