Sometime in the next few weeks Apple will release a free iOS software update that:
reduces the size of the crowd-sourced Wi-Fi hotspot and cell tower database cached on the iPhone, ceases backing up this cache, and deletes this cache entirely when Location Services is turned off.
In the next major iOS software release the cache will also be encrypted on the iPhone.
Apple plans patch to address iPhone tracking concerns
Posted on Wednesday, Apr 27 2011 @ 22:21 CEST by Thomas De Maesschalck