Not legal advice: Install anti-spy software on your phone. You can download it using your cell phone's Internet access. Also, install a security password on your phone.
Turn off your cell phone when you’re not using it. Make sure to remove the battery as there is some cell phone spyware that is capable of converting a cell phone into a microphone and is able to pick up surrounding conversations.
You can also contact your mobile service provider and have them monitor your phone for calls or texts that don't follow your normal communication patterns. If necessary, ask your provider to wipe your cell phone's memory clean as an added precaution.
According to reports from the The New York Times and The Guardian, the NSA and its British counterpart are tapping popular smartphone apps such as Angry Birds to peek into the tremendous amounts of very personal data those bits of software collect -- including age, location, sex and even sexu@l preferences. Find out more here.