If your Australia eSIM is installed but mobile data is not working, the APN settings may need to be checked or entered manually. APN settings help your phone connect to mobile data correctly.
For most travelers using an Australia eSIM, the recommended APN is simple: data.esim.
Quick answer: set the APN to data.esim, leave username and password blank, enable Data Roaming for the eSIM, and select the Australia eSIM as your mobile data line.
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| Setting | Value |
|---|---|
| APN | data.esim |
| Username | Leave blank |
| Password | Leave blank |
| Data Roaming | ON for the eSIM |
| Mobile Data | Australia eSIM |
When Do You Need to Enter APN Settings?
Most phones configure APN settings automatically. However, you may need to enter the APN manually if:
- Your eSIM shows signal but mobile data does not work.
- Websites and apps do not load.
- Your phone says connected but there is no internet.
- You recently restarted or reset network settings.
- Your Android phone asks for APN details.
How to Set APN on iPhone
On iPhone, go to:
Settings → Cellular → Australia eSIM → Cellular Data Network
Then enter:
- APN: data.esim
- Username: leave blank
- Password: leave blank
If you do not see the APN field, your iPhone may be managing the settings automatically.
How to Set APN on Android
On many Android phones, go to:
Settings → Network & Internet → SIMs → Australia eSIM → Access Point Names
Then add or edit the APN:
- Name: Australia eSIM
- APN: data.esim
- Username: leave blank
- Password: leave blank
Save the APN and select it as active.
How to Set APN on Samsung Galaxy
On Samsung Galaxy phones, go to:
Settings → Connections → Mobile Networks → Access Point Names
Select the Australia eSIM, then add:
- Name: Australia eSIM
- APN: data.esim
- Username: leave blank
- Password: leave blank
Save the APN, select it, and restart your phone if needed.
Other Important eSIM Settings
APN is only one part of the setup. For your Australia eSIM to work properly, also check these settings:
| Setting | Recommended Value |
|---|---|
| Mobile Data | Australia eSIM |
| Data Roaming | ON for Australia eSIM |
| Primary SIM Data Roaming | OFF |
| Automatic Data Switching | OFF |
| Calls and SMS | Primary SIM |
What to Do After Changing APN Settings
After entering or changing the APN:
- Save the APN.
- Select it as active.
- Turn Airplane Mode on for 30 seconds.
- Turn Airplane Mode off.
- Restart your phone if needed.
- Test mobile data by opening a website.
APN Set Correctly but Still No Internet?
If APN is correct but mobile data still does not work, check the following:
- The Australia eSIM is enabled.
- The eSIM is selected for mobile data.
- Data Roaming is enabled for the eSIM.
- Automatic data switching is disabled.
- You are in an area with mobile coverage.
- Your phone is not in Airplane Mode.
Should You Reset Network Settings?
Resetting network settings can sometimes help, but it should not be the first step because it may remove saved WiFi passwords and other mobile settings.
Try APN, roaming, mobile data selection, restart, and Airplane Mode first.
Common APN Mistakes
- Typing the APN incorrectly.
- Adding spaces before or after data.esim.
- Entering a username or password when none is needed.
- Creating the APN but not selecting it.
- Leaving Data Roaming off.
- Using the primary SIM for mobile data by mistake.
Can You Keep Your Regular SIM Active?
Yes. You can usually keep your regular SIM active for calls and SMS while using your Australia eSIM for mobile data.
To avoid unexpected roaming charges, keep Data Roaming off on your primary SIM and turn it on only for the Australia eSIM.
Will WhatsApp Work After Setting APN?
Yes. Once mobile data works, WhatsApp will continue working with your existing phone number.
- Messages
- Voice calls
- Video calls
- Photo sharing
- Location sharing
- Group chats
Related Australia eSIM Guides
- Australia eSIM
- eSIM Not Working Australia
- No Internet Australia eSIM
- Why Is My eSIM Slow in Australia?
- How to Use eSIM in Australia
- How to Activate Australia eSIM
- Install Australia eSIM
FAQ: APN Settings Australia eSIM
What APN should I use for my Australia eSIM?
Use APN data.esim. Leave username and password blank.
Do I need to enter APN manually?
Not always. Many phones configure APN automatically, but manual setup may help if your eSIM has signal but no internet.
Should Data Roaming be on?
Yes. Data Roaming should be enabled for the Australia eSIM.
Why does my eSIM have signal but no internet?
The most common reasons are Data Roaming being off, incorrect APN settings, or the wrong SIM being selected for mobile data.
Should I delete the eSIM and install it again?
No. Do not delete the eSIM unless support instructs you to do so, because many QR codes can only be installed once.
Final Recommendation
If your Australia eSIM has signal but no mobile data, check the APN first. Set APN to data.esim, leave username and password blank, enable Data Roaming for the eSIM, and select the eSIM as your mobile data line.
These settings solve most APN-related eSIM issues in Australia.