Like many others, I have Verizon's Unlimited Data Plan (UDP) that I want to keep when getting a new phone. As I understand it, I can purchase for full price a new phone, put my old sim card in it, and the plan stays the same. I hope to buy a used Verizon LG G3 from a private party or local wireless shop, insert the old sim card, and continue with the UDP. My concern is that my old phone is a Motorola Droid 2 Global from 2010. It's 3G and I don't know if the card will fit the LG G3. Do you know if it will fit and if this plan will work? Thoughts? Advice? Thank you.