Sony Ericsson claim a standby battery life of 400 hours, I'm only getting 7 hours. I 've taken it back under guarantee twice; the dealer sent it to Celestica each time but its still just as bad. Sony sub-contract their repairs to Celestica. The charger and two batteries have been checked twice. It the Sony claim exaggerated or is Celestica not too competant. Sony and Celestica have "parted company". Has anyone got any ideas.