iphone vpn里没有pptp

PPTP stands for Public Tunneling Technique in the context of iPhone VPNs. It is an advanced feature that enhances security by allowing users to set up tunnels with specific public parameters. PPTP is typically available on iPhone models 6 and above and is part of the core VPN features, often included in the standard setup or accessible through third-party services. It offers better security options and customization compared to standard tunneling methods. To use it, ensure your device meets the model requirement and consider the benefits of enhanced security and performance.