posted on 03/04/2013 14:59http://www.wired.com/gadgetlab/2013/04/smartphone-data-trail/ →
Simply restoring a phone to its factory settings won’t completely clear it of data. Even if you use the built-in tools to wipe it, when you go to sell your phone on Craigslist you may be selling all sorts of things along with it that are far more valuable — your name, birth date, Social Security number and home address, for example. You may inadvertently sell your old photos, nudes and all. The bottom line is, the stuff you thought you had gotten rid of is still there, if someone knows how to look.