I was not limiting my discussion to the US and anyway it was only an example of how things change, even if it was a bad example.
But just to be factually correct. From Wikipedia, "As of April 2014, 17 states either have not yet formally repealed their laws against sexual activity among consenting adults or have not revised them to accurately reflect their true scope in the aftermath of Lawrence v. Texas. Thirteen states' statutes purport to ban all forms of sodomy, some including oral intercourse, regardless of the participants' genders."
So technically in some jurisdictions certain types of sex that are common are also still illegal in some jurisdictions and your phone could be used to enforce these and other stupid and in my opinion overreaching laws. Now you may be able to eventually beat the charge, but you could spend time in jail and a bunch of money doing it. We have too many overreaching laws in the US.
The Patriot Act is one of the worst invasions of privacy for no benefit ever passed.
Its time to curb the government's power as much as possible before it is too late.