LONDON--Vodafone Group PLC (VOD) said Friday that on Aug. 2 it purchased 10.5 million of its ordinary shares on the London Stock Exchange via Citigroup Global Markets Ltd. at prices between 189.15 pence and 186.4 pence, which will be held in treasury. MAIN FACTS: -Since June 20, 2011, Vodafone has purchased 2.32 billion shares at 3.98 billion pounds. -Shares at 0710 GMT up 1 pence, or 0.27%, at 188 pence valuing the company at GBP92.45 billion. -Write to Ian Walker at ian.walker@dowjones.com Subscribe to WSJ: http://online.wsj.com?mod=djnwires