Hello, guys! I discovered something really odd. iPhone searches for a network when it's ordered not to do it. If you put your iPhone in airplane mode (I like to do it when I go to bed), you will find it in the morning with GPS on (in particular with "network research" system service on). Isn't that the most idiotic thing that may happen? But I think to know what happens: the phone can't find a signal due to the airplane mode, and it activates the gps service to help himself in the research. That's just some bad engineering! It's impossible to note because system GPS services are hidden, they do not show up in the upper right corner unless you specifically enable this feature: you will than find out that they activate A LOT, every time, especially frequent positions. Now, has this mess been fixed in iOS 9 or it's still there? You can try by yourselves! Thanks.