Staying Connected in China: Travel eSIMs, Local SIMs & Wi-Fi

On a domestic Chinese network, such as hotel Wi-Fi or a Chinese SIM card, Google, WhatsApp, YouTube, Instagram, Gmail, and many international news sites are blocked.

To use essential apps like Alipay and stay in touch with family, here is how internet access works for visitors.

1. How Travel eSIMs Work

If your phone supports eSIM and is unlocked, a travel data plan bought before you fly is usually the easiest option for a short or medium trip.

Roaming data routing: Many travel eSIMs work through international roaming. Your data is routed through servers outside mainland China, in places like Hong Kong or Singapore. That's why Google, WhatsApp, and your usual apps work on cellular data without a VPN.

Not every "China eSIM" works this way. Some plans connect directly to Chinese networks, and those are blocked just like a local SIM. Before you buy, check that the plan says your data is routed outside China, or ask the seller if Google and WhatsApp work in China.

2. Things to Keep in Mind

• Hotel Wi-Fi is on the Chinese network: The roaming route only applies on cellular data. On hotel Wi-Fi, blocked sites stay blocked. The simplest fix is to turn Wi-Fi off and use your eSIM data. Some hotel Wi-Fi also sends a login code to a Chinese phone number, so ask the front desk for a room-number or password login. If you want a VPN for Wi-Fi, install it before you arrive, because VPN apps and websites are hard to get once you're in China. I don't sell, install, or recommend VPNs.
• No Chinese (+86) number: Most travel eSIMs are data-only. Alipay, WeChat, and Didi work with a foreign number, but some local apps, such as food delivery, need a +86 number to send you a code.
• Keep your home number reachable: Your bank may text a one-time code to your home number. Keep that line active with SMS roaming on, or set up your bank's app for codes before you leave.
• Maps: Google Maps may load on a roaming eSIM, but it's often inaccurate or incomplete in China. Use Apple Maps, or the map and Didi inside Alipay.

3. Do You Need a Local Physical SIM Card?

You can buy a Chinese SIM card at Guangzhou Baiyun Airport or at a carrier store in the city. Bring your passport.

When it makes sense: You're staying more than a few weeks, you make a lot of domestic calls, or you need a +86 number. Data on a local SIM is on the Chinese network, so blocked sites stay blocked. A common setup for longer stays is a local SIM for the +86 number plus a roaming eSIM for everything else.

A quick rule: Short trip, roaming eSIM. Long stay or need a +86 number, add a local SIM.

4. No Data? Check These First

• Roaming: Is data roaming switched on for the eSIM line? Is the eSIM selected as your cellular data line?
• Wi-Fi: Turn it off. Hotel Wi-Fi keeps blocked sites blocked.
• Restart: Restart the phone, then check again that your plan routes data outside China.
• Still stuck? Message me with a screenshot of what you see.