Your connection makes a difference
“Does it work?” needs one more question: on which connection? Local mobile data, a hotel’s Wi-Fi and international roaming are three different paths. Do not assume that what works on one will behave the same way on the next.
Compare mobile data options
The table shows each provider’s cheapest plan, a 5 GB plan and the shortest unlimited plan. Every price carries the date it was checked.
Yesim
CHINA- 1 GB, 30 days
- 5 GB, 30 days: $13.20
- Unlimited, 5 days: $21.60
- Speed may be reduced under the network’s fair-use policy.
Airalo
CHINA- 1 GB, 3 days
- 5 GB, 30 days: $14.50
- Unlimited, 5 days: $19.00
- Throttled to 1 Mbps after 3 GB per day.
Saily
CHINA- 1 GB, 7 days
- 5 GB, 30 days: $15.99
- Unlimited, 5 days: $22.99
- 5 GB per day at full speed, then up to 1 Mbps.
Check eSIM compatibility, carrier unlock, coverage and when validity starts. Buy and install while you have reliable Wi-Fi. Prices in US dollars, from each provider’s China page on the date shown. They change often.
Two checks, not one
First: does the network reach the service? Second: does the provider allow its use in that country or region? A connection product does not change a platform’s own terms. OpenAI publishes a list of supported countries; its page blocked an automated read today, so check it yourself before relying on it.
Do not leave essential work waiting for a new answer
If you use an AI assistant for study or work, export the notes, drafts and prompts you need in a format that opens offline. Do not plan a task that depends on generating a fresh answer once you are in China.
What the provider says about routing
Airalo’s help page says its China eSIM uses international roaming data routing, with traffic routed through gateways outside mainland China, and that this applies to eSIM data, not to hotel Wi-Fi. It also says a VPN is not required with its China, Regional Asia and Global eSIMs.
These are the provider’s own statements, not an independent test, and they do not describe every eSIM. Each plan has its own terms, and each service’s own country and account rules still apply. Read the page of the plan you intend to buy.
What about Wi-Fi and VPNs?
What holds for an eSIM’s mobile data does not carry over automatically to hotel Wi-Fi. If you are considering a VPN, read the provider’s current China support first: NordVPN’s help page covers connection problems from China and does not promise access.
Do this before you fly
- Update ChatGPT and make sure you can sign in.
- Check your account recovery method and access to your usual phone number.
- Save travel documents and essential contacts offline.
- Read the routing notes for the data plan you actually buy.
What NordVPN says about China
NordVPN publishes a support page about connecting from China. Read it before you rely on any VPN: availability there is uncertain and can change without notice. Install and sign in before you leave home.
See NordVPNNordVPN China support ↗ · Reviewed Nov 5, 2026. No VPN is guaranteed to work in China. Follow local law and the provider’s own guidance.
Questions before you go
Does ChatGPT work in China?
Airalo lists ChatGPT among AI tools that are blocked on local networks or geoblocked by their providers. Check OpenAI’s supported-countries list and plan to work offline.
Does an eSIM solve it?
Airalo says its eSIM routes data internationally, but each service’s account and country rules still apply, and the statement is not an independent test.
What should I do before I fly?
Export what you need to files that open offline and agree on a plan B for any task that depends on the tool.
Sources & review notes
- Airalo China help ↗ · Reviewed
- NordVPN China support ↗ · Reviewed
Product prices use their own dates. Provider statements are not independent connection tests. Recheck time-sensitive details before booking.