free cell tracker mobile phoneHow do you find a lost/dead T

I have a Samsung Gravity. I lost it. I suffer from memory loss. I tried calling it and it went straight to voice-mail. What can I do? Is there like a free online cell phone tracker thingy or somethingfree cell tracker mobile phone? Help Please ASAP!!!
Sorry, but tracking software needed to be installed & activated before the phone was lost.
I suggest contacting a bunch of friends & going to the last place you remember using itfree cell tracker mobile phone & doing a massive search...
no such thing and no way you can just find it when its off. all u could do is get a new phone and hope your service provider has all the data you had in your old phone