I have had a desire for about 6 months now on Orange UK. I downloaded a new update (18.104.22.168) on Friday and ever since the battery from 100% charge has lasted about 2-3 hours. I have finally worked out what is happening but I have no idea what to do about it. When I try and put it to sleep using the power button only the screen is put to sleep but nothing else is put to sleep. So the battery usage says it has been running for 90% of the time it has been taken off charge. Has anyone got an idea what to do to fix this because I can't really use it at the minute.