How can I completely clear my smartphone of all information?

What kind of information does the NSA look for in my smartphone?

• http://america.aljazeera.com/articles/2013/9/8/report-nsa-can-accessmostsmartphonedata.html

• Answer:

  They don't, you don't matter. Or the quote Person of Interest, you are considered irrelevant. Don't get me wrong, I think what the NSA and various private organizations are doing with respect to privacy is bad for all of us and should be STOPPED. However, this is the wrong question to ask. Unless you are a politician hoping to incite public fervor. To quote the article referenced in the details: The documents don't indicate that the http://america.aljazeera.com/topics/topic/organization/nsa.html is conducting mass surveillance of phone users but rather that these techniques are used to eavesdrop on specific individuals, the magazine said. The reality is the NSA's collection of meta data about who is talking to whom is far more threatening. This then is used to determine specific targets for more invasive investigation like those outlined in this article. You want to stop the abuses then stop seemingly harmless activities like collection of call logs and meta data. Now let's say you are are a person of interest. Having gone through the trouble of cracking your personal phone they are probably looking at everything and anything for something of use.