Stay connected when you land

Who this is for

Visitors choosing how to use their phone in mainland China. The best option depends on your device, carrier and need for a local number. An eSIM is a SIM format, not a guarantee of coverage, app access or SMS service.

Compare three options

Home-carrier roaming: ask your existing carrier about mainland-China coverage, prices, data allowances and how to enable the service. Clarify the cost of keeping your home number active for messages.

A travel data plan: confirm the exact device model is supported, that your phone is unlocked where required, and that mainland China is included. Read the activation window and whether calls, SMS or hotspot use are included. Data-only plans may not provide a local phone number.

A local SIM: official guidance describes passport-based registration at Chinese telecom operators’ service offices. Ask the counter to explain the package and help verify that it works on your device before leaving.

Before departure

Write down your chosen provider’s setup instructions and support contact.
Install a travel plan only according to that provider’s timing instructions. Some plans begin their validity period when installed or activated.
Keep access to the number used by your bank and payment apps. Ask your carrier how verification messages work overseas.
Save your hotel address, transport plan and essential bookings offline.
Check with your provider whether the online services you need are accessible on that particular connection. Do not assume every network behaves the same way.

When you arrive

Select the intended data line and follow your provider’s roaming instructions. Confirm that a basic webpage loads before relying on maps or payment apps. Check that you have not accidentally selected an expensive home data plan.

If you cannot connect

Use your saved arrival pack and find an official airport information or telecom counter. Show the staff your provider’s instructions. In Shanghai, government-listed airport service centres can help with communications and other arrival questions. Access and hours should be checked locally.

An offline checklist helps you continue even when your connection does not. Prepare yours here.