Do Roaming eSIMs Like Trip.com Bypass the Great Firewall in 2026? VPN Not Working Fixes

By PabloEasy mode⏱ 8 min✔ Last verified 28 October 2026

Short answer: It depends on the provider and the plan. Some travel or roaming eSIMs use international roaming routes: they connect to a Chinese mobile network for signal, but send your data through a gateway outside mainland China. On those plans, blocked apps can work on mobile data, with no VPN. Before you buy, confirm with the provider that the specific China plan routes traffic outside mainland China. Don’t assume Google, WhatsApp, Instagram or Gmail will work on every plan. An eSIM does not help on hotel or café Wi-Fi, because those are Chinese networks. Airalo explains its own approach in its help article on China access.

Is an eSIM the same as a VPN?

No. Here is the difference.

A VPN is an app you run on top of a normal Chinese connection.
A roaming eSIM (on plans that use international roaming routes) changes where your data exits. You browse as if you were abroad.

That is why a VPN can fail while an eSIM keeps working. It is also why an eSIM does nothing for you on Wi-Fi. The list of blocked apps follows Freedom House, Freedom on the Net 2025: China.

What about Trip.com’s eSIM?

Trip.com sells China eSIMs. Google and WhatsApp are generally reachable on eSIMs that route data internationally, but check the plan page before you buy.

What the plans look like:

They run on China Unicom’s 5G network. They are data-only, with no Chinese phone number and no SMS.
Example plans (prices as of early September 2026; they change):
- 7 days, 3 GB/day: about $8.81
- 7 days, 100 GB/day, capped at 10 Mbps: about $13.13
- 15 days, 3 GB/day: about $16.59
On the 3 GB/day plans, once you use up the 3 GB, speed drops to 384 kbps for the rest of that 24-hour period. The 100 GB/day plan has a flat 10 Mbps cap all day instead.
You must activate the plan within 60 days of booking. Plans can be renewed.
Free cancellation is available until 00:00 on the day before the plan expires.
Hotspot support is not confirmed. Check the plan page.

One thing to watch: Trip.com’s own eSIM guide describes its plans as running on China Mobile, with prices from about $0.49 (1 day, 500 MB/day), $5.45 (10 days, 1 GB/day) and $8.35 (15 days, 1 GB/day). The carrier shown varies by product, so read the plan page before buying.

The official website is www.trip.com. The official app is called Trip.com: Book Flights, Hotels, published by Trip.com Travel Singapore Pte. Ltd. on the App Store. It has the same name on Google Play.

Before you buy any plan from any seller, check these on the plan page, or ask the seller:

That the plan routes traffic outside mainland China. Ask support if the page doesn’t say.
It names China Unicom, China Mobile and/or China Telecom.
The daily cap. Many “unlimited” plans slow down after a daily limit.
Hotspot rules.
Top-ups in the app.
The refund policy if it doesn’t connect.

For plan sizes, prices and providers, see our main guide: Best eSIM for China.

Before you start

A compatible phone. Check your exact phone model, country or region variant, carrier lock status, and eSIM provider compatibility before buying. iPhone XS, XS Max, and XR or later support eSIM in many regions, but availability varies by model and region; Apple notes that iPhones sold for mainland China generally do not support eSIM. See Apple’s eSIM support page.
An unlocked phone. A carrier-locked phone can’t use another provider’s eSIM.
Installation instructions. Check your provider’s current installation instructions before travel. If the provider requires an internet connection to install or activate the eSIM, arrange Wi-Fi access before relying on it in mainland China.
The eSIM installed before you enter mainland China, if your provider’s instructions say so.

Step by step: make it work

Install the eSIM (iPhone)

Go to Settings > Cellular > Add eSIM.
On the Set Up Cellular screen, choose Use QR code.
Scan the code and wait for activation.
Tap Continue on the Cellular Setup Complete screen.

On Android, follow your provider’s own install steps.

Set it up for data

While abroad, you can use a travel eSIM by itself or as a second line next to your home line. If you keep both lines on, the travel eSIM is used for mobile data. You might still pay roaming fees from your home line, so turn off data roaming on that one.

In Settings > Cellular, tap the travel eSIM under SIMs (or Cellular Plans).
Make sure Turn On This Line is on.
Switch on Data Roaming for that line. A travel eSIM connects as a guest on a local network, which counts as roaming. If Data Roaming is off for that line, the phone can block its data. Roaming is a per-line setting, so your home line can keep it off.
Go to Settings > Cellular > Cellular Data and select your travel eSIM. Keep Allow Cellular Data Switching off.
Keep your home line as the default voice line if you want to keep using your number for calls and texts.
Turn off Wi-Fi when you need blocked apps.

If it doesn’t work

Problem	Why	Fix
Google or WhatsApp work on mobile data but not at the hotel	Hotel and café Wi-Fi are Chinese networks	Turn Wi-Fi off and use eSIM data
Blocked apps don’t load on mobile data	Data roaming is off, the phone is using another line, or your plan may not route traffic outside mainland China	Enable data roaming on the eSIM line. Set it as the mobile data line. Turn off data roaming on your home SIM and turn off iOS Cellular Data Switching. Ask the provider whether your specific plan routes outside mainland China
You can’t install or activate the eSIM in China	Some providers need an internet connection to install or activate	Check your provider’s current installation instructions. Arrange Wi-Fi access before relying on it in mainland China. For help, contact the provider’s support
Data is very slow	Some plans slow down after a daily cap, or the signal is weak	Read the fair-use line. Top up in the provider’s app if needed. Try China Unicom and switch between 5G and LTE depending on signal
Signal keeps dropping	The phone keeps hopping between networks	Lock to one carrier, set LTE mode and turn off Wi-Fi Calling on your home SIM
The eSIM won’t connect	Could be the plan, the network or the phone	Choose the network manually (see below). Check your phone isn’t carrier-locked. If it still fails, contact the provider and ask for a refund under their policy
Your VPN keeps dropping	A VPN runs over a Chinese connection, and it can be disrupted	See the VPN tips below

Choose the network manually

iPhone: go to Settings > Cellular > your eSIM line > Network Selection. Turn Automatic off and wait 10–30 seconds. Then pick China Mobile. China Unicom is the next option.
Android: go to Settings > Connections > SIM Manager (or Network & Internet) > Mobile Networks > Network Operators. Turn off Select Automatically and pick China Mobile.
If the list stays empty, move near a window and wait a few minutes. If it is still empty after about 60 seconds, toggle Airplane Mode on and off.

If your VPN keeps dropping on a roaming eSIM

Try a different protocol. Start with WireGuard, then OpenVPN over TCP port 443, then obfuscated protocols.
Try a different server location, such as Japan, South Korea or the US West Coast, rather than Hong Kong.
Install your VPN before you arrive. App stores in China may hide VPN apps.

FAQ

Do I still need a VPN if I have an eSIM?

It depends on your plan. If the provider confirms the plan routes traffic outside mainland China, you may not need one for blocked apps on mobile data. Wi-Fi is the exception. A VPN is only a plan B there. Check before you go that your VPN works.

Is using a travel eSIM legal in China?

We could not verify a current official rule specifically addressing foreign travel eSIMs; check your home carrier and the plan provider for applicable terms and local requirements.

Will it work in Hong Kong and Macau too?

Only if the plan says so. They are often sold as separate destinations. Pick a “China + HK + Macau” plan if you are visiting all three.

Do I need a Chinese number?

Usually not for the payment and travel apps. Alipay and WeChat allow account registration using a foreign or Chinese phone number, subject to the app’s prompts. For 12306, follow the current account and ticketing instructions; the railway says foreign passengers may provide a verified email address for contact details (12306 notice). A few local apps and restaurant queue systems want a +86 number. A dual-SIM setup solves that: local SIM for the number, eSIM for data.

Where to buy

Commonly used for China: Airalo, Yesim, Trip.com, Holafly, Nomad, Jetpac, Saily and Ubigi. Prices change often, so compare on the day you buy. (Airalo and Yesim are affiliate links.)

Official apps:

Airalo: the app is called Airalo: eSIM Travel & Internet. You buy, install and top up in it. App Store · Google Play. Official site: airalo.com.
Yesim: on the App Store it is Yesim: eSIM & Mobile Internet (App Store). On Google Play it is listed as eSIM Mobile Data by YESIM (Google Play). Official site: yesim.app.

Still stuck?

Do it yourself with the steps above, or get help from a real person.

Sources: Freedom House, Freedom on the Net 2025: China; Apple: eSIM support; Airalo help: China access; 12306 notice; Airalo; Yesim; Trip.com; our guide Best eSIM for China. Some links are affiliate links — see our disclosure.