Do you know what you've given that Facebook app permission to do?

[pctech]

http://uk.news.yahoo.com/facebook-s-phone-app-can-read-your-texts--make-calls-and-turn-off-wi-fi---should--you-worry-152751395.html#7FlaZJS

[Technical Ben]

"The text reading is just to read authentication texts or send customer service replies.... honest". 

[mervl]

Such a nagging nuisance (even with every privacy setting I could find turned on) that I've got rid of it. Is it anything apart from a marketing app?

[Simon]

Me too, Merv.  I only use Facebook out of necessity, for a couple of groups I'm involved with, and the app was just a PITA.  It also took up valuable storage space on my phone, so it had to go.