Why my iPhone cannot detect the location? I enable the lost mode and its confirmed by email but the device did not show any location. But when I first set my lost mode they asked me a pass code, but now if I turn on my lost mode the phone never ask me a pass code. It only appears on the screen that it is done. What is the problem with that? It's possible that my lost mode and Apple ID are hacked by the thief or they deactivated it.
They could just have to phone turned off. Although if your phone is logged into itunes, it's POSSIBLE (with forensic software or more knowledge than most iphone thieves) to get your itunes user and password and then of course they could turn it off. However, I think it is an easy thing to determine if someone else is logging in with your credentials, so I'd be willing to bet that they just have the phone turned off.