[mfbadfish]

If someone gave me a old blackberry and i put my simcard in it would it work?

[dc/dc]

If it is Cingular, "New at&t" branded or SIM unlocked.

However, you will need to add a BlackBerry data plan in order for the device to function properly.

[mfbadfish]

what exactly does the data plan due i would need it to go on the internet and that stuff what if i dont need the internet

[jsconyers]

What do I need a Data Plan for? - BlackBerryFAQ

[Ginalovessharks]

The bb plan is $30 for unlimited data. $50 for data and unlimited messaging. You need a bb plan to use the email feature on your phone.