[Clavat]

Hello all,

I'm encountering some problems with my wifi. The situation is as following:

A friend of mine gave me his BB to use. I have no data-plan and want to use it wifi only. At home I am connected to wifi, but even though it says on top of my screen it is connected with the wifi, it doesnt seem to work properly... I am getting charged for using data, which shouldn't be the case.

The thing is, I can turn off Mobile Network under connections, which allows me to use wifi only and use browser and whatsapp, however then I am not reachable through phone or text. Obviously I want to be reachable.
I tried disabling ANP, and disabling all the push-services and have 'While Roaming' on off, but this apparently doesn't do the trick either. I can't put Data services to off, because then nóthing works.
Someone suggested to look into 'Service Books' but I don't know what to do there ?

I have a BB Curve 9300 with v6.0;0;668, platform 6.6.0.236 installed on it.

Who knows how I am able to use wifi only ?
I checked other topics, but these didnt provide me with a good answer.

Hope someone can help.