Start here
Start with two questions: can your exact phone use the plan, and do you need mobile data only or a Chinese phone number as well? Confirm both before buying.
Compare the job each option needs to do
| Option | Questions to ask |
|---|---|
| Your existing plan with roaming | Is mainland China included? What are the data, call and SMS charges? |
| A travel eSIM | Is your device compatible and unlocked? Does this plan include calls, SMS or only data? |
| A local operator’s SIM | Can you register this plan with your passport? Does your phone support it? What are the cancellation terms? |
A product called “China eSIM” does not by itself tell you whether it supplies a Chinese mobile number. Read the specific plan, not just the product title.
Check your exact device
Apple’s travel guidance says a phone must be unlocked to use another provider and recommends checking network compatibility. eSIM features vary by model and purchase region. For Android, use your manufacturer’s specifications for your exact model.
- Find the device model and check whether “Add eSIM” or the equivalent is available.
- Check any carrier lock with your existing provider.
- Ask the new provider to confirm compatibility and mainland China coverage.
- Read when the plan’s validity starts: installation, activation or first connection.
Before your flight
Save the installation instructions and support details offline. If the provider allows early installation, complete it while you have a reliable connection. Do not activate a short-validity plan early without checking its rules.
Keep access to the number your bank uses for security messages. On a dual-SIM phone, deliberately choose the line for mobile data and check whether data switching could create roaming charges.
If you land without data
- Check that the intended SIM is enabled and selected for mobile data.
- Follow the provider’s instructions for roaming and network settings.
- Restart the connection as advised by the provider; do not delete the eSIM unless support tells you to.
- Use an airport information desk or your hotel to help locate a connection if support is needed.
Prepare a saved destination card before travelling, so getting to your hotel does not depend on resolving every phone setting at the airport.