DaveNTempe, switching your devices is a breeze to do. Yes, you can use the same SIM Card from your LG V20 to your LG V30 as they both have the same size. To remove your SIM Card from the V20 click here: http://spr.ly/6583EBA3S. To insert your SIM Card from the V30 click here: http://spr.ly/6586EBA3Q.
Follow us on TWITTER @VZWSupport
If my response answered your question please click the _Correct Answer_ button under my response. This ensures others can benefit from our conversation. Thanks in advance for your help with this!!