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eSIM for Montenegro

Data for Kotor, Budva, Durmitor and the drive in from Dubrovnik, installed before you arrive. Montenegro is outside the EU roaming zone and on the Balkans plan and the Europe plan, so a coast trip that crosses from Croatia or on to Albania stays on one eSIM.

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The Montenegro plan covers Montenegro only.

1 GB7 days1.79€$2.09£1.59CHF 1.693 GB14 days4.49€$5.09£3.89CHF 4.295 GB30 days6.59€$7.49£5.69CHF 6.29Best value10 GB30 days10.99€$12.99£9.39CHF 10.9920 GB30 days18.99€$21.99£16.99CHF 17.9950 GB30 days41.99€$47.99£35.99CHF 39.99
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Also on the Europe plan

38 other countries share the package with Montenegro. A few of them:

AlbaniaTürkiyeGreeceItalyGermanyCroatia

Good to know

What's included, when it starts, and how to get connected.

Included countries
The Montenegro plan covers Montenegro only.
Local networks
In Montenegro your eSIM connects to m:tel — 4G/5G where the network offers it.
When validity starts
Your package starts when your phone first connects to a network at the destination — not when you install it. Crossing a border does not restart it.
Installation and activation
Install the eSIM while you still have internet — at home or on Wi-Fi. Installation does not start validity. If you already have a onesim eSIM installed, a new package is added to it — no second installation. Setup guide
Calls and texts
onesim is data-only. Calls and messages work over data in apps like WhatsApp or FaceTime; your usual SIM keeps your number.
Support and refunds
Message the onesim support team from the app or the website. If a package cannot be installed or used, the refund policy explains what applies. Refund policy
Travel notes

Practical things, honestly.

Our Lady of the Rocks and the Bay of Kotor at Perast
Phone

Montenegro is not in the EU, and an EU SIM charges its non-EU rate here.

Roam-like-at-home ends at the Croatian border. The Western Balkan operators and the EU have agreed a cap on roaming data prices rather than free roaming, and talks on extending the EU scheme to the region only opened in 2026 — until that is in force, a package is the simpler answer for a week on the bay.

Getting there

Most people arrive from Dubrovnik, and the border queue is the variable.

Tivat airport is small and right on the bay; Podgorica is the capital’s. Dubrovnik is under two hours by road, and the Debeli Brijeg border crossing can take twenty minutes or two hours in August. Hire cars need written permission to cross, and the Kotor bay road is slow and worth it; the Kamenari–Lepetane ferry across the mouth of the bay saves an hour.

Money

The euro, unilaterally, and cash in the mountains.

Montenegro uses the euro without being in the eurozone, so nothing to change from Croatia or Italy. Cards work in Kotor, Budva and the hotels; konobas in the villages, the ferry and mountain huts are cash. A tourist tax of a euro or two a night is charged on the room.

When to come

The bay in July is a cruise-ship crowd; in June and September it is a bay.

Kotor’s old town fills to the walls when the ships are in — check the cruise schedule and go up to the fortress early. May, June, September and early October are the months for the coast; Durmitor and the Tara canyon are summer for rafting and hiking, and winter for a small ski season at Žabljak.

Driving

The roads are narrow, the views are the point, and the police check speed.

The coast road and the road up to Lovćen and Cetinje are single-lane hairpins with no shoulder. Drive them in daylight the first time. Speed cameras and roadside checks are common; carry the documents and a fluorescent vest, which is required in the car.

The Ottoman houses of Berat, Albania
Coverage

Two packages cover it, and both keep going across the borders.

Montenegro is on the Balkans plan and on the Europe plan. Either covers the bay, the coast and Durmitor; the difference is where the road goes next. The Balkans plan carries on into Albania, Kosovo, Serbia, Bosnia and Herzegovina and North Macedonia; the Europe plan carries on into Croatia, Italy and the EU. A trip from Dubrovnik that ends in Tirana fits either, since Croatia and Albania are on both.

Coverage follows the local network: strong along the whole coast and around the bay, good on the main roads inland, and thin in the mountains of Durmitor and Prokletije and inside the Tara canyon, as it is for everyone.

Montenegro questions.

Answers about data, coverage and setup for Montenegro.

No. Montenegro is outside the EU and the EEA, so roam-like-at-home does not apply; a European SIM charges its non-EU rate here, capped by an agreement between the EU and the Western Balkan operators rather than free. The package on this page covers Montenegro and the countries around it — the Balkans plan for the region, the Europe plan if the trip continues into the EU.

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