Currently Being ModeratedDec 4, 2011 4:06 AM (in response to вероника)
You can locate a lost or stolen iPhone through www.icloud.com. When logged in click on "Find My iPhone". If you have another ios device you can also download "Find My iPhone" from the apps store. I hope this helps.
But like wjosten said above if you did not have the service turned on you out of luck.
Currently Being ModeratedDec 11, 2011 9:19 AM (in response to вероника)
Mobile Me iCloud? Yes helpful but in some conditions like,
You lost your Iphone to the hand of not savvy theft. (dont know how to uninstall apps)
If the theft is kind and retain the apps like Find my phone, it should be connected to 3G or Wifi to be able for you to locate it.
Other than the conditions above, sorry, consider it "donation".
Hope that the Apple can make apps using IMEI instead.
fyi I donate 2X.