A dual-SIM phone can keep the home number active while a Mauritius eSIM handles mobile data. The important step is assigning each line deliberately instead of allowing the phone to switch data automatically.
The home line may still receive calls or SMS, but the home carrier can charge for roaming activity. Keeping a number visible on the phone does not make those services free.
NoveSIM travel plans are data-only and do not add a Mauritian number or traditional calls and SMS. Messaging and calling apps can use the travel line’s data.
Quick answer: Set the Mauritius eSIM as the mobile-data line, turn on Data Roaming only for that line, turn it off for the home SIM, and disable automatic cellular-data switching. Choose separately which line should handle calls and SMS.
Top Mauritius eSIMs
Give Each Line One Clear Job
| Function | Recommended assignment | Reason |
|---|---|---|
| Mobile data | Mauritius eSIM | Uses the purchased travel allowance |
| Data roaming | On for travel line only | Travel profiles commonly need roaming to reach a partner network |
| Automatic data switching | Off | Prevents silent fallback to the home plan |
| Calls and SMS | User choice | Home-carrier roaming charges may apply |
Install and label the profile first using the Mauritius eSIM installation guide. Names such as “Mauritius Data” and “Home” make later prompts easier to interpret.
Configure the Lines on iPhone
- Open Settings and Cellular or Mobile Service.
- Open Cellular Data and select the Mauritius line.
- Turn Allow Cellular Data Switching off.
- Open the Mauritius line and enable Data Roaming.
- Open the home line and leave its Data Roaming off.
- Choose the default voice line according to the home carrier’s roaming terms.
Configure the Lines on Android
Menu names vary by manufacturer. Look under SIM Manager, Mobile Network, Network & Internet or Connections.
- Switch both required lines on.
- Set the Mauritius eSIM as the preferred SIM for mobile data.
- Disable automatic or adaptive data switching.
- Enable roaming for the travel profile and keep it off for the home profile.
- Select the preferred line for calls and SMS, or choose “Ask every time”.
After landing, use the Mauritius activation checklist and test with Wi-Fi disabled. A webpage should load while the data indicator belongs to the travel line.
Keeping the Home Number Can Still Cost Money
Incoming SMS is often useful for verification, but the price of receiving calls, making calls, voicemail forwarding or sending SMS is controlled by the home carrier. Check those terms before leaving the line active abroad.
For app-based calls, select the Mauritius line for data and use WhatsApp, FaceTime, Signal or another internet service. Its usage comes from the travel allowance. Estimate shared and calling use with the Mauritius data guide.
If the Phone Uses the Wrong Line
- Recheck the mobile-data assignment after a restart.
- Turn automatic data switching off again.
- Confirm that the travel line is enabled and registered.
- Temporarily switch the home line off to isolate the test.
- Do not delete the eSIM while diagnosing line assignment.
If the Mauritius line itself has no service, use the symptom-led troubleshooting guide rather than changing call defaults repeatedly.
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FAQ
Can I receive SMS on my home number while using eSIM data?
Usually yes when the home line remains active, but availability and charges depend on the home carrier’s roaming terms.
Which line needs Data Roaming?
Enable it on the Mauritius travel eSIM when instructed and keep it off on the home line unless you intentionally use home roaming.
Why disable automatic data switching?
It can move data to the home SIM when the travel signal weakens, potentially creating roaming charges.
Final Recommendation
Label both lines and assign data, calls and SMS separately before relying on dual-SIM operation.
Use the Mauritius eSIM for data, restrict roaming to that profile and disable automatic switching.
Check home-carrier charges for calls and messages, then test the selected data line with Wi-Fi off.