Traveler fixing a Montenegro eSIM with no internet connection

No Internet with Your Montenegro eSIM? How to Fix It

NoveSIM | Last updated on: July 2, 2026 | 5 minute read

Your Montenegro eSIM shows signal bars, but websites won’t load? Google Maps isn’t working? WhatsApp won’t send messages? Don’t worry—this is one of the most common travel eSIM issues and it’s usually easy to fix.

In most cases, the problem is not the eSIM itself. Instead, it’s caused by a phone setting such as Data Roaming, Mobile Data selection or APN configuration.

Quick answer: if your Montenegro eSIM has no internet, make sure the eSIM is selected for Mobile Data, enable Data Roaming, verify the APN is data.esim, leave Network Selection on Automatic and restart your phone.

Top Montenegro eSIMs

Quick Troubleshooting Checklist

Setting Correct Value
eSIM Installed Yes
eSIM Enabled Yes
Mobile Data Montenegro eSIM
Data Roaming ON
Network Selection Automatic
APN data.esim

Reason 1: Data Roaming Is Disabled

This is the most common reason why travelers have no internet after arriving.

Although many people normally disable roaming to avoid expensive charges, travel eSIMs usually require Data Roaming to be enabled on the eSIM line.

Enable roaming only for your Montenegro eSIM if your phone has multiple SIMs.

Reason 2: The Wrong SIM Is Being Used

Your phone may still be using your home SIM for mobile data.

Open your SIM settings and confirm that your Montenegro eSIM is selected for:

  • Mobile Data.
  • Internet connection.

Your primary SIM can remain selected for calls and SMS.

Reason 3: Incorrect APN

If your phone doesn’t automatically configure the APN, enter it manually.

Field Value
APN data.esim
Username Leave blank
Password Leave blank
Authentication None

Reason 4: Airplane Mode Needs Refreshing

Sometimes your phone simply needs to reconnect to the local mobile network.

  1. Turn Airplane Mode ON.
  2. Wait 30 seconds.
  3. Turn Airplane Mode OFF.
  4. Wait for the network to reconnect.

Reason 5: Restart Your Phone

Restarting your device often refreshes the network connection and solves temporary mobile data issues.

This simple step fixes many connectivity problems after activating a travel eSIM.

Reason 6: Manual Network Selection

If you’ve manually selected a mobile network, your phone may be trying to connect to an unsupported operator.

Go to Network Selection and choose Automatic.

Reason 7: You Haven’t Arrived in Montenegro Yet

Most Montenegro travel eSIMs activate only after connecting to a supported network inside Montenegro.

If you’re still in another country, mobile data may not work yet.

Recommended Phone Settings

Setting Recommended Value
Mobile Data Montenegro eSIM
Calls Primary SIM
SMS Primary SIM
Data Roaming ON
Network Selection Automatic
Automatic Data Switching OFF
APN data.esim

Can You Keep Your Home SIM?

Yes. Most Dual SIM smartphones allow you to keep your primary SIM active while using the Montenegro eSIM for mobile internet.

  • Receive calls.
  • Receive SMS verification codes.
  • Keep your existing phone number.
  • Use the eSIM for mobile data.

Does WhatsApp Work?

Yes. WhatsApp works normally once your internet connection is restored. Your account stays linked to your existing phone number.

Can You Use Hotspot?

Yes. After your eSIM connects successfully, you can share your mobile internet with a laptop or tablet using Personal Hotspot or Mobile Hotspot.

Coverage in Montenegro

Destination Coverage
Podgorica Excellent
Budva Excellent
Kotor Excellent
Tivat Excellent
Herceg Novi Very Good
Bar Very Good
Ulcinj Very Good
Durmitor National Park Variable
Tara Canyon Variable
Lovćen National Park Variable

Complete Troubleshooting Steps

  1. Restart your phone.
  2. Verify the eSIM is enabled.
  3. Select the Montenegro eSIM for Mobile Data.
  4. Enable Data Roaming.
  5. Check the APN is data.esim.
  6. Turn Airplane Mode on for 30 seconds.
  7. Leave Network Selection on Automatic.
  8. Wait several minutes for the network to register.

Common Mistakes

  • Using the home SIM for mobile data.
  • Leaving Data Roaming disabled.
  • Deleting the eSIM profile.
  • Using manual network selection.
  • Incorrect APN settings.
  • Trying to use the eSIM before arriving in Montenegro.

When Should You Contact Support?

If you’ve completed every troubleshooting step and still have no internet, prepare the following information:

  • Your phone model.
  • Your current location.
  • A screenshot of your Mobile Data settings.
  • A screenshot of the APN settings.
  • A screenshot showing your installed SIMs.

Related Montenegro Guides

FAQ

Why do I have signal but no internet?

The most common causes are disabled Data Roaming, the wrong SIM selected for Mobile Data or incorrect APN settings.

Do I need to enable Data Roaming?

Yes. Most travel eSIMs require Data Roaming to be enabled.

What APN should I use?

If manual configuration is needed, use data.esim.

Can I restart my phone?

Yes. Restarting your phone is one of the fastest ways to refresh the network connection.

Will WhatsApp work after the connection is restored?

Yes. WhatsApp automatically reconnects once your mobile data is working again.

Can I keep my regular SIM active?

Yes. Your primary SIM can remain active for calls and SMS while the Montenegro eSIM is used for mobile data.

Final Recommendation

If your Montenegro eSIM has no internet, don’t panic. In most cases, enabling Data Roaming, selecting the correct Mobile Data line, verifying the APN and restarting your phone will solve the issue within a few minutes. Once connected, you’ll enjoy reliable mobile internet throughout Montenegro while keeping your regular phone number active.

Browse Montenegro eSIM plans here.

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