Kotor, Budva or a day trip from Dubrovnik? Montenegro uses the euro but isn’t in the EU, so check what your UK network charges before your phone crosses the border.
Graba SIM eSIM for Montenegrofrom £3.75prepaid, no contract, in pounds
5GB for 30 days£9.99enough for most two-week trips
Local networksm:tel CG, T-Mobile4G
QR code by emailinstall before you fly
Keep your UK numberdata-only eSIM
24/7 live chatin the Graba SIM app
Pay your way
Before you buy: straight answers
Which UK networks include Montenegro in roaming?
EE: EE doesn’t publish one price for every country: it prices roaming by destination, plan and start date. Check EE’s roaming tool for Montenegro. O2: £7 a day with the O2 Travel Bolt On: unlimited calls, texts and data, at up to 2 Mbps. Vodafone: Check what Vodafone charges in Montenegro in its roaming charge checker. Its European roaming passes only cover Zone B. Three: £8 a day in Go Roam Around the World Extra (£7 on plans from 2021 to 2025), or £42 for a 7-day pass. Unlocks your UK calls, texts and up to 12 GB of your UK data.
What happens on a day trip from Dubrovnik?
At the border your phone moves from a Croatian (EU) network to a Montenegrin one. Turn data roaming off for your UK SIM before you cross and use the eSIM for data.
How much data do I need for a week?
About 3 to 5 GB covers maps, messages and social media for a week on the coast.
What your trip to Montenegro costs
Set your trip length and how you use your phone. eSIM bars are data-only plans that cover the whole trip; UK network bars use your UK allowance and include calls and texts. EE and Vodafone don’t publish a price for Montenegro that we can check, so they aren’t charted.
Cost of 7 days’ mobile data in Montenegro, in pounds
For each trip we pick the current plan that costs the least while lasting the whole trip and gives about 0.3 to 0.7 GB a day, enough for maps, messages and social media. A plan may last longer than the trip. Everyone uses data differently, so check your phone’s recent data use. “Best value” only appears when that plan also costs the least per GB of all the plans that fit.
Arriving in Montenegro
TIV Tivat
TGD Podgorica
DBV Dubrovnik (Croatia), for many Kotor transfers
Many UK travellers fly to Tivat (TIV), or to Dubrovnik in Croatia and cross the border by road. On that drive your phone moves from an EU network to a non-EU one.
Signal where people go
Kotor and the bay
Strong in Kotor old town and around the bay.
Budva and the coast
Good along the Budva Riviera and in Sveti Stefan.
Durmitor and the mountains
Good in Žabljak; hiking trails and canyons have gaps.
Lake Skadar
Fine in the villages; parts of the lake are out of range.
Networks our Montenegro plans use:m:tel CGT-Mobile
Your UK network in Montenegro
Montenegro is outside the EU, so Europe roaming deals on UK plans don’t cover it. What each network publishes for Montenegro, and a week of it:
Network
What it charges
7 days
Compare
EE
Varies by plan EE doesn’t publish one price for every country: it prices roaming by destination, plan and start date. Check EE’s roaming tool for Montenegro.
Go Roam Around the World Extra £8 a day in Go Roam Around the World Extra (£7 on plans from 2021 to 2025), or £42 for a 7-day pass. Unlocks your UK calls, texts and up to 12 GB of your UK data.
Sources:EE (checked 29 October 2026) · O2 (checked 6 November 2026) · Vodafone (checked 29 October 2026) · Three (checked 6 November 2026). Prices change; check before you buy.
Graba SIM vs Airalo: the same plans, side by side
Plans with exactly the same data allowance and validity for Montenegro, both data-only and priced in pounds. Coverage and networks can differ, so check the plan details before you buy.
Montenegro uses the euro but isn’t in the EU. An EU roaming allowance on your UK plan may not cover it, so check the Montenegro row for your network on this page.
On a day trip from Dubrovnik, your phone switches from a Croatian network to a Montenegrin one at the border. Turn data roaming off for your UK SIM before you cross.
A Montenegro plan covers Montenegro only. For a Balkans road trip, check the coverage list of each plan.
Crossing a border from Montenegro?
A Montenegro plan covers Montenegro only. This is what your UK network charges next door:
Check your phone is unlocked and supports eSIM on our compatibility page.
Install the plan at home on Wi-Fi with our iPhone or Android guide.
When you land at Tivat, switch mobile data to the eSIM and turn on data roaming for it only.
Questions about Montenegro
Is Montenegro included in EU roaming?
No. Montenegro isn’t in the EU, so the EU roaming rules don’t apply there. Some UK networks include it in their own deals and others charge extra: the network table on this page shows what each publishes.
Does a Montenegro eSIM work in Croatia?
No. A Montenegro plan covers Montenegro. If you start in Dubrovnik, your UK plan or a Croatia plan covers the Croatian side.
Is a travel eSIM cheaper than roaming in Montenegro?
For a week with about 0.7 GB a day, the Graba SIM 5GB, 30 days plan costs £9.99, less than each published UK network option for Montenegro (the lowest is Three at £42.00). UK network prices include calls and texts; the eSIM is data only.
What do UK networks charge in Montenegro?
EE: EE doesn’t publish one price for every country: it prices roaming by destination, plan and start date. Check EE’s roaming tool for Montenegro. O2: £7 a day with the O2 Travel Bolt On: unlimited calls, texts and data, at up to 2 Mbps. Vodafone: Check what Vodafone charges in Montenegro in its roaming charge checker. Its European roaming passes only cover Zone B. Three: £8 a day in Go Roam Around the World Extra (£7 on plans from 2021 to 2025), or £42 for a 7-day pass. Unlocks your UK calls, texts and up to 12 GB of your UK data.
What if something goes wrong?
Live chat in the Graba SIM app is open 24/7. Email and contact-form requests are answered Monday to Friday.
