If your China eSIM is installed but you have no internet, the issue is usually caused by mobile data settings, roaming, APN configuration, automatic data switching, weak local signal or trying to use the eSIM before arrival.
The eSIM may appear active on your phone, but mobile data will not work unless the China eSIM is selected for Mobile Data and Data Roaming is enabled on the eSIM line.
Quick answer: select the China eSIM for Mobile Data, enable Data Roaming, turn off roaming on your primary SIM, disable Automatic Data Switching, keep Network Selection on Automatic and use APN data.esim if needed.
Top China eSIMs
Quick Fix Checklist for No Internet
- Make sure the China eSIM is 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.
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 No Internet Issue
If your eSIM shows signal but mobile data does not load, APN settings may be missing. Use the following APN if manual setup is required.
| Field | Value |
|---|---|
| APN | data.esim |
| Username | Leave blank |
| Password | Leave blank |
| Authentication | None |
Why Your China eSIM Has No Internet
- The China eSIM is not selected for Mobile Data.
- Data Roaming is turned off on the eSIM.
- Your phone is using the primary SIM for data.
- Automatic Data Switching is turned on.
- APN settings are missing or incorrect.
- Network Selection is set manually.
- You are inside a building with weak signal.
- You are in a remote area with limited coverage.
- Your phone is locked or does not support eSIM properly.
- You are trying to use the plan before it connects in China.
How to Fix No Internet on iPhone
- Open Settings.
- Tap Cellular or Mobile Data.
- Tap your China eSIM.
- Make sure the eSIM line is ON.
- Turn ON Data Roaming.
- Go back to Mobile Data.
- Select the China eSIM for Mobile Data.
- Turn OFF Allow Mobile Data Switching.
- Restart your iPhone.
- Toggle Airplane Mode ON for 30 seconds, then OFF.
How to Fix No Internet on Android
- Open Settings.
- Go to Network & Internet, Connections or SIM Manager.
- Select your China eSIM.
- Make sure the eSIM line is ON.
- Turn ON Data Roaming.
- Select the China eSIM for Mobile Data.
- Turn OFF automatic data switching if available.
- Keep Network Selection on Automatic.
- Restart your Android phone.
- Toggle Airplane Mode ON for 30 seconds, then OFF.
If China eSIM Shows Signal but No Internet
If your phone shows bars or network signal but websites and apps do not load, first check that the China eSIM is selected for Mobile Data and Data Roaming is enabled.
If the problem continues, enter APN data.esim, save the settings, restart the phone and test again.
If China eSIM Shows No Service
If your phone shows No Service or no signal, move to a more open area and keep Network Selection on Automatic. Signal may be weaker indoors, in underground areas, tunnels, airports or remote locations.
Coverage may also be variable in remote regions, mountains, rural roads and long train routes.
If Apps Work on WiFi but Not on eSIM
If apps work on WiFi but not on the China eSIM, the issue is probably mobile data settings rather than the apps themselves.
Check Mobile Data selection, Data Roaming and APN settings before reinstalling apps or changing app permissions.
Important: Some Apps May Be Restricted in China
Some international apps and websites may not work normally on local Chinese internet networks. This can make it look like the eSIM has no internet, even when mobile data is working.
To test the connection, try opening several different websites or apps, including local or neutral websites, rather than checking only one restricted app.
Should Data Roaming Be On?
Yes. Data Roaming should be ON for the China eSIM. Travel eSIMs often need roaming enabled to connect to supported local networks.
Keep Data Roaming OFF on your primary SIM to avoid unwanted roaming charges from your home carrier.
Should Automatic Data Switching Be Off?
Yes. Automatic Data Switching or Allow Mobile Data Switching should usually be OFF. If it is ON, your phone may switch back to your primary SIM for mobile data.
Can You Delete and Reinstall the eSIM?
No. Do not delete your China eSIM unless you are finished using it. Deleted eSIM profiles usually cannot be reused or installed again with the same QR code.
Does WhatsApp Work If the eSIM Has No Phone Number?
WhatsApp can work with mobile data from a data-only eSIM where the app is available and the internet route allows access. Your WhatsApp account can stay linked to your existing phone number.
However, WhatsApp may be restricted on local Chinese internet networks. If WhatsApp does not load, test other apps and websites to confirm whether the issue is the eSIM connection or app access.
When the Issue May Be Coverage
| Location | Internet Expectation |
|---|---|
| Beijing, Shanghai, Guangzhou, Shenzhen | Usually strong coverage, check settings first |
| Xi’an, Chengdu, Hangzhou, Suzhou | Good to very good coverage |
| High-speed trains and tunnels | Signal may vary during travel |
| Remote mountain areas | Coverage can be variable or limited |
| Rural villages and western China | Coverage can vary significantly |
| Underground stations or basements | Move closer to open areas |
Common Mistakes That Cause No Internet
- Installing the eSIM but not selecting it for Mobile Data.
- Turning on the eSIM but leaving Data Roaming OFF.
- Keeping Automatic Data Switching ON.
- Using the primary SIM for mobile data by mistake.
- Deleting the eSIM after installation.
- Entering the wrong APN.
- Trying to use eSIM on a locked phone.
- Testing only apps or websites that may be restricted in China.
Related China eSIM Troubleshooting Guides
- China eSIM
- eSIM Not Working in China
- Install China eSIM
- How to Activate China eSIM
- How to Use eSIM in China
- China eSIM for iPhone
- China eSIM for Android
- China eSIM APN Settings
FAQ
Why do I have no internet on my China eSIM?
The most common reasons are Data Roaming being off, the wrong SIM selected for Mobile Data, missing APN settings, Automatic Data Switching, weak local signal or testing an app that may be restricted.
My China eSIM has signal but no internet. What should I do?
Select the China eSIM for Mobile Data, enable Data Roaming, turn off Automatic Data Switching and set APN to data.esim if required.
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 if China eSIM has no internet?
If manual APN setup is required for a NoveSIM China eSIM, use data.esim.
Can I delete and reinstall my China eSIM?
Usually no. Do not delete the eSIM after installation because deleted eSIM profiles often cannot be reused with the same QR code.
Why does WhatsApp not work on my China eSIM?
WhatsApp may be restricted on local Chinese internet networks. Test other websites and apps to check whether your mobile data connection itself is working.
Final Recommendation
If you have no internet on your China eSIM, first check that the eSIM is selected for Mobile Data and Data Roaming is enabled. Then turn off Automatic Data Switching, restart your phone and toggle Airplane Mode for 30 seconds.
If mobile data still does not load, keep Network Selection on Automatic and use data.esim as the APN if manual setup is required. Do not delete the eSIM unless you are finished using it.