URL: https://esimworld.co.uk/sim-card/montenegro/
Buy: https://esimworld.co.uk/esim-montenegro/
Source: eSIM World (esimworld.co.uk)
Author: Nadezhda Semenova, entrepreneur, co-founder of the Trippy travel service, https://esimworld.co.uk/author/
Updated: 26 October 2026
Prices: in pounds (GBP) at the rate of 31 Oct; the site shows the rate of the day.

# Can I use my UK phone in Montenegro? Roaming, the euro myth and the eSIM option

Yes, your UK phone works in Montenegro, but only Sky charges it the same as Spain on every plan, at £2 a day. Montenegro uses the euro without being in the EU, so EE bills it as Rest of World Zone 1: £26.50 for a 7-day pass (checked on 24 October 2026, [EE price guide, 31 March 2026](https://ee.co.uk/content/dam/help/terms-and-conditions/price-plans/mobile/sim-only-price-plans/_ee-pay-monthly-standard-and-non-standard-price-guide-31st_March_2026_1.1.pdf)). The best eSIM for Montenegro is a data-only plan sized to your days: ours is £2.99 for 1 GB over 7 days.

This site is not affiliated with any of the networks mentioned here; we sell eSIMs. [How we compare](https://esimworld.co.uk/how-we-compare/)

You have four ways to stay connected: your UK network, a travel eSIM, a local SIM card or a [pocket Wi-Fi](https://esimworld.co.uk/esim-vs-physical-sim/). On Sky you may not need an eSIM: £2 a day keeps calls and texts on your UK number (checked on 24 October 2026). Elsewhere the euro is the trap. It looks like EU roaming, and the bill says otherwise.

[See our Montenegro eSIM plans](https://esimworld.co.uk/esim-montenegro/)

## Is Montenegro in EU roaming for UK networks?

No. Montenegro is not in EU roaming: it sits in no UK network's Europe zone, and Sky is the one network that charges it like Spain on every plan, £2 a day (checked on 24 October 2026). O2's list of 48 Europe Zone destinations leaves Montenegro out ([O2 EU roaming](https://www.o2.co.uk/eu-roaming)).

O2 Ultimate and Three Complete plans include it anyway. Other plans use a non-Europe zone: EE's Rest of World Zone 1, shared with the USA and Turkey, O2's Zone 2 or Tesco's Region 4. A "Europe" pass does not cover it, and Albania, Bosnia and Herzegovina, North Macedonia and Serbia share the gap ([roaming in Europe](https://esimworld.co.uk/roaming/europe/)).

## What do UK networks charge in Montenegro?

Roaming in Montenegro on UK networks costs £26.50 for 7 days on EE, £8 a day on Vodafone and Three, £7 per 24 hours of use on O2 and £2 a day on Sky (checked on 24 October 2026). Four networks charge by the MB instead, from 10p to £5.

Those five run your UK allowance on your own number. The rest sell a set amount of data or bill each MB.

| UK network | What it charges for Montenegro | Condition |
|---|---|---|
| [EE](https://esimworld.co.uk/roaming/ee/) | £5.50 for 24 hours, £26.50 for 7 days | Rest of World Zone 1, pay monthly and SIM only; 24 hours from purchase. No pass: no data, calls £2.46 a minute, texts 98p |
| [Vodafone](https://esimworld.co.uk/roaming/vodafone/) | £8 a day | Zone D, pay monthly from 11 August 2021 (£6 before) ([Vodafone roaming guide](https://www.vodafone.co.uk/newscentre/smart-living/everything-you-need-to-know-about/roaming-with-vodafone-in-2022-everything-you-need-to-know/)); PAYG: Around the World Extra, 2GB for 8 days £13.68 ([Vodafone extras](https://www.vodafone.co.uk/mobile/extras)) |
| [Three](https://esimworld.co.uk/roaming/three/) | £8 a day, or £42 for a 7-day pass | Around the World Extra, Lite and Lite+ from 18 December 2025; included in Complete ([Three Go Roam](https://www.three.co.uk/support/roaming-and-calling-abroad/roaming-abroad/go-roam)) |
| [Sky Mobile](https://esimworld.co.uk/roaming/sky-mobile/) | £2 a day | Roaming Passport Plus, 24 hours from first use; counts towards the £45 spend cap ([Sky spend cap help](https://www.sky.com/help/articles/data-roaming-spend-cap)) |
| [O2](https://esimworld.co.uk/roaming/o2/) | O2 Travel £7 per 24 hours of use; 1GB Bolt On £9 | Zone 2, pay monthly only; included in Ultimate ([O2 Travel](https://www.o2.co.uk/international/o2-travel), [O2 Bolt Ons](https://www.o2.co.uk/international/data-roaming-bolt-ons)) |
| [Talkmobile](https://esimworld.co.uk/roaming/talkmobile/) | 500MB for 1 day £5, 5GB for 8 days £20, 8GB for 15 days £30 | Zone B, World Holiday Booster, data only ([Talkmobile Booster details](https://talkmobile.co.uk/booster-details)) |
| [VOXI](https://esimworld.co.uk/roaming/voxi/) | £16 for 8 days, £26.60 for 15 days | Global Roaming Extra: 2GB with 100 minutes and texts, or 4GB with 200 of each ([VOXI Global Roaming Extras](https://www.voxi.co.uk/help/articles/what-are-global-roaming-extras-and-how-do-they-work----2cc71973-bb4a-436f-a6cd-1497441ed34d)) |
| [iD Mobile](https://esimworld.co.uk/roaming/id-mobile/) | 2GB for 1 day £5, 10GB for 5 days £20, 20GB for 10 days £35 | Roam Beyond add-on ([iD roaming](https://www.idmobile.co.uk/help-and-support/roaming)) |
| [Lebara](https://esimworld.co.uk/roaming/lebara/) | 1GB for 8 days £4, 3GB for 15 days £12 | Zone 5 add-on ([Lebara](https://www.lebara.co.uk/en/roaming/roaming-rate-finder.html)) |
| [Lyca Mobile](https://esimworld.co.uk/roaming/lyca-mobile/) | 2GB for 7 days £5, 10GB for 10 days £15 | EU Roaming Pass (42 countries, Montenegro included); PAYG, from top-up credit ([Lyca](https://www.lycamobile.co.uk/en/roaming/)) |
| [SMARTY](https://esimworld.co.uk/roaming/smarty/) | 10p/MB | Roaming 1, from an out-of-plan add-on; without one, no data outside the EU ([SMARTY price guide](https://cdn.smarty.co.uk/files/SMARTY-Price-Guide.pdf)) |
| [giffgaff](https://esimworld.co.uk/roaming/giffgaff/) | 20p/MB, or a travel add-on | Zone A; add-on prices are in the app only, not checked by us ([giffgaff roaming](https://www.giffgaff.com/roaming)) |
| [Tesco Mobile](https://esimworld.co.uk/roaming/tesco-mobile/) | £5 a MB | Region 4, pay monthly and pay as you go ([Tesco Mobile roaming](https://www.tescomobile.com/roaming)) |
| Asda Mobile | £1/MB | World Group 1 ([Asda Mobile roaming](https://mobile.asda.com/roaming-calling-abroad)) |

BT puts Montenegro in Roaming Zone 6; we hold no current BT figure, so check BT's page before you fly.

A week of daily use, our arithmetic: Sky £14; EE £26.50 on the 7-day pass (seven 24-hour passes: £38.50); Three £42 on its pass, £56 by the day; O2 Travel £49; Vodafone £56. Each keeps your UK number; our data-only plan is a different product.

## Is a travel eSIM worth it for Montenegro?

For a week of maps and messages, yes: a Montenegro eSIM from the UK is £2.99 for 1 GB over 7 days, data only, against the week's sums above. For two days in Kotor, two Sky days (£4, our sum) or one £5.50 EE pass is simpler. The best eSIM for Montenegro is the one sized to your trip.

Our GB and days plans run on the MTEL network, LTE only, with no ID check; none lists 5G, so expect 4G in Kotor and Budva. You need an unlocked [eSIM-compatible phone](https://esimworld.co.uk/esim-compatible-phones/). Install before you travel, over Wi-Fi ([how to install an eSIM](https://esimworld.co.uk/how-to-install-esim/)). The plan starts on first connection in Montenegro, so installing early costs no days.

| Plan | Data per day (our arithmetic, not a forecast) | Fits |
|---|---|---|
| £2.99, 1 GB, 7 days, data only | about 140MB a day | maps, messages, a few taxi bookings |
| £6.99, 5 GB, 30 days, data only | about 170MB a day | a longer stay, some video calls |
| £9.99, 10 GB, 30 days, data only | about 330MB a day | remote work, streaming |

Your phone's data counter after an ordinary week at home beats these averages.

Three names cover the local networks: Crnogorski Telekom, One Montenegro and m:tel. We have not checked their prices, rules or coverage; take your passport, and expect prices to differ by shop.

Montenegro SIM card vs eSIM comes down to your UK number. A [local SIM](https://esimworld.co.uk/sim-card/) replaces your UK SIM in a single-SIM phone, so bank codes by text stop arriving. A travel eSIM sits beside it: calls and texts still reach your UK number ([keeping your UK number](https://esimworld.co.uk/help/keep-your-uk-number/)), and WhatsApp runs on the travel data. [Roaming or eSIM](https://esimworld.co.uk/roaming-or-esim/) weighs the two.

Read the [Foreign, Commonwealth & Development Office (FCDO) travel advice for Montenegro](https://www.gov.uk/foreign-travel-advice/montenegro) on GOV.UK before you book.

## Montenegro, Albania and Croatia on one trip

Our Europe plan covers all three (checked on 24 October 2026); UK networks split them. Croatia costs the same as Spain on all 15 networks, Montenegro and Albania on Sky alone.

The rate changes at the border. On a day trip from Dubrovnik to Kotor your phone moves to a Montenegrin network, and on automatic selection it can switch before the checkpoint. Every UK network must send a free message when you connect abroad, with prices and the charging period, unless you opted out. That text names the rate that has just started.

For the next leg of a Balkans trip, [Albania](https://esimworld.co.uk/sim-card/albania/) has its own network table. [One eSIM for the Balkans](https://esimworld.co.uk/esim-europe/) is our Europe plan: one install, one data balance, data only. Switch data roaming off on the UK line first ([data roaming settings](https://esimworld.co.uk/help/data-roaming-settings/)).

## Frequently asked questions

### Is Montenegro in EU roaming?

No. Montenegro uses the euro but is not in the EU or in any UK network's Europe zone. Sky charges it like Spain, £2 a day, and O2 Ultimate and Three Complete include it; other plans bill it as outside Europe.

### Can I use EE in Montenegro?

Yes, with a pass. EE lists Montenegro in Rest of World Zone 1: £5.50 for 24 hours or £26.50 for 7 days. Without a pass you get no mobile data.

### What is the best eSIM for Montenegro?

A data-only eSIM installed before you travel suits a week or more; for two or three days, a pass from your own network is simpler. Our Montenegro plan runs on the MTEL network, LTE, and starts on first connection.

### Can I use my UK phone in Montenegro?

Yes, at a charge. Your UK network bills its non-Europe rate there, except Sky at £2 a day. Buy a pass first, or switch data roaming off and use a travel eSIM for data.

*Sources are linked in the text; reviewed by Nadezhda Semenova. For the terms of your own contract, check with your network.*

## Sources

- [EE price guide, 31 March 2026 (PDF)](https://ee.co.uk/content/dam/help/terms-and-conditions/price-plans/mobile/sim-only-price-plans/_ee-pay-monthly-standard-and-non-standard-price-guide-31st_March_2026_1.1.pdf)
- [Vodafone roaming guide](https://www.vodafone.co.uk/newscentre/smart-living/everything-you-need-to-know-about/roaming-with-vodafone-in-2022-everything-you-need-to-know/) and [Vodafone extras](https://www.vodafone.co.uk/mobile/extras)
- [Three Go Roam](https://www.three.co.uk/support/roaming-and-calling-abroad/roaming-abroad/go-roam)
- [Sky data roaming spend cap](https://www.sky.com/help/articles/data-roaming-spend-cap)
- [O2 EU roaming](https://www.o2.co.uk/eu-roaming), [O2 Travel](https://www.o2.co.uk/international/o2-travel) and [O2 data roaming Bolt Ons](https://www.o2.co.uk/international/data-roaming-bolt-ons)
- [Talkmobile Booster details](https://talkmobile.co.uk/booster-details)
- [VOXI Global Roaming Extras](https://www.voxi.co.uk/help/articles/what-are-global-roaming-extras-and-how-do-they-work----2cc71973-bb4a-436f-a6cd-1497441ed34d)
- [iD Mobile roaming](https://www.idmobile.co.uk/help-and-support/roaming)
- [Lebara roaming rate finder](https://www.lebara.co.uk/en/roaming/roaming-rate-finder.html)
- [Lyca Mobile roaming](https://www.lycamobile.co.uk/en/roaming/)
- [SMARTY price guide (PDF)](https://cdn.smarty.co.uk/files/SMARTY-Price-Guide.pdf)
- [giffgaff roaming](https://www.giffgaff.com/roaming)
- [Tesco Mobile roaming](https://www.tescomobile.com/roaming)
- [Asda Mobile roaming](https://mobile.asda.com/roaming-calling-abroad)
- [FCDO: Montenegro travel advice](https://www.gov.uk/foreign-travel-advice/montenegro)