Oh and yes, The mini (or is it micro) USB socket is an appalling choice for a charging socket. The should never have removed the dedicated phono type socket for charging. Continual plugging and unplugging a charger makes the mini USB unreliable and the same goes for the charger plug. (Either not charging unless the lead is fiddled with and the mobile put down carefully, or even discharging the battery further.) Not sure which fares worse. I got some success with a separate expensive charger unit without a charging lead but a USB socket, and a quality USB to micro USB lead to plug into the charger; from Maplins. No idea when that will start having issues too.