I've downloaded the flickr uploader & Facebook applications, but I can't sign in .
After I fill the username & password then it tells me :

(Sign In failed. Please check your username and password and try again) for flickr
(Could not connect because a data service is not available. If this continues, contact your service provider for support) for facebook

I tried to remove battery & restart then retry again but won't work.

Plz help

P.S. the operating system is 5.0.0.230 (Platfom 4.2.0.61)

Wirelessly posted (BlackBerry Curve 8900)

Do you have a BlackBerry data plan?

I'm not sure what does data plan means ? but If you mean the service package for BB
that you get from your network provider, then yes

yes i made sure that i have it !!