I know this question probably gets asked frequently, but the searching I have done has been producing inconsistent/conflicting answers. Or answers are from people that do not seem too confident about what they are saying. I currently have a fully activated Verizon iPhone 6, and I intend to purchase the SIM-Free iPhone 8. To use/activate the iPhone 8, is it really just as simple as taking the SIM out of my iPhone 6 and putting it in the new iPhone 8? Does Verizon actually need to be involved in any way? And is there anything else that would need to be done to fully dis-associate the iPhone 6 from my Verizon account before selling it or otherwise giving it away?