Most phones receive APN settings automatically, so manual entry should be used only when the installed Montenegro eSIM has no data and the field is missing or incorrect.
For NoveSIM, the APN value is data.esim.
Keep the installed profile in place; deleting it can make recovery harder and the QR code may be single-use.
Quick answer: Select the Montenegro eSIM for mobile data, enable roaming for that line and enter data.esim in the APN field if required. Leave username and password blank unless support gives different instructions.
Top Montenegro eSIMs
Montenegro eSIM
Fixed
1 GB, 7 days€ 3.552 GB, 15 days€ 5.323 GB, 30 days€ 7.10Unlimited
Unlimited, 1 day€ 3.99Unlimited, 3 days€ 8.43Unlimited, 5 days€ 12.87
Balkans eSIM
Fixed
1 GB, 7 days€ 4.442 GB, 15 days€ 7.103 GB, 30 days€ 9.32Unlimited
Unlimited, 1 day€ 4.88Unlimited, 3 days€ 11.09Unlimited, 5 days€ 17.30Check the line before editing APN
Confirm the plan is active, the eSIM is enabled and mobile-data switching is off. Follow the general APN guidance.
Enter the NoveSIM value
- Open the selected eSIM’s mobile-data settings.
- Find Cellular Data Network or Access Point Names.
- Enter data.esim as the APN.
- Leave username and password blank.
- Save, toggle airplane mode and test without Wi-Fi.
If data still fails
Use Montenegro eSIM troubleshooting and confirm the chosen Montenegro plan remains valid. Contact NoveSIM Support with screenshots.
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FAQ
What is the NoveSIM APN?
The manual APN is data.esim.
Should username and password be filled?
Leave them blank unless support instructs otherwise.
Must roaming be enabled?
Yes for many travel eSIMs.
Should I delete the eSIM?
No, preserve it for diagnosis.
Final Recommendation
Check the active line and roaming before editing APN.
Use data.esim only where manual entry is required.
Keep the profile installed while support diagnoses any remaining issue.