Internet in China for Tourists: VPN, WeChat Pay & Alipay

You don't need a VPN to get online in China if you're traveling on an international roaming eSIM instead of a local Chinese SIM card: roaming data routes out through your home network by design, so it lands outside mainland China's internet filtering the same way a phone call home would. That's also what makes WeChat Pay and Alipay workable for a short trip, both now accept foreign Visa, Mastercard, and other international cards directly, no Chinese bank account required. This guide covers how that roaming mechanism actually works, what it means for apps like Google, WhatsApp, and Instagram, how to get WeChat Pay and Alipay working before you land, and where a data-only eSIM like co:sim's China plan fits into the picture.

#Do you need a VPN to use the internet in China?

Not if your data connection reaches you over international roaming rather than a local Chinese network. Mainland China's internet filtering system, widely known as the Great Firewall, applies to traffic that enters and exits through domestic Chinese internet infrastructure. A local Chinese SIM card's data traffic runs through that infrastructure and is subject to it, which is why travelers using one still need a VPN to reach Google, WhatsApp, Instagram, or most Western news and social platforms.

A travel eSIM using international roaming works differently. Per GSMA's own description of how international roaming works, a roaming connection authenticates you on the local network for radio access, then routes your actual data traffic back through your home operator's network rather than treating it as domestic local traffic. Practically, that means a roaming eSIM's data usually exits the mainland Chinese internet before it reaches the open web, so it isn't filtered the way local traffic is. This is a standard feature of how international roaming has worked for decades, not a workaround specific to China or something a VPN app does instead.

#How reliable is that, and does it replace a VPN entirely?

For most travelers on a genuine international roaming eSIM, yes, in practice: Google, Gmail, Maps, WhatsApp, Instagram, and most other apps and sites blocked for domestic Chinese traffic tend to work normally without any VPN app running. It's worth being precise about why, since this gets described inconsistently online: it's a byproduct of how roaming data is routed, not a censorship exemption or legal loophole, and China's own telecoms regulator, the Ministry of Industry and Information Technology, continues to regulate eSIM and telecoms access on its own terms.

The one case where this doesn't hold is a China-local eSIM or a Chinese physical SIM, either bought locally or ordered from an international marketplace, since those run as domestic Chinese traffic regardless of who's holding the phone. If a specific eSIM listing is unusually cheap for China and doesn't mention international roaming or a foreign carrier partner, that's a sign it may be a local profile rather than a genuine roaming one, and it will not have the same effect. A co:sim China plan runs on international roaming over China Unicom, China Telecom, or China Mobile's networks rather than a local domestic SIM.

#Will WeChat Pay and Alipay work with a foreign card?

Both now accept international cards directly, a real change from a few years ago when either required a Chinese bank account. Alipay lets foreign visitors register with a passport and link an international Visa, Mastercard, American Express, JCB, Discover, or Diners Club card, no Chinese bank account required, and the app runs in English. WeChat Pay followed a similar path: according to Tencent's own announcement, the company has streamlined registration and card-linking specifically for visitors to mainland China, building on international card support it rolled out starting in 2023.

Set both up before you fly rather than at the airport: card-linking typically needs an SMS verification code sent to the phone number on file, which usually means your home number, so it's easier to complete with your regular SIM active than after you've already swapped to a China-only data connection. Fees and limits do apply and have shifted more than once, so check each app's current terms close to your trip rather than assuming last year's numbers still hold. In practice, most travelers get more mileage carrying both apps rather than just one, since smaller vendors sometimes accept only one of the two.

#What networks will your eSIM connect to in China?

China runs three major carriers: China Mobile, China Telecom, and China Unicom, all offering 4G and 5G in major cities. A co:sim China data-only eSIM connects over these same networks, the same infrastructure any domestic traveler uses, rather than a separate, lower-tier network reserved for tourists. Coverage is strong in Beijing, Shanghai, Guangzhou, Shenzhen, and other major cities, and thins out at more remote sites, the same pattern as most large countries.

#Setting up before you land in China

Install the co:sim eSIM's QR code before departure, arriving within seconds of checkout by email, and connect the moment you land rather than searching for airport Wi-Fi first. Link your Alipay and WeChat Pay foreign cards while your home SIM can still receive the verification SMS, ideally a few days before you fly, since both apps typically need that step completed once, not on every trip. Keeping your home eSIM or physical SIM active alongside co:sim's data-only China eSIM means you can still receive calls and texts on your usual number while co:sim handles the data connection, a workable combination for most short trips.

See co:sim's China eSIM plans →

If the trip also includes Hong Kong, a Greater China regional plan covers both destinations on one eSIM instead of switching profiles at the border.

#FAQ

#Do I need to download a VPN before I go to China?

Not if you're using a travel eSIM on international roaming rather than a local Chinese SIM card. Roaming data typically routes back through your home operator's network per standard GSMA roaming mechanics, so it usually exits mainland China's internet filtering the same way it would for any other country you're roaming in, meaning Google, WhatsApp, Instagram, and most sites blocked for domestic traffic tend to work normally. A co:sim China eSIM runs this way, over China Unicom, China Telecom, or China Mobile's networks as a roaming connection rather than a local profile. This only holds for genuine international roaming, not a China-local eSIM or physical SIM bought inside the country, which runs as domestic traffic and is filtered the same way any local connection is. It's a byproduct of how international roaming has always worked, not a special circumvention feature.

#Can I use WeChat Pay and Alipay in China without a Chinese bank account?

Yes, both apps now support linking an international bank card directly. Alipay accepts foreign Visa, Mastercard, American Express, JCB, Discover, and Diners Club cards after passport-based registration, and WeChat Pay offers a comparable process that Tencent has continued streamlining for inbound visitors. Card-linking usually requires an SMS verification code, so complete it before your trip while your home number is still your active SIM. Fees, transaction caps, and annual limits apply to foreign cards and have changed more than once in recent years, so check each app's current terms shortly before you travel rather than relying on older guides. Carrying both apps set up in advance, rather than just one, covers more vendors, since acceptance between the two isn't identical everywhere.

#Does co:sim's China eSIM include a phone number?

No, it's data-only, meaning it provides mobile data but not a phone number for calls or SMS over the cellular network. That covers most of what a short trip to China actually needs: maps, messaging apps, Alipay and WeChat Pay's data connection, and browsing all run over data, while your regular SIM or its own eSIM can stay active for calls and texts on your usual number alongside it. The one place this matters directly is the SMS verification step when first linking a foreign card to Alipay or WeChat Pay, since that code goes to whatever number is registered with the app, typically your home number, which is exactly why it's worth linking your cards before you swap to co:sim's China data connection rather than after landing.

#Is it legal to use international roaming in China this way?

International roaming is a standard, longstanding telecom feature, not a workaround, and China permits and regulates roaming and eSIM access through its own telecoms authority, the Ministry of Industry and Information Technology. This article describes how roaming data routing technically works, not legal advice, and rules around internet access and payment apps in China can change; Freedom House's reporting on China's internet environment is a useful, regularly updated reference if you want more detail on the current regulatory landscape before you travel. co:sim's China eSIM is a standard international data roaming product, sold and installed the same straightforward way any other destination's co:sim plan is, with nothing unusual required of the traveler buying it, and the same QR-code install process applies whether the destination is China or anywhere else on the map.

Ready to install before you land? Browse co:sim's China eSIM plans →