Not enough laws can ever be written to protect the stupid.
Serious question: do you ever read the EULA for your phone? Whenever I update my iPhone, I get a EULA pop up, and I have to click "Agree" (twice). How about the privacy disclaimer for Facebook? Twitter? Gmail? Have you ever sought out and read the agreements for any of the games you play on your phone or any of the apps you use?
The problem with this court decision is that any third party can force you to give up your privacy if you don't pore over the metric shit ton of legalese they throw at you to use their software. These End User Licensing Agreements (EULAs) are akin to very heavily-worded signs that say "this area under constant surveillance." If you avoid any of those areas in public, which is nearly impossible anymore, you're now ceding your privacy on your phone as well.
This is bad. No entity should ever be allowed to preempt a citizen's right to privacy, but now they can. Whether you read the EULA or not, you're now subject to surveillance by the state at any time. Caveat emptor.