01 / Understand the two separate problems
Having data is not the same as having your apps.
The UK’s China travel advice lists Google, Facebook, YouTube and X among blocked services and notes licensing rules for online services such as VPNs. A mobile-data icon is not proof that a particular service will work. Read the FCDO’s internet-access guidance.
Your arrival plan needs a connection, access to your important accounts, and an offline fallback. Check these separately. A second data package will not redirect a bank verification code sent to your home phone number.
Does this exact plan cover mainland China and my phone model? Is it data-only, or does it include a number, calls or SMS? When does validity begin? What happens after the allowance runs out?
No provider or package has been field-tested for this guide. We do not promise that roaming, a travel eSIM or a VPN will make a specific app available.
02 / Choose your arrival connection
Match the option to the job.
Your home SIM
with roaming
Consider it when: your carrier confirms a suitable mainland package and you want to keep your existing number involved in the setup.
- Check before departure
- Mainland coverage, daily or bundle charges, data limits, calls, incoming SMS and hotspot terms.
- Easy mistake
- Leaving a home data line active without understanding the charges. Set the intended data line and carrier spending controls before arrival.
A travel eSIM
Consider it when: your exact handset is compatible and the provider confirms where and when you can install and activate the plan.
- Check before paying
- Model and carrier-lock compatibility, activation trigger, validity, data allowance, top-ups and whether calls or SMS exist at all.
- Easy mistake
- Assuming “installed” means “active,” or that a data plan supplies a usable phone number. Save the instructions and support contact offline.
A local SIM
Consider it when: you have confirmed a need for local mobile service and can visit an appropriate carrier store.
Shanghai’s official guide directs visitors to China Mobile, China Telecom or China Unicom stores with a passport to choose, purchase and register a SIM. Confirm your handset and the selected package at the store. Official setup guide.
- Easy mistake
- Making the whole arrival depend on a shop being open. Keep the hotel address and first transfer instructions offline.
Hotel or public Wi-Fi
Use it when available, but confirm the login method and any verification requirement. Do not let a booking, address or support contact exist only behind a login that itself needs a connection.
For device compatibility and the number-versus-data decision, use the SIM and eSIM setup guide.
03 / Prepare the first hour
Your phone should be useful before it connects.
Set up accounts and recover passwords while you still have your normal connection. Then run this check with Wi-Fi and mobile data switched off. The ticks below are a temporary checklist, not a network test.
The five-minute departure check
Open the actual saved files, not just the app that usually contains them.
0 of 5 ready for arrival
Keep a paper address or second accessible copy as well. Store identity and booking records privately. Prepare payments separately: data connectivity does not confirm that a card, wallet or verification step will work.
04 / Recover without guessing
What has actually stopped working?
Choose the symptom first. Record the exact error before changing settings or contacting the provider.
No mobile data anywhere
Check the selected data line, whether the package is active, its remaining allowance and its coverage. Follow that provider’s roaming or APN instructions. Use the saved address for the immediate journey. Before deleting an eSIM, ask whether it can be reinstalled or reissued.
Web pages work, but one app does not
Separate service access, login and account problems from loss of data. Try your prepared alternative for the immediate task; do not keep buying data to solve an app-specific failure. Contact the app or provider through its official support route.
A bank or wallet code does not arrive
Check which phone number the account is using and whether that line can receive the message abroad. A new data plan does not change the registered number. Use the service’s established recovery process, and never give a verification code to someone offering unsolicited help.
The map loads, but the destination looks wrong
Match the Chinese place name, district and branch against the booking. Show the hotel-confirmed Chinese address instead of translating the English name again. See the map and address guide.
05 / Arrive with a fallback
Keep the first journey simple.
After landing, check an ordinary web page, your saved destination and any SMS you genuinely need as separate tasks. If something fails, use the airport information desk or hotel’s confirmed contact to help with the immediate transfer.
Have the accommodation address ready to show, a charged phone, and a backup payment method. Our first-day checklist connects the phone setup to transport, money and hotel check-in; the translation guide gives phrases you can show without a connection.
Sources & how to use this guide
Official guidance supports the factual statements linked above. Our checklists, examples and route choices are editorial preparation advice, not provider tests or individual guarantees. Review changing requirements again for your travel dates.
- FCDO: China safety and security — UK Foreign, Commonwealth & Development Office
- A guide to setting up mobile services — Shanghai Municipal Government
Edited and reviewed on 30 October 2026. Read our editorial method.
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