Hey guys I hope this is technically the proper forum for this. Basically I want to buy a Maxx to replace my Thunderbolt that is now broken. My question is if I get one off of Craigslist is it as simple as going to the verizon site to switch it out? I currently am using an OG droid that I was successfully able to add to my account when the tbolt broke. But going BACK to a 4g phone with a SIM card will everything work ok? Hope this makes sense to someone . Also I was able to maintain my unlimited data with the OG droid because thats what my original contract was for. Thanks and have a good day.