Someone stole my iphone 4s and can i track it?

If it is off can i still track it?
i think i activated icloud
and if this guy keeps my phone off ill never track it?
and if he does use it and connect to Wi-Fi is there any way?

OK, if you never took the time to activate the restriction so that in case somebody steals it and can't turn off Find My iPhone, then you could never track it. The only way is that the person that stole it have no idea how to turn it off, then you can track it and wipe clean all the data, and even install a new password. But for that they have to use it with in data or wi-fi range.

If you had Location Services on the iPhone, you can just go to any apple device and download the find my iPhone tracker app and enter our iTunes ID on the app. (You can go to Apple to do this or use another Apple device if you have any)