I am attempting to switch from a BlackBerry Bold 9650 which of course is a 3G and the contract has been up for a while now (about a year, actually), to my pre-owned Droid 4 which I just bought a few days ago from a third party. Tried to activate it online at VZW and notification popped up that it is incompatible with my current data plan--which is unlimited. I was told by multiple sources that if I brought my own device to the table, as long as it was a Verizon phone I could activate it and not be forced to change my plan, which is the reason I went with this used device to begin with. Now VZW wants me to select from a tiered plan? Why? Is it because I'm going from 3G to 4G? Or because I have no SIM card? Tried to chat with a rep but "all reps are busy, try back later" so I thought I'd get input here.