http://www.bbc.com/news/uk-34444233
"Dreamy Smurf is the power management tool which means turning your phone on and off with you knowing," he said.
"Nosey Smurf is the 'hot mic' tool. For example if it's in your pocket, [GCHQ] can turn the microphone on and listen to everything that's going on around you - even if your phone is switched off because they've got the other tools for turning it on.
"Tracker Smurf is a geo-location tool which allows [GCHQ] to follow you with a greater precision than you would get from the typical triangulation of cellphone towers."
Once GCHQ had gained access to a user's handset, Mr Snowden said the agency would be able to see "who you call, what you've texted, the things you've browsed, the list of your contacts, the places you've been, the wireless networks that your phone is associated with.
"And they can do much more. They can photograph you".
Mr Snowden also explained that the SMS message sent by the agency to gain access to the phone would pass unnoticed by the handset's owner.
"It's called an 'exploit'," he said. "That's a specially crafted message that's texted to your number like any other text message but when it arrives at your phone it's hidden from you. It doesn't display. You paid for it [the phone] but whoever controls the software owns the phone."
Told you so! Pats flip phone
That's why I only use telegraphs these days.