Hi, I have just bought an iphone a few days ago. I have dowloaded some applications and it seems that the battery is going down very quickly at around 1hour.It seems that when I plug it to charge it does not charge or else it charges a bit and stops.While i play a game the battery goes down very quickly.Then it switch it off because it’s out of battery and when I switch it again the battery will be at 30%.. I went to the shop and the sales person told me that this could be caused because I am having an application running all the time. This could be true?? And now he told me that he is going to cleam my iphone. Thanks in advance if you reply.