I haven’t used an iPhone in years, but Mike Anderson over at Code Fellows says that if you own an iPhone, it keeps a map of where you’ve been and a log of how long you were there. If he is correct, you can find it by following this path on your iPhone:
Preferences > Privacy > Location Services > System Services > Frequent Locations > History.
And, yes; he says you can turn it off. Get all the juicy details at Code Fellows
Founder of MobilityArena. Yomi’s journey in mobile started in 2001. Besides obsessing over mobile phones, he also started creating WAP sites (early mobile-friendly websites created with WML). He began writing about phones in 2004 and has been at it since then. He has owned over 200 devices, from Symbian, Palm, PocketPC/Windows Mobile, BlackBerry/BB10, webOS, Windows Phone, Firefox, Ubuntu Touch, to Android, iOS, and KaiOS operating systems.