1.Check Your Devices Firewall

If your iPhone is showing "VPN状态未连接" (VPS未连接), it likely means that your device is unable to connect to another device or a server through the VPN service you're using. Here are some possible causes and solutions:

• Why it matters: Most VPN services operate within a firewall, which blocks internet traffic to prevent unauthorized access.
• How to fix:
  • Turn off your device's firewall (Windows: Windows > System > Firewall > Block & Unblock; macOS: System Settings > Privacy > Security > Firewall).
  • Enable traffic filtering in your VPN service (e.g., NordVPN, OpenVPN, etc.).

Verify VPN Service is Active

• Why it matters: Some VPN services may not be running or may have a timeout period.
• How to fix:
  • Ensure your VPN app is up to date (check the app store for updates).
  • If the app is outdated, download the latest version from the official website.

Reset Your Device

• Why it matters: A reset could clear any temporary issues with your device.
• How to fix:
  • Go to Settings > General > Reset device settings.
  • Select "Reset device and save changes" and follow the prompts.
  • Be aware that this may erase important data, so back up your files before proceeding.

Reinstall the VPN App

• Why it matters: Sometimes, app issues can cause problems with your network.
• How to fix:
  • Uninstall the VPN app (if installed on your computer).
  • Download and install the latest version from the official VPN website.

Check for Errors in the VPN Service

• Why it matters: If your device is showing "VPS未连接," it might be due to an error in the VPN service.
• How to fix:
  • Turn off Wi-Fi and network connections on your iPhone.
  • Go to your VPN service and check if the connection is being used.
  • If the connection is being used, it's likely running, but check for errors.

Try a Different VPN Service

• Why it matters: If the issue persists, try using a different VPN service to see if it works.
• How to fix:
  • Visit a VPN service website (e.g., OpenVPN.org, NordVPN).

Check Network Conditions

• Why it matters: Poor network conditions can prevent devices from connecting to a server.
• How to fix:
  • Ensure your Wi-Fi and network connections are stable.
  • Go to Settings > Network > Network Conditions and check if the connection is active.

If none of these steps work, the problem may be with your VPN service or the device itself. In that case, contact your VPN provider or support team for further assistance.