Traveller checking mobile network availability from a Zagreb rooftop terrace.

Mobile Networks in Croatia: Operators and eSIM Selection

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

Croatia has three established mobile network operators: Hrvatski Telekom, A1 Hrvatska and Telemach Hrvatska. A travel eSIM connects through the operator or operators supported by its package rather than automatically receiving access to all three.

The Croatian network name displayed on the phone identifies the local radio connection. It does not mean that the traveller has purchased a retail contract from that operator, and another eSIM plan may use a different partner.

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

Quick answer: Croatia’s mobile networks are Hrvatski Telekom, A1 Hrvatska and Telemach Hrvatska. With a Croatia eSIM, leave operator selection automatic and use only the networks permitted by the purchased plan. Switch to manual selection only when automatic registration fails or connects to an unusable supported network.

Top Croatia eSIMs

Who Are Croatia’s Mobile Network Operators?

  • Hrvatski Telekom
  • A1 Hrvatska
  • Telemach Hrvatska

The Croatian Regulatory Authority for Network Industries, HAKOM, identifies these operators in its official mobile coverage maps. The maps show operator coverage information and are the appropriate starting point for route-level research.

Retail tariffs, prepaid offers and network footprints are separate questions. A traveller comparing local SIM cards should check each operator’s current consumer offer, while a travel-eSIM user should check the partner access stated for the specific eSIM plan.

Retail Operator versus Travel eSIM Partner Network

A Croatian prepaid SIM creates a direct retail relationship with its issuing operator. The plan, number, customer account and support process come from that local provider.

A travel eSIM is different. NoveSIM supplies the data product, while the phone registers on an authorised local partner under the package’s roaming arrangement. The local network name can appear on the handset even though the traveller did not buy that operator’s retail SIM.

This distinction matters when troubleshooting. A domestic operator’s APN, shop account or prepaid balance process does not apply automatically to the travel eSIM.

Does a Croatia eSIM Use Every Network?

No. Access depends on the current plan. Some packages may support one local network, while others may permit more than one. Do not infer access from the list of Croatian operators or from a network shown in a manual scan.

A visible network can still display Forbidden, Not Allowed or fail registration because the profile is not authorised to use it. Select only networks listed in the plan details or provided by NoveSIM support.

Why the Displayed Network Name Can Change

With automatic selection enabled, the phone can register on an authorised partner according to coverage, network availability and the eSIM profile. The displayed name may change after a restart, route change or international border crossing.

Two travellers can also see different operators because they purchased different plans, use different devices or are in different locations. A different network name is not automatically a fault.

What matters is whether the selected plan is active and the phone has a usable data session.

Use Automatic Network Selection First

Automatic selection is the correct normal setting because it lets the phone choose among the networks authorised for the eSIM. It is especially important while driving, riding a train, moving between islands or changing regions.

  1. Enable the Croatia eSIM.
  2. Select it for mobile data.
  3. Enable data roaming for the travel line.
  4. Disable automatic data switching to the home SIM.
  5. Leave network or operator selection automatic.
  6. Wait several minutes for first registration.

If the connection works, do not lock the phone to another operator in search of a different logo or 5G icon.

When Manual Network Selection Is Appropriate

Use a manual scan as a diagnostic step when:

  • the eSIM remains on No Service after basic settings and a restart;
  • automatic selection repeatedly attaches to an unusable network;
  • signal appears but mobile data fails on the current registration;
  • NoveSIM support asks you to test a named partner;
  • the plan documentation lists several supported networks to try.

Test supported networks one at a time and allow each registration attempt to finish. Restore automatic selection before changing region unless support recommends otherwise. The Croatia manual network selection guide contains the iPhone and Android steps.

What the Phone’s Network Messages Mean

Message or state Practical meaning
No Service or Searching The phone has not completed registration on an available authorised network
Forbidden or Not Allowed The visible network has rejected the profile or is not supported
Signal but no data Registration exists, but data-line, roaming, APN or plan status needs checking
4G instead of 5G Plan, device or local conditions currently favour 4G
Network name changes while moving Automatic selection or border conditions have changed registration

4G and 5G on Croatian Networks

All three factors must align for 5G: the package must permit it, the exact phone must support the required bands and usable 5G coverage must be present. A travel eSIM that works on 4G is correctly registered even when a 5G-capable handset is being used.

Keep a balanced preferred-network setting such as 5G Auto where available. Strong 4G can be more reliable than weak 5G and is adequate for maps, messages, bookings and many video calls.

The Croatia 5G guide explains plan eligibility, device settings and battery considerations.

Network Choice and Coverage Are Not the Same

Choosing an operator manually does not create coverage where no usable radio signal exists. Terrain, building materials, distance from a site and congestion still affect performance.

Cities and populated coastal areas generally present a different environment from remote islands, national parks, mountain roads and ferry routes. Consult the Croatia eSIM coverage guide for location-specific planning.

If a connection improves outdoors or after moving a short distance, the issue is more likely coverage than operator authorisation or APN.

Network Selection near Croatia’s Borders

Near Bosnia and Herzegovina, Montenegro or Serbia, a phone can detect or register on a non-EU network. Check the displayed operator after approaching or crossing a border.

A Croatia-only plan should not be assumed to work in the neighbouring country. The home SIM can also incur different roaming charges if it attaches to a non-EU operator. Use a regional plan only when every required country appears in its coverage list.

After an international crossing, automatic registration may take several minutes. Wait, toggle airplane mode once if necessary and avoid deleting the profile.

APN Settings Belong to the eSIM Provider

The NoveSIM APN is data.esim. Do not replace it with an APN copied from Hrvatski Telekom, A1 Hrvatska or Telemach Hrvatska simply because one of those names appears on the screen.

The local operator carries the radio connection, while the travel-eSIM profile determines the applicable data configuration. Check the APN only when the phone registers but mobile data remains unavailable. The Croatia APN guide explains the safe check.

Troubleshooting Network Registration

  1. Turn WiFi off.
  2. Confirm the travel eSIM is enabled and selected for data.
  3. Check roaming on the travel line.
  4. Disable mobile-data switching to the home SIM.
  5. Keep automatic selection on and wait several minutes.
  6. Toggle airplane mode once.
  7. Restart the phone once.
  8. Only then test an authorised network manually.

If registration succeeds but service is slow, do not change operators immediately. Check congestion, location, background traffic and the plan’s high-speed allowance first.

Do not delete the installed eSIM unless NoveSIM support specifically instructs you to do so. Record the visible networks, error messages, location, device model and completed steps before contacting support.

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FAQ

What are the main mobile networks in Croatia?

Croatia’s established mobile network operators are Hrvatski Telekom, A1 Hrvatska and Telemach Hrvatska.

Can a Croatia eSIM connect to all three operators?

Not necessarily. Network access depends on the purchased plan and its current partner arrangements. Use only networks listed for the package or provided by support.

Should network selection stay automatic?

Yes, automatic selection is the normal travel setting. Use manual selection only for a controlled diagnostic test when registration or data does not work.

Why does the Croatian operator name differ from NoveSIM?

NoveSIM supplies the travel data product, while the phone registers through a supported local partner network. The displayed operator name identifies that local radio connection.

Final Recommendation

Understand Croatia mobile networks as three separate operators—Hrvatski Telekom, A1 Hrvatska and Telemach Hrvatska—while treating eSIM partner access as a plan-specific matter.

Keep network selection automatic during normal travel and use manual selection only after the core data and roaming settings have been checked. Select only networks authorised for the package.

Check the displayed network near borders, preserve the provider APN and keep the installed eSIM during troubleshooting. This approach supports reliable registration without confusing the local operator with the travel-eSIM provider.

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