By default, no, there is no way for them to know the device is being viewed through Find My iPhone. However, your son could enable System Services status bar icon so that the device shows the location services icon in the status bar when any system service location tracking is active.
How can I find out who tried to Find my iPhone?
There is absolutely no way to know if anyone is tracking you using Find my iPhone. The ONLY way someone can track you is if they know your Apple ID and password, so if you suspect someone is tracking you simply change your password and they wont be able to.
Can I see when Find my iPhone was used last?
Turn on Find My iPhone Be sure to toggle Find my iPhone to ON with a tap. When you check for your iPhones last location on iCloud.com, your device will either have a green dot or a gray dot. “A gray dot means its offline,” Apple says. “If the device was recently online, youll also see the time it was last located.
Can you tell when someone checks your location on iPhone?
Android and iPhones iOS do not notify or give an indication when someone checks your location. Any number of apps or system processes trigger a location check. Only your mobile service provider can track you continuously.
How do I check my iPhone location history?
Heres how to find the log — and if you feel so inclined, delete it.Open the Settings app on your iPhone and tap on Privacy. Youll see the location tracking permissions for every app you have installed. Now things start to get interesting. Under History, youll see your iPhones GPS location history. •16 Nov 2015
Can my iPhone be tracked if location Services is off?
Yes, both iOS and Android phones can be tracked without a data connection. There are various mapping apps that have the ability to track the location of your phone even without the Internet connection.