My VPN automatically chooses the fastest server, I can choose a different server but it usually makes it pretty slow and websites take forever to load, even when I'm not using a VPN I always use my phone so the IP would be whatever verizon assigned at the time, Verizon uses dynamic IP meaning it may be different day to day or it could be the same for months. I use Turbo VPN and it usually connects me to an east coast server wich is as far away as you can get from my location while still being a US server.