The most common China connectivity question starts one step too late.

“Which VPN works?” sounds practical, but it collapses several different travel setups into one product contest. A visitor using international roaming is not on the same connection path as someone using hotel Wi-Fi. A travel eSIM may behave differently from a mainland local SIM. A phone-only tourist has different needs from a remote worker who must connect a laptop and maintain account access.

When travelers report opposite results for the same service, they may not actually be contradicting each other. They may be describing different lanes.

Start with the lane

A connection lane is the path between your device and the service you are trying to reach. For travel planning, the useful lanes are:

Your home carrier’s international roaming

You keep your existing SIM or eSIM active and use your carrier’s roaming agreement. This can preserve your normal number and make account recovery easier. Cost, speed, tethering and destination behavior depend on the carrier and plan.

A travel eSIM or international data provider

This is often convenient for phone data. But the product name alone does not tell you where traffic exits, what services are reachable, whether tethering is allowed, or whether you receive a usable phone number. Many travel eSIMs are data-only.

A mainland Chinese mobile connection

A local SIM can provide local data, calls and a mainland number, which may help with services that expect one. It also places your connection inside the local network environment. Official Shanghai visitor guidance says foreign visitors can apply for SIM products at telecom outlets with a passport; the exact product and availability should be checked locally.

Hotel, café, airport or other local Wi-Fi

Shared Wi-Fi is useful but should not be your only plan. Login flows, local-number requirements, congestion and security vary. It is also a different lane from the mobile data already working on your phone.

The lane matters because access restrictions, routing, DNS behavior, account risk controls and service compatibility can appear differently across them.

Why provider lists age badly

A static ranking usually hides the variables that determine whether a setup works:

  • the traveler’s home country and carrier;
  • the exact eSIM product and traffic route;
  • phone model, lock state and eSIM support;
  • local mobile data versus local Wi-Fi;
  • phone versus tethered laptop;
  • the specific website or app being reached;
  • the date, city and time of the test;
  • account login and two-factor authentication requirements;
  • temporary blocking or service changes.

That does not make traveler reports useless. They are valuable signals for the questions people are asking and the failure modes worth testing. They are not durable proof that a named provider will work for you next month.

CH101 therefore does not turn a Reddit comment, commercial review or one successful trip into a universal recommendation.

Build two genuinely different routes

For most visitors, a resilient setup has three layers.

Primary: the lane you expect to use every day

Choose it according to the tasks that matter: maps, messaging, translation, payment, ride-hailing, booking management, work access or receiving verification codes.

Check device compatibility and carrier lock status before buying anything. Apple’s travel eSIM guidance, for example, tells users to confirm that the phone supports eSIM and is unlocked where required. Other phone manufacturers and carriers have their own compatibility rules.

Backup: a lane that fails differently

If your primary is a travel eSIM, keeping home roaming available for a short recovery session can be more useful than buying a second product with an unknown but similar route. If local Wi-Fi is essential for a laptop, retain a separate phone-data option. If your usual number receives bank codes, do not remove or disable it without understanding the consequence.

The second route does not need to be cheap enough for daily use. It needs to get you through account recovery, a booking problem or a failed primary connection.

Offline: the route with no network

Download the first hotel address in Chinese, arrival instructions, key booking confirmations, emergency numbers, a translation pack and any account-recovery information you can safely store offline.

Offline files are not a primitive substitute for internet access. They are the only connection plan with no carrier, routing or login dependency.

Where a VPN fits

A VPN can be a candidate tool for some local-network or computer-use scenarios. It is not a complete connectivity plan and should not be treated as a guaranteed universal bypass.

Before considering a provider, define the test:

  1. Which device must connect?
  2. Through which mobile or Wi-Fi lane?
  3. Which exact services must work?
  4. Do you need tethering?
  5. What happens if the account is logged out or asks for a code?
  6. What is the non-VPN backup?

Official travel advice, including the UK government’s China guidance, warns that internet access is restricted and that VPN use is subject to local regulation. Rules and enforcement context matter; “a traveler said it connected” is not legal or operational advice.

The test that matters

Test your setup on the actual devices you will carry. Do not stop at a successful speed test.

  • Open the maps and messaging tools you rely on.
  • Retrieve a hotel and train booking.
  • Confirm that payment and bank apps can complete their login path.
  • Test the laptop if the laptop matters.
  • Check whether tethering is allowed and functional.
  • Switch off the primary data route and prove that the backup is reachable.
  • Put the phone in airplane mode and open the offline pack.

Record the date, place, device and lane. Without those four details, “works in China” is an anecdote without a configuration.

Bottom line

There is no useful answer to “which VPN works?” until you know which network you will use and what job the connection must perform.

Choose the primary lane. Add a backup that fails differently. Carry the first hour of your trip offline. Then test the real tasks, not the logo on the provider’s website.

Next: use the Phone & SIM planner, then check the apps you depend on with Will My Apps Work?.