i m on a family share plan, i already have one blackberry with the data plan, can i add another blackberry device without being charged more money?
Unfortunatly, the answer is no. It will cost you a few dollars/month for the device to be added to the plan and an extra $29.99/month for another 3G Smartphone data plan. You can go to http://www.verizonwireless.com/b2c/store/controller?item=familyShare&action=viewFSPlanList&typeId=2&... for more information about family plans.
Great answer StreetDocRN.
You are correct in saying that adding a new line to the family share plan will be $9.99 a month to share the minutes and an additional $29.99 for the unlimited data plan if a BlackBerry or any other Smartphone device is activated with the new line.