If you don't have any tracking software installed on it then it is pretty much impossible. Additionally, if the battery is drained or the cellphone is turned off, then even the tracking software will not help.
A about two a few several weeks ago (17th Apr to be exact) one of my associate losing his New new samsung GT-I9003 from his dorm area at 0200hrs. Nowadays when i was verifying my authorization, i saw him position a few number of actions from me. Problem is, we are on an outstanding university. 500+ students, workers, kitchen, cleansing - usually lot of people. I suggested we analyze Google Latitiude's position history and sure enough for past times 15 times, the mobile cell phone's position is distribute all over the university. Electronic Store