internet charges

hi   my question about this phone if any one can help: it appears that it is connected to the internet all the time uploading information,, i took my facebook account off it because i'm not sure if it is charging me money for it uploading information all the time, as i dont have any unlimited internet bundles i would just liked to use it on wifi and evening and weekend as tht is free for 2 months, but the G symbol is always on and the news widgets update every half hour or so.
i no this phone is all about networking but does it cost all the time??
please could anyone tell me if it will be charging me for this or give me a little info because the book that comes with it does not help a great deal.

thankyou

Unless you paid full price for the phone.  It's also not only facebook collecting data, it is also all the news widgets and applications.  Many apps are advertisement supported and those get downloaded and displayed when running the app.  The only way to stop it is to turn off the data completely.