If you are traveling to China, activating your eSIM correctly helps you get mobile data after landing without buying a physical SIM card or using expensive roaming.
A China eSIM should usually be installed before departure while connected to WiFi. After arrival in China, you activate mobile data by selecting the eSIM for Mobile Data, enabling Data Roaming and keeping Network Selection on Automatic.
Quick answer: install your China eSIM before travel, then after landing turn on the eSIM, select it for Mobile Data, enable Data Roaming and use APN data.esim if manual setup is required.
Top China eSIMs
Before You Activate China eSIM
| Requirement | Why It Matters |
|---|---|
| eSIM-compatible phone | Your phone must support eSIM installation |
| Unlocked device | Carrier-locked phones may reject travel eSIMs |
| WiFi connection | Needed to install the eSIM profile |
| Installed eSIM profile | The eSIM must be added before it can be used |
| China arrival | Mobile data usually starts after connecting to a supported local network |
Install First, Activate After Arrival
For most travelers, the best process is simple:
- Install the China eSIM before departure while connected to WiFi.
- Keep your primary SIM active for calls and SMS.
- After landing in China, turn on the China eSIM.
- Select the China eSIM for Mobile Data.
- Enable Data Roaming on the China eSIM.
- Turn off Data Roaming on your primary SIM.
How to Activate China eSIM on iPhone
- Open Settings.
- Tap Cellular or Mobile Data.
- Select your China eSIM.
- Turn the eSIM line ON.
- Enable Data Roaming.
- Go back to Mobile Data.
- Select the China eSIM for Mobile Data.
- Turn off Allow Mobile Data Switching.
- Keep your primary SIM for calls and SMS.
- Wait a few minutes for the network connection.
How to Activate China eSIM on Android
- Open Settings.
- Go to Network & Internet, Connections or SIM Manager.
- Select your China eSIM.
- Turn the eSIM line ON.
- Enable Data Roaming on the China eSIM.
- Select the China eSIM for Mobile Data.
- Turn off automatic data switching if available.
- Keep Network Selection on Automatic.
- Keep your primary SIM for calls and SMS.
- Wait a few minutes for the network connection.
Recommended China eSIM Settings
| Setting | Recommended Value |
|---|---|
| Mobile Data | China eSIM |
| Calls | Primary SIM |
| SMS | Primary SIM |
| Data Roaming on eSIM | ON |
| Data Roaming on Primary SIM | OFF |
| Automatic Data Switching | OFF |
| Network Selection | Automatic |
| APN | data.esim if required |
APN Settings for China eSIM Activation
Most phones configure APN settings automatically. If your China eSIM is installed and roaming is enabled but mobile data does not work, enter the APN manually.
| Field | Value |
|---|---|
| APN | data.esim |
| Username | Leave blank |
| Password | Leave blank |
| Authentication | None |
When Does China eSIM Activate?
Your eSIM profile can be installed before travel, but mobile data usually starts working after arrival in China when your phone connects to a supported local mobile network.
To avoid problems, install the eSIM before your trip but turn on mobile data and roaming after landing.
Should Data Roaming Be On?
Yes. Data Roaming should be ON for the China eSIM. This allows the eSIM to connect to supported local networks in China.
Keep Data Roaming OFF on your primary SIM if you want to avoid roaming charges from your home carrier.
Should Automatic Data Switching Be On?
No. Automatic Data Switching or Allow Mobile Data Switching should usually be OFF. This helps prevent your phone from switching back to your primary SIM for mobile data.
Can You Keep Your Main SIM Active?
Yes. Most Dual SIM phones allow you to keep your main SIM active while using your China eSIM for mobile data.
- Use China eSIM for internet.
- Keep your primary SIM for calls and SMS.
- Receive verification codes if supported by your carrier.
- Turn off roaming data on your primary SIM.
- Keep WhatsApp or messaging apps linked to your existing number where available.
Does WhatsApp Work After Activating China eSIM?
WhatsApp may not work normally on local Chinese internet networks because some apps and services can be restricted. A China eSIM gives you mobile data, but app access can still depend on network routing, local restrictions and your specific plan.
Your WhatsApp account can remain linked to your existing phone number, even if your China eSIM is data-only.
Can You Use Hotspot After Activating China eSIM?
Yes. Most smartphones allow hotspot sharing with an eSIM where mobile coverage is available. This can be useful if you want to share internet with another phone, tablet or laptop.
Hotspot can use data quickly, especially with streaming, video calls, cloud sync or multiple devices.
How Long Does Activation Take?
After landing and enabling the correct settings, your China eSIM may connect within a few minutes. If it does not connect immediately, restart your phone or turn Airplane Mode ON for 30 seconds, then OFF.
Common China eSIM Activation Problems
- Data Roaming is not enabled on the China eSIM.
- The wrong SIM is selected for Mobile Data.
- Automatic Data Switching is turned on.
- The phone is set to manual network selection.
- APN settings are missing.
- The phone is in an area with weak signal.
- The phone does not support eSIM.
- The phone is carrier-locked.
- The eSIM was deleted after installation.
- Some apps or websites are restricted on local internet.
What to Do If China eSIM Does Not Activate
- Check that the China eSIM is installed and turned ON.
- Select the China eSIM for Mobile Data.
- Enable Data Roaming on the China eSIM.
- Turn off Data Roaming on your primary SIM.
- Turn off Automatic Data Switching.
- Restart your phone.
- Turn Airplane Mode ON for 30 seconds, then OFF.
- Keep Network Selection on Automatic.
- Set APN to data.esim if required.
- Move closer to a window or open area if signal is weak.
Activation Tips for Airports in China
If you arrive at Beijing, Shanghai, Guangzhou, Shenzhen, Chengdu, Xi’an or another major airport in China, turn off Airplane Mode after landing and wait a few minutes for your phone to register on a local network.
If mobile data does not start inside the terminal, move closer to a window or outside the arrival area, then restart your phone or toggle Airplane Mode.
Best Apps to Prepare Before China Travel
- Download offline maps before departure.
- Install translation apps before arrival.
- Save hotel addresses in English and Chinese.
- Screenshot booking confirmations.
- Save train, flight and transfer details offline.
- Check which messaging and payment apps you will need.
- Keep emergency contacts saved offline.
- Install your eSIM before leaving home.
Related China eSIM Guides
- China eSIM
- Install China eSIM
- China eSIM for iPhone
- China eSIM for Android
- Does My Phone Support eSIM in China?
- How to Use eSIM in China
- China eSIM APN Settings
- eSIM Not Working in China
FAQ
How do I activate China eSIM?
After landing in China, turn on the eSIM, select it for Mobile Data, enable Data Roaming and keep Network Selection on Automatic.
Should I activate China eSIM before travel?
You should install the eSIM before travel while connected to WiFi, but mobile data is usually activated after arrival in China.
Do I need Data Roaming for China eSIM?
Yes. Data Roaming should be enabled on the China eSIM. Keep roaming off on your primary SIM to avoid unwanted charges.
What APN should I use for China eSIM activation?
If manual APN setup is required for a NoveSIM China eSIM, use data.esim.
Why is my China eSIM installed but not working?
Most issues happen because Data Roaming is off, the wrong SIM is selected for Mobile Data, APN settings are missing or the phone has weak signal.
Can I delete my China eSIM after activation?
No. Do not delete the eSIM unless you are finished using it. Deleted eSIM profiles usually cannot be reused.
Final Recommendation
To activate your China eSIM correctly, install it before departure while connected to WiFi. After landing, select the China eSIM for Mobile Data, enable Data Roaming, turn off roaming on your primary SIM and keep Network Selection on Automatic.
If mobile data does not start automatically, restart your phone, toggle Airplane Mode for 30 seconds and use data.esim as the APN if manual setup is required.