One Crna Gora review

Updated September 30, 2026 · TariffCue Editorial Team · Facts checked September 30, 2026

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Our verdict

One Crna Gora is a single-market network selling its own contract and prepaid tariffs, which suits readers who want a large monthly data allowance and a fair-use roaming setup without shopping across providers. Entry sits at €18.99 a month on One Super M, and the whole range runs on 5G with an eSIM option.

Key facts

Best for
Readers in the home market who want a network's own 5G and eSIM service on a contract or prepaid tariff.
Seller type
Network (Source, checked September 30, 2026)
SIM-only
Yes (Source, checked September 30, 2026)
Price from
€18.99 (Source, checked September 30, 2026)
Reference plan prices
One Super M: 18.99 EUR per month, 50 GB, 12-month contract | One Ultra: 26.99 EUR per month, unlimited, 12-month contract | One Super M: 18.99 EUR per month, 50 GB, 12-month contract (Source, checked September 30, 2026)
Unlimited plan price
€26.99 (Source, checked September 30, 2026)
5G
Yes (Source, checked September 30, 2026)
eSIM
Yes (Source, checked September 30, 2026)
EU roaming
Fair use (Source, checked September 30, 2026)
Roaming countries
30 (Source, checked September 30, 2026)
Data rollover
No (Source, checked September 30, 2026)
Markets
ME (Source, checked September 30, 2026)
Legal entity
One Crna Gora DOO (Source, checked September 30, 2026)
Headquarters
Montenegro (Source, checked September 30, 2026)
Support channels
Phone, Chat, Help-centre (Source, checked September 30, 2026)
Billing
Contract, Prepaid
Contract length
12, 24
Official website
1.me

Apps and profiles

Get the app
App Store
Elsewhere
WikidataWikipediaLinkedInX

Pros and cons

Pros

  • One Super M gives a large capped data allowance at €18.99 per month, and One Ultra is unlimited at €26.99, so the step up to unlimited data is a modest one.
  • An eSIM is available and the range runs on 5G, so a new line or a swapped handset can move on a digital profile.
  • Roaming covers 30 countries on a fair use basis, so part-year travel does not need a second provider.
  • Billing covers contract and prepaid through contract and prepaid, so a short stay and a long commitment can sit with the same operator.

Cons

  • Data rollover is listed as no, so data left over in a capped month does not carry into the next.
  • Roaming is fair use rather than included, so heavy use in a single country abroad can cost more than the monthly fee suggests.
  • Contract terms of 12 and 24 months run long, where yesss! bills on contract, rolling and prepaid and covers a rolling term.
  • The entry price ranks at 235 of 258 brands compared, which places the One Super M rate in the middle of the field.
One Crna Gora

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Scored 8.6 / 10 by TariffCue.

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Who it suits

  • Readers who want the operator's own network and are content to plan on 5G with an eSIM.
  • People who want the choice between a contract and a prepaid tariff, since contract and prepaid covers both.
  • Travellers who need coverage in 30 countries on a fair-use basis rather than staying inside the home market.

Who should look elsewhere

  • Anyone who counts on unused data carrying into the next month, since data rollover is listed as no.
  • Readers who want a rolling monthly term and no fixed commitment, where yesss! bills on contract, rolling and prepaid.
  • Shoppers after the lowest entry price, where Lonestar Cell MTN lists plans from $0.20.

Core features

Sim only tariffs are available, and the range runs on 5G with an eSIM option, so a new line can be activated on a digital profile. Roaming reaches 30 countries, which is the part that matters for anyone spending part of the year abroad. Data rollover is listed as no, so data left over in a capped month does not carry into the next. Together it is a lean setup that suits readers who know roughly what they use and want nothing carried between months.

How it compares on our data

On entry price, One Crna Gora sits at 235 of 258 brands compared, which places it in the middle of the field rather than at the sharp end. The unlimited price tells a different story: 110 of 173. Read together, the two rankings point the same way a reader would, which is that this brand is worth a look for what sits inside the plan rather than for the cheapest way in.

Plans and prices

The range pairs a capped plan with an unlimited one. One Super M is the capped plan at €18.99 per month, and One Ultra is the unlimited plan at €26.99 per month, so the step up to unlimited data is the gap between those two figures. Both are sold on a contract term rather than a rolling monthly bill, so the headline figure is the monthly cost for that whole term, and the value sits in the allowance rather than in a low entry rate.

The company behind it

The brand trades as One Crna Gora DOO, based in Montenegro. Support runs on phone, chat and help centre, so phone, chat and a help centre are all open routes rather than a single inbox. Readers weighing an operator against a reseller should note that the support here comes from the network company itself, which keeps the number of parties in any billing dispute down to the one the customer signed with.

How One Crna Gora compares

Where One Crna Gora is available

Available
Montenegro

Countries from the brand (Source, checked September 30, 2026)

Frequently asked questions

What does the entry plan cost and what is on it?+

One Super M is the capped plan and starts at €18.99 per month. The unlimited option, One Ultra, sits at €26.99 per month. Both are sold on a contract term, so the monthly figure is what you pay for the length of that term rather than a rate you can walk away from once a month has passed.

How long is the contract?+

Contract terms run 12 and 24 months, which is the main thing to weigh before signing up here. Readers who want to leave sooner may prefer an option that bills on a rolling basis. The choice of contract and prepaid also means a prepaid tariff is available for anyone who would rather avoid a term altogether.

Does unused data roll over to the next month?+

Data rollover is listed as no, so anything left over in a capped month does not carry into the following one. That makes the plan suit steady users who know roughly what they need, rather than anyone whose usage swings from month to month. Readers who regularly underuse a large allowance should weigh that before committing to a contract term.

What does roaming cost when I travel?+

Roaming reaches 30 countries, and the arrangement is fair use rather than unlimited. Everyday travel is covered, while heavy use in a single country is handled under fair-use limits. Home-market usage is unaffected. Anyone planning a long stay abroad should read the fair-use terms before signing.

Can I get an eSIM and does the network run 5G?+

Yes on both counts. An eSIM is available alongside sim only tariffs, so a new line can be activated digitally, and the range runs on 5G. That suits travellers and anyone swapping handsets, since the profile can move across rather than waiting on a physical card arriving.

Where does One Crna Gora actually operate?+

The brand trades as One Crna Gora DOO and is based in Montenegro, with its market listed as ME. Everything here, from the tariffs to the roaming footprint, is built around that single home market, so readers who need service in several countries will want a different arrangement.

How does the price compare with other brands here?+

On entry price, One Crna Gora ranks at 235 of 258 brands compared, which is mid-field. On the unlimited price it does better, at 110 of 173. The offer is stronger at the top of the range than at the bottom.

How do I reach someone for help?+

Support runs on phone, chat and help centre, so phone, chat and a help centre are all available. Phone suits billing and contract questions, while the help centre carries plan detail. Because One Crna Gora is a network (network), help comes from the operator that issues the tariff rather than a party selling it on.

Sources

Compiled from 5 source pages, checked September 30, 2026. We did not open an account.

One Crna Gora

One Crna Gora

Readers in the home market who want a network's own 5G and eSIM service on a contract or prepaid tariff.

8.6/10See alternatives

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