Most people dont do this. A L W A Y S turn your Blackberry off when charging it because charging your phone while its on is messing with the computer software on your phone. (which blackberry is mostly all computer software on your phone). The reason why you have to charge your phone while its off is because the battery is electric. With the phone being off the charge isnt going through the battery prong and interfering with the computer software. Its just charging the battery. Also the charge with be alot faster.

Its messed up that none of these stores tell you this! But trust me do what i said! I went through two Blackberrys before i learned this. Also with the charger port on your phone. These are the worst for any phone. So to save yourself trouble always very gently stick in the charger half way. You will save yourself the trouble of it getting loose in the future.