A smart phone is not needed.

FBI can turn on a phone's microphone: http://news.cnet.com/2100-1029_3-6140191.html

A German politician got a telecom company to hand over phone location data: http://blogs.dw-world.de/spectrum/?p=907

Pretty animation of phone tracking: http://www.zeit.de/datenschutz/malte-spitz-data-retention