its been a while since ive gotten a new blackberry. i used to have the iphone 4 before going back to a blackberry. anyways the question i had was when i get a blackberry 9900 how long should i keep it on charge for the first time. ive looked around at some other threads for other phones and all the answers are different. should i wait till its fully charged and then use it or keep charging it for 12 hours or whatever