I have an old Blackberry Curve and was on a plan that included Facebook, text (with picture capability). I never used data. Today I changed to a plan with unlimited anytime minutes and the sales person talked about "data block" to prevent me from using data. I've never had data and didn't understand how my existing phone would suddenly use it. Have I made a mistake? All I want is to phone and text and send/receive the occasional picture. Are Facebook notifications suddenly going to be using data? Would there be other things on my phone that will suddenly use data when they never did before? I'm afraid to leave the house with my phone on in case I start incurring charges.