Hi guys! Today I just got a used Blackberry 8900 for my prepaid sim card from at&t! I got it just for texting and surfing the web with the wifi! I get signal in my house and my wifi words but it won't let me connect to the facebook app. It says i need a plan! With my att sim i got the unlimited text and 100mb for web just in case! Is there a way i can use the facebook app by just using the wifi? pLEASE hELp mE