Only the cost of your 3G dataplan, including possible overages.
Jailbroken: No Non-Jailbroken:Yes
Face Time Is Free as it goes over wi-fi internet connectivity. Unless jailbroken, facetime calling is disabled over 3g/mobile networks. Oliver3162
If you mean to block them sending texts to you or calling you, you would have to call up your Network Operator as there is no inbuilt blacklist on the iPhone 4. There is a way if you have your iPhone jailbroken which would be to download iBlacklist but it does cost to download it and I don't recommend jailbreaking.
The online network for PlayStation 3 does not cost money. The only money you spend is if you purchase games, themes and other stuff.
no
It is not the phone that decides the cost, it is the network, so therefore you need to ask how much it costs on a certain network!
No, PlayStation Network is free to join. Some of the content of the network, like games and movies do cost money.
Yes, signing up to Cartoon Network is free Sources: I signed up on Cartoon Network.
If you are jailbroken, blacklist is the app. If you aren't then it cost as a service by AT&T
Yes they do, any app that you want for free would have to be downloaded through installous. That is the only way to get them for free.
No. FaceTime is always free.
no its totally free. It just cost about 21 dollars if its not already installed