As of 2026, just because your VPN is linked in China, it doesn't guarantee full functionality. Users often encounter challenges such as:
- Connection established, but overseas websites won’t load;
- Google functions while YouTube/ChatGPT do not;
- Browsing speed is exceedingly slow;
- Applications operate, yet websites are unresponsive;
- Mobile data is ineffective, although WiFi is working—or the other way around.
This manual outlines the most useful testing techniques to confirm whether your VPN is genuinely operational in China.
1. Initial Step: Verify Basic Connectivity
Test if you can access:
- https://www.google.com
- https://www.youtube.com
- https://chat.openai.com
If these websites do not load:
- Your DNS may be compromised;
- The server could be partially restricted;
- The connection protocol might be recognized.
2. Second Step: Assess DNS Integrity
DNS issues are among the primary reasons for connectivity failures in China.
- https://dnsleaktest.com
- https://ipleak.net
Warning signs:
- DNS servers provided by China Telecom, Unicom, Mobile;
- Discrepancy between your IP's location and the server's location.
Correction:
- Activate built-in DNS (DoH/DoT);
- Utilize SmartDNS mode.
3. Third Step: Validate Your IP Location
- https://ifconfig.co
- https://ipinfo.io
Verify:
- Your IP reflects Japan/Singapore/etc. if that was your choice;
- No alerts about “Suspicious Proxy.”
4. Fourth Step: Conduct a Speed Test
- https://fast.com
- https://speed.cloudflare.com
Typical standards:
- Basic browsing: 1–5 Mbps;
- YouTube 1080p: 5–12 Mbps;
- 4K: 15+ Mbps;
5. Fifth Step: Test Streaming Capability
- Netflix regional assessment;
- Disney+ login check;
- YouTube 4K evaluation.
If streaming encounters issues:
- Switch to nodes that support streaming;
- Adopt SmartDNS.
6. Sixth Step: Assess AI Tool Functionality
- ChatGPT functionality test;
- OpenAI interface;
- Midjourney on Discord.
7. Final Step: Verify App Performance
- Instagram / Facebook;
- WhatsApp;
- Google Maps;
- YouTube;
- Zoom.
Wrap-Up
FAQ Category
