Traveller selecting a mobile network at an overlook above Kvarner Bay.

Manual Network Selection for a Croatia eSIM

NoveSIM | Last updated on: September 30, 2026 | 8 minute read

Manual network selection can help when a Croatia eSIM cannot register automatically, repeatedly connects to an unusable network or shows signal without working data. It should be a targeted troubleshooting step, not the default setting for normal travel.

Begin with automatic network selection because it allows the phone to move between supported networks as conditions change. Switch to manual mode only after confirming that the eSIM is enabled, selected for mobile data and allowed to use data roaming.

NoveSIM travel eSIMs are data-only. They do not include a Croatian number, conventional calls or SMS. Available networks, 4G, 5G and performance depend on the purchased plan, phone, location and local coverage.

Quick answer: Keep automatic selection on first. If the Croatia eSIM still has no usable service, open the travel line’s network-selection menu, disable automatic selection, wait for the scan and try only a Croatian network supported by the plan. Test mobile data with WiFi off, then return to automatic selection once registration is stable or before continuing the journey.

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When Should You Select a Network Manually?

Manual selection is appropriate when basic settings are correct but the phone has not chosen a usable network. Typical cases include:

  • the travel eSIM remains on No Service after waiting and restarting;
  • the phone registers, but mobile data does not work on the selected network;
  • the device repeatedly moves to a weak network while stationary;
  • automatic registration fails after crossing into Croatia;
  • NoveSIM support or the plan instructions identify specific partner networks to test.

Do not use manual selection simply because the phone displays 4G instead of 5G. A stable 4G connection can be entirely normal, and forcing a different network may interrupt service.

Checks to Complete before a Manual Scan

  1. Turn WiFi off so the test uses cellular data.
  2. Confirm that the Croatia eSIM is switched on.
  3. Select it under Mobile Data or Cellular Data.
  4. Enable data roaming for the travel eSIM.
  5. Disable automatic data switching and home-SIM data roaming.
  6. Wait several minutes for first registration.
  7. Toggle airplane mode once, then restart the phone if service still does not appear.

These checks solve common line-selection and registration problems without locking the device to a particular operator. Use the Croatia eSIM activation guide if the profile has not yet been activated correctly.

Which Croatian Networks May Appear?

Croatia’s mobile network operators are Hrvatski Telekom, A1 Hrvatska and Telemach Hrvatska. A manual scan may display full names, abbreviated names or numeric identifiers, depending on the handset.

Seeing an operator in the scan does not mean the eSIM is authorised to use it. The selected package may support one partner or a defined group of networks. Choose only networks listed in the current plan information or provided by NoveSIM support.

The Croatia eSIM coverage guide explains why network availability can change between cities, coastlines, islands and inland routes.

Manual Network Selection on iPhone

  1. Open Settings.
  2. Tap Cellular or Mobile Service.
  3. Select the Croatia travel eSIM.
  4. Tap Network Selection.
  5. Turn Automatic off.
  6. Wait for the list of available networks to finish loading.
  7. Select one supported network and allow time for registration.
  8. Turn WiFi off and test a lightweight webpage.

If the network rejects registration, return to the list and test another supported partner. Do not move rapidly through every visible operator; each attempt needs time to complete.

Manual Network Selection on Android

Menu wording varies by manufacturer and Android version. The general path is:

  1. Open Settings.
  2. Select Connections, Network & Internet or the equivalent mobile-network menu.
  3. Open SIMs, SIM Manager or Mobile Networks.
  4. Select the Croatia eSIM.
  5. Open Network Operators or Choose Network.
  6. Disable automatic selection or choose Search Networks.
  7. Select one supported partner and wait for registration.
  8. Test mobile data with WiFi switched off.

Samsung, Google Pixel and other Android devices can place the setting in different submenus. Confirm that the changes apply to the travel eSIM rather than the home SIM.

How to Test a Selected Network Correctly

A network name or signal icon does not prove that data works. Complete the same test after each authorised selection:

  1. Wait until the phone shows registered service.
  2. Verify that the Croatia eSIM remains the selected data line.
  3. Keep WiFi off.
  4. Open a simple webpage and refresh a map.
  5. Check whether the device’s data counter increases on the travel line.
  6. Remain on the network for several minutes before deciding that it has failed.

If one partner registers and carries data reliably, it can be used while the phone remains in that area. Re-enable automatic selection before a long drive, ferry journey or change of region unless support advises otherwise.

What Do “Forbidden” and “Unable to Register” Mean?

Forbidden, Not Allowed or a failed registration normally means that the profile cannot authenticate on that network. The operator may not be included in the plan, roaming may not be enabled or registration may be temporarily unavailable.

Do not repeatedly select a rejected operator. Return to the list and use another supported partner or automatic selection. If every supported network rejects the profile, record the displayed names and the location before contacting support.

A network may also register but provide no data. In that case, confirm the data line, roaming and APN rather than assuming the registration itself solved the problem.

Signal Bars but No Mobile Data

When the phone shows signal but a webpage does not load, work through the data path:

  1. Confirm that WiFi is off.
  2. Verify that the eSIM is selected for cellular data.
  3. Check data roaming on the travel line.
  4. Disable automatic switching to the home SIM.
  5. Check whether the plan is active and still has usable data.
  6. Verify the APN if it is missing or incorrect.

The NoveSIM APN is data.esim. Do not substitute a Croatian retail operator’s APN, and do not create several APN profiles. Use the dedicated Croatia eSIM APN guide for the device-specific check.

Why Automatic Selection Should Usually Be Restored

A manually selected network remains fixed until the setting changes or the phone loses that network. This can cause unnecessary service gaps when travelling from Zagreb to the coast, moving between islands or crossing a region where another supported partner has stronger coverage.

Automatic selection allows the profile and phone to choose among the authorised options. Restore it after the diagnostic test, before a route change and after crossing an international border. Manual mode is most useful as a controlled test in a known location.

Coverage, 4G and 5G after Manual Selection

The chosen operator still determines what radio service is available at the current location. 5G access also depends on the plan, handset bands and preferred network mode. Selecting an operator manually does not force 5G or improve the physical signal.

If data works on 4G, keep the stable connection. The Croatia 5G guide explains why the device may correctly remain on 4G even inside a city.

Information to Save before Contacting Support

  • the phone manufacturer, exact model and operating-system version;
  • the name of the installed eSIM line;
  • the city or precise travel area;
  • the networks shown in the manual scan;
  • which supported networks registered or displayed an error;
  • whether signal appeared but mobile data failed;
  • a screenshot of the line selection and APN without exposing private order details.

Keep the eSIM installed. Deleting it can remove useful diagnostic information and may prevent reuse of a single-installation QR code. Delete only when NoveSIM support specifically instructs you to do so.

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FAQ

Should I turn off automatic network selection for a Croatia eSIM?

Only as a troubleshooting step when automatic registration does not provide usable service. Automatic selection should remain the normal setting for travel and route changes.

Can I choose any Croatian network shown by the phone?

No. Select only a network supported by the purchased plan or identified by NoveSIM support. A visible network can still reject registration.

Why does a manually selected network show signal but no data?

The wrong line may be selected for data, roaming may be off, the package may not be active or the APN may be incorrect. Confirm these settings with WiFi disabled.

Should I delete the eSIM if no Croatian network works?

No. Keep the profile installed, record the scan results and contact NoveSIM support. Delete it only when support explicitly instructs you to do so.

Final Recommendation

Use manual network selection for a Croatia eSIM only after the correct data line, roaming and automatic registration checks have failed. Test supported partner networks one at a time and verify data with WiFi off.

Once a working connection is confirmed, return to automatic selection before travelling to another area unless support recommends keeping the network fixed. This allows the phone to adapt as coverage changes.

Preserve the installed eSIM, keep the APN at data.esim and record any registration errors. A careful test provides more useful evidence than repeatedly changing unrelated settings.

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