其实此时龙艾宇的意识空间里早就开锅了

Cell Network Search is a location based service that sends your location information, and the tower ids of the network towers within range of (and thus detected by) your phone. It is used by Apple marketing (and whomever they choose to sell/share the database with) to determine patterns of cell useage, tower congestion and so on.
Those features in System Services are all about sending your location based information TO Apple, not about enabling features or services on your iPhone. This is Apple's way of allowing you to opt out of the collection of location based data that previously was done surriptiously without overtly letting you know or have any way to stop it.
You can disable every single feature in that section and your iPhone or iPad will continue to function exactly the same way it always has.
来源：https://discussions.apple.com/thread/3436532?start=0&tstart=0