TL;DR
- Outside the EU and EEA, UK operators face no regulatory cap on roaming charges — rates vary significantly by destination.
- Check your operator’s country-specific roaming page before travel; rates are published and must be provided on request under Ofcom rules.
- Many operators offer daily or weekly travel passes that bundle calls, texts, and data at a flat rate.
- A local SIM or eSIM profile can be a cost-effective alternative for longer stays.
- Turning off data roaming entirely eliminates passive background data charges; Ofcom requires a data cap warning at £45 (unless you opt out).
Why outside-EU roaming is different
When the UK was part of the EU, the EU Roaming Regulation applied a mandatory cap on wholesale and retail roaming prices across the EU and EEA. Since the UK’s departure, UK travellers have no automatic legal right to “roam like at home” pricing anywhere in the world. Some operators have chosen to maintain inclusive roaming for EU destinations as a commercial offer, but this is voluntary; outside the EU and EEA, there is no regulatory floor or ceiling on what a UK operator may charge.
Ofcom’s General Conditions of Entitlement do still apply. Operators must publish their roaming charges, must provide a bill-shock warning when your data spend abroad reaches £45 (approximately €50) in a billing period, and must not charge beyond that threshold without your explicit consent — unless you have chosen to opt out of the cap. These protections exist regardless of destination. What they do not do is set a maximum price; they simply ensure that you are informed and not charged silently beyond a threshold.
How charges are structured outside the EU
Outside the EU, operators typically use one of three models. First, a per-use tariff: calls, texts, and data are each charged at a per-minute, per-message, or per-megabyte rate specific to the destination country. These rates are set commercially and differ widely — a minute to a US number from a US network partner may cost a fraction of what the same call costs from a remote network in sub-Saharan Africa. Second, a travel pass or day pass: operators bundle a set allowance of minutes, texts, and data for a flat daily or weekly fee activated for each day you actually use your phone abroad. Third, bolt-on add-ons: a fixed-price data or voice package purchased before or during travel that supplements your existing plan.
Operators are also required under Ofcom’s transparency rules to make their full tariff tables available on their websites, and to provide them in an accessible format on request. The specific rates depend on which network your handset connects to in-country (your UK operator has roaming agreements with selected local partners) and which tier the destination country falls into under their pricing structure. Popular tourist destinations — the United States, Canada, Australia, UAE — are usually placed in a lower-cost tier by major operators, while more remote destinations may attract higher per-use rates.
How to check your operator’s country-specific charges
Every major UK operator publishes a roaming rates page, typically accessible via its website or app. Look for a section labelled “roaming”, “travelling abroad”, or “international”. These pages usually allow you to select a destination country and see the per-minute call rate, per-text rate, and per-MB or daily data rate that applies on your current plan. If you cannot locate this information online, you can request it directly from customer service; under Ofcom’s transparency obligations, operators must supply it.
It is worth checking both the per-use rates and any available travel passes at the same time, since whether a pass represents value depends on how intensively you plan to use your phone. A day pass that bundles data may cost less than ten minutes of streaming at per-MB rates. Check also whether any pass covers the specific country you are visiting: some operators group destinations into zones, and a pass that covers most of the Americas may exclude certain island territories or use a separate add-on.
| Option | How it works | Typical cost band | Best suited to | Key watch-out |
|---|---|---|---|---|
| Per-use roaming | Charged per minute/text/MB at operator’s published rate for that country | Variable; can be high for data | Very occasional use (a few texts) | Background data apps can accumulate charges quickly |
| Daily travel pass | Flat fee per day used; bundles calls, texts, data allowance | Typically £1–£6 per day depending on operator and zone | Short trips with regular use | Charged per calendar day you connect; check zone coverage |
| Data bolt-on | Fixed data allowance purchased for a set period | Varies by allowance size and destination | Data-heavy trips where voice is less critical | May not include voice minutes |
| Local physical SIM | Purchase a SIM in-country; use local rates on a second number | Often low for local calls and data | Stays of a week or more | UK number temporarily unavailable; may need unlocked handset |
| International eSIM profile | Download a local or regional eSIM profile before travel | Competitive data-only rates; varies by provider | eSIM-capable handsets; data-first travellers | Voice calls may require a VoIP solution for inbound calls |
Daily pass options: how they work in practice
A travel day pass is typically activated automatically the first time you use your phone in a covered country after enabling roaming — or, depending on the operator, when you manually activate it via an app or SMS. The pass fee is charged once per calendar day on which you actually use the service, not for every day of your trip. So if you land on a Monday evening and only use your phone briefly, you pay for Monday; if you use it on Tuesday and Wednesday you pay for those days too.
The bundled allowances vary by operator. Some pass data through at full speed up to a daily cap (often between 1 GB and 15 GB depending on the plan), then throttle rather than charge extra. Others charge at a per-MB rate once the daily allowance is exhausted. When comparing passes, check: the daily allowance included, the overage treatment, which countries the pass covers (some operators have a lower-cost zone and a higher-cost rest-of-world zone), and whether voice minutes are unlimited or capped.
Alternatives to roaming on your UK SIM
For trips lasting more than a few days, buying a local prepaid SIM at the destination is frequently cheaper than any roaming option. Most smartphones sold in the UK since 2015 are network-unlocked or can be unlocked on request; Ofcom confirmed in its 2021 SIM-lock review that operators must unlock handsets on reasonable request. A local SIM will give you a local number, which means your UK number will not receive calls or texts while you are using it — incoming calls to your UK number will typically divert to voicemail.
An alternative for dual-SIM or eSIM-capable handsets is to download an international eSIM profile from a roaming data provider before departure. This leaves your primary UK SIM active for calls and texts while routing data through a cheaper local network. The eSIM market has grown considerably; coverage varies by provider and country. Neither a local SIM nor an eSIM profile changes your UK operator’s charges for calls to or from your UK number — you need to redirect your number to a VoIP service if you want to receive UK calls cost-effectively while abroad.
What this means in practice
James is travelling to Thailand for two weeks on holiday. His UK plan includes unlimited UK calls, texts, and data but no included roaming. He checks his operator’s website and finds that Thailand falls into a rest-of-world zone with per-use data rates that would make his usual daily app usage expensive. His operator also offers a daily travel pass covering Thailand at £3 per day used. He estimates he will actively use his phone on ten of his fourteen days.
At £3 per day, his roaming cost would be £30. He decides that for the four days he expects to be off-grid on island excursions, he will leave roaming switched off entirely. He also buys a local Thai prepaid SIM at the airport for approximately 300 baht, which he uses for data-heavy navigation and streaming on those active days, keeping the UK SIM on standby for essential calls. His total additional mobile cost for the trip is under £35, compared with an estimated £80–£100 on per-use data alone.
Related Guides
How we verified this
This article draws on Ofcom’s General Conditions of Entitlement (specifically Condition C7 on transparency and bill-shock protections), Ofcom’s published guidance on mobile roaming charges, the Ofcom Connected Nations reports describing UK operator roaming practices, and GOV.UK guidance on mobile roaming post-Brexit. No operator-specific prices are cited as definitive; all cost references are illustrative ranges.
Disclaimer: Kaeltripton.com is an independent UK editorial publisher. We are not regulated by Ofcom or the FCA and we do not sell or arrange mobile services, insurance, or financial products. This content is for general information only and is not legal, financial, or technical advice. Rules, prices, and operator policies change. Verify the current position with Ofcom, GOV.UK, the ICO, or your provider before acting. ICO registered ZC135439. Last reviewed: 2026-06-05.
Frequently Asked Questions
How much does mobile roaming cost outside Europe?
Outside the EU and EEA, there is no regulatory cap, so costs vary widely by operator and destination. Per-use data rates can be high if no add-on is active. Many operators offer daily travel passes in the range of £1–£6 per day used, which bundle an allowance of calls, texts, and data. Always check your specific operator’s published tariff for the exact country before you travel.
Do UK mobile operators offer roaming in the USA?
Most major UK operators offer some form of roaming coverage in the United States, typically through roaming agreements with US network partners. The USA is commonly placed in a lower-cost tier, with daily travel passes frequently available. Check your operator’s roaming page for the current USA rate and whether a pass is available on your plan tier, as availability can differ between contract and prepaid plans.
What is a travel day pass for roaming?
A travel day pass is a flat-rate daily charge — usually applied automatically or on manual activation — that bundles a set allowance of calls, texts, and data while you are abroad in a covered country. You are only charged for days on which you actually use your phone in that country. Allowances, prices, and covered destinations differ by operator and plan; check the specific terms before relying on one.
Should I buy a local SIM when visiting non-EU countries?
For stays of a week or more, a local prepaid SIM often provides better value than any roaming pass, particularly for data. Your handset must be network-unlocked (operators must unlock on request under Ofcom guidance). The trade-off is that your UK number becomes temporarily unreachable for incoming calls and texts while the local SIM is active. Weigh the cost saving against your need to be reached on your UK number.
How do I avoid unexpected roaming charges abroad?
The most reliable step is to turn off mobile data roaming in your phone’s settings before boarding; background apps can accumulate charges even if you do not actively browse. Under Ofcom rules, your operator must alert you when your roaming data spend reaches £45 and must not charge beyond that without your consent. Check your operator’s country-specific rates in advance, and consider a local SIM or a daily pass for cost certainty.
