I am thinking about buying an HTC Thunderbolt to replace my Droid X. My question is, do I need to also buy a 4G SIM card? If I buy the phone off say eBay and it does not have a 4G SIM card do I just need to buy one from Verizon?
Check with the nearest Verizon corporate-owned stores (not sure if authorized dealers carry them) for availability. Supposedly, you can get them online, but I never could find the location for them. Otherwise, you can call customer service and get one sent to you. To my knowledge, there's no fee for the SIM card.
The sim cards should be free, at least if you go to a corporate store. You can also get customer care to ship you one, if you care to wait, or if you do want to pay for overnight shipping (maybe a nice rep can even waive that, like I used to.)
Just to let you know, if you move from a 4G phone to a 3G phone, the LTE sim card in your 4G phone will become "retired" in VZW's system and will never work again. So, if you move back to a 4G phone, you'll need to get a new sim card. Its inconvenient, but just a heads up.
Should receive my new Note 2 tomorrow. I currently have a 3G android phone with Verizon, and of course get only 3G service. When I go to a Verizon store to remove the 3G phone and activate the new Note 2, will they give me a 4G/LTE sim for the Note 2 free? I'm also wondering whether I would still be on 3G service, keeping my current plan, or whether I would actually, then, get 4G service.