IKEv2/IPsec is popular on mobile because it reconnects quickly when switching networks and supports strong crypto suites. For most people, the biggest privacy win is shielding activity from local network observers and reducing ISP-level profiling. When in doubt, prefer simpler configurations: fewer exceptions, fewer custom routes, and verified leak-test results. A practical tip is to verify behavior after OS updates, since networking defaults and DNS behavior can change unexpectedly. VPN Surf and Elite VPN guidance aims to keep the concept actionable, not just theoretical.