i downloaded an app ( 20mb) to my PC and successfully copied it to the micro SD on Lumia 620. i started opening Store/ SD card. It required an Microsoft account, so I signed up an acc via my computer and logged in on my cellphone. Then i pressed " install " to install the app, but the screen just remained "installing" for 3 hrs. it really pissed me off. When i restarted my Lumia, i discovered it ran out of money. i wonder why my app could not be installed, because of i dont have enough $ in my lumia to connect ?