Japan eSIM APN settings tell the phone how to reach mobile data through the installed plan. Most devices receive them automatically, so manual entry is only necessary when the plan instructions or NoveSIM support require it.
For a NoveSIM travel eSIM, the APN is data.esim. Do not copy an APN from a Japanese domestic operator or another eSIM provider.
NoveSIM plans are data-only. Correct APN settings enable mobile data but do not add a Japanese number, traditional calls or SMS.
Quick answer: Select the Japan eSIM for mobile data, enable its required data-roaming setting and check whether the APN is populated. If manual NoveSIM entry is needed, type data.esim exactly and leave username and password blank unless support supplies different instructions.
Top Japan eSIMs
What are the correct Japan eSIM APN settings?
| Field | NoveSIM value |
|---|---|
| APN | data.esim |
| Username | Leave blank |
| Password | Leave blank |
Use these values only for a NoveSIM profile. A plan from another provider may require different settings.
When should you change the APN?
Do not edit a working connection. Check the APN when the eSIM shows signal but mobile data does not load, or when setup instructions explicitly request manual entry.
Before changing it, confirm that the correct line is selected for data. The Japan eSIM installation guide explains the dual-SIM preparation and activation sequence.
How do you check the APN on iPhone?
- Open Settings and select Mobile Service or Cellular.
- Choose the Japan eSIM.
- Open Mobile Data Network when that menu is available.
- Enter data.esim in the mobile-data APN field.
- Leave username and password blank.
- Return to the previous screen and allow the phone time to reconnect.
Some carrier profiles hide APN editing. If the field is unavailable, do not install configuration profiles from an unrelated source; contact support instead.
How do you check it on Android?
- Open Settings and find Mobile Network, Connections or SIM Manager.
- Select the Japan eSIM and open Access Point Names.
- Add a new APN if no editable entry exists.
- Enter a clear name and set the APN to data.esim.
- Leave username and password blank, save the entry and select it.
- Toggle aeroplane mode briefly or restart the phone.
Menu labels vary by manufacturer and Android version. Avoid changing fields that the plan instructions do not mention.
What should you check if data still does not work?
- The Japan eSIM is switched on and selected for mobile data.
- Data roaming is enabled on the travel eSIM when required.
- The primary SIM is not still selected for cellular data.
- Automatic network selection is enabled unless support instructs otherwise.
- The plan is active and still has data and validity remaining.
Continue with the ordered Japan eSIM troubleshooting guide. Keep the installed profile and do not delete it unless NoveSIM support explicitly tells you to do so.
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FAQ
What is the NoveSIM APN in Japan?
The NoveSIM APN is data.esim. Enter it exactly if manual configuration is required.
Should the APN username and password be filled?
Leave both blank unless NoveSIM support provides specific values for the selected plan.
Why can I not see the APN menu?
The device or installed carrier profile may manage it automatically. Do not add an unrelated configuration profile to expose the setting.
Should I delete and reinstall the eSIM?
No. Keep the profile installed and contact support if the normal checks do not restore data.
Final Recommendation
Use data.esim for Japan eSIM APN settings when a NoveSIM plan requires manual entry.
Change only the necessary fields, then recheck the selected data line, roaming setting and plan status.
If the connection remains unavailable, preserve the installed eSIM and move to structured troubleshooting or support.