Prices in pounds · Three prices checked 6 November 2026
Three roaming in Montenegro vs a travel eSIM
In Montenegro, Three uses its Go Roam Around the World Extra prices. Here is what that costs for a long weekend, a week and a fortnight, next to a data-only travel eSIM for the same trip.
Photo : Milos Lopusina on Unsplash
Three vs eSIM in Montenegro: 3, 7 and 14 days
Three’s lowest published option in Montenegro for each trip length, next to a Graba SIM Montenegro plan with about 0.7 GB a day.
- 3 days
- 7 days
- 14 days
Three roamingGraba SIM eSIM
| Trip | Three | Graba SIM eSIM | Difference |
|---|---|---|---|
| A long weekend3 days | £17.503-day pass | £8.753GB, 15 days | The eSIM is £8.75 less |
| A week7 days | £42.007-day pass | £9.995GB, 30 days | The eSIM is £32.01 less |
| A fortnight14 days | £82.255-day pass + 3 × 3-day passes | £16.9910GB, 30 days | The eSIM is £65.26 less |
What’s included: Three: your UK calls, texts and up to 12 GB of your UK data. Graba SIM: data only, prepaid; your Three SIM stays in your phone for calls and texts. Graba SIM prices are live; Three prices checked 6 November 2026.
Sources: Three roaming (checked 6 November 2026). Prices change; check before you buy.
Graba SIM Montenegro plans: data, validity and total price
Each plan is a one-off price for one eSIM. It starts when it first connects in Montenegro, and hotspot use comes out of the same data.
Using your phone in Montenegro
- TIV Tivat
- TGD Podgorica
- DBV Dubrovnik (Croatia), for many Kotor transfers
- 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
- 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.
Going further with Three
- Croatia (Dubrovnik and the Croatian coast): Three charges £2.75 a day (Go Roam in Europe).
- Albania (the drive south to Albania): Three charges £8 a day (Go Roam Around the World Extra).
- Bosnia & Herzegovina (trips to Mostar and Trebinje): Three charges £8 a day (Go Roam Around the World Extra).
What you get for the money
Three Go Roam Around the World Extra
- £8 a day if you joined or upgraded on or after 18 December 2025; £7 a day if you joined between October 2021 and December 2025.
- Unlocks your UK calls, texts and up to 12 GB of your UK data a month.
- Three only charges on days you use your phone, but your Spend Cap has to be high enough to cover the daily charge or pass, or roaming can stop.
Graba SIM Montenegro eSIM
- 5 plan sizes for Montenegro, from 1GB, 7 days to 20GB, 30 days, each a one-off price.
- Runs on m:tel CG, T-Mobile in Montenegro.
- Data only. Your Three SIM stays on for calls and texts, so bank codes still reach you in Montenegro.
Three in Montenegro: questions
How much does Three roaming cost in Montenegro?
£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. For a trip, that is 3 days: £17.50 (3-day pass); 7 days: £42.00 (7-day pass); 14 days: £82.25 (5-day pass + 3 × 3-day passes).
Is a travel eSIM cheaper than Three in Montenegro?
It depends on the trip. Comparing Three’s lowest published option with a Graba SIM plan of about 0.7 GB a day: 3 days, the eSIM is £8.75 less; 7 days, the eSIM is £32.01 less; 14 days, the eSIM is £65.26 less. Three’s price also includes your UK calls, texts and up to 12 GB of your UK data.
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.