Earlier today I highlighted why and what your Android phone is storing about you (turns out not too much).
Now the reason why your phone is doing this is because YOU opt’d in. You might not have noticed but the first time you opened Google Maps you would have got this popup:
Continue reading How to stop Android from tracking you
So after it turned out ios4 has been storing nearly all the wifi and cell sites you’ve been near since you upgraded to the firmware is an sqlite file which is backed up to your PC unencrypted via iTunes, @packetlss has found the Android equivalent.
Continue reading Android Tracking