.....charge the battery yet ??
You don't have to unlock it since you are also using T-mobile. Unlocking is only required if you wanted to use it with At&t. What model phone are you trying to activate ? Not enough information for anyone to help you.
so i broke my phone and was able to get a phone from a friend, its the same carrier (tmobile) but when i put my sim card in the phone wont turn on, do i have to unlock the phone first?