Blackberry facebook app doesnt' let me sign in?

[Soop]

blackberry facebook app - You are currently on a service plan that does not support this application. If you want to use this application, please contact your service provider to upgrade your data plan. i bought a the new blackberry Bold 9900 and changed my sim from my HTC to the blackberry but i cannot use facebook and it worked fine on my HTC so what do i do

[borogirl]

If you have only changed your sim from your HTC, without doing anything else, then your problem is that you have not bought a Blackberry BIS plan from your network. This typically costs £5 a month, but the price varies between networks. Once you have purchased this allowance, you will have unlimited access each month to all the Blackberry services, including BBM, Blackberry Email, Blackberry App World, and all the applications in Blackberry App World. Some of the App World apps are chargeable, but the charges will be shown next to each app. Facebook is free to download, but it needs the BIS plan to run it. Please note, that the £5 is a monthly charge, and not a one off fee, and is charged on top of any call, text or data allowance. It is not the same as mobile data; it is an extra charge.