If you drive for a living across Europe, you’ve probably heard some version of two contradictory things: “roaming is free in the EU now” and “my phone bill was huge after that trip.” Both are true, and the gap between them is exactly what this guide is about.
Since 15 June 2017, the EU’s “Roam Like at Home” (RLAH) rule means that inside the EU/EEA, your home plan’s calls, texts, and data work exactly as they do at home, at no extra charge. As of 1 January 2026, that zone also includes Moldova and Ukraine. But “no extra charge inside the zone” is not the same as “no limits, no exceptions, no countries left out” — and for a driver whose actual route runs Romania → Hungary → Austria → Germany → possibly Switzerland or the UK for a delivery, those exceptions are exactly where the bill shock happens.
What “Roam Like at Home” actually covers
The RLAH zone, as of 2026, covers the 27 EU member states plus Iceland, Liechtenstein, Norway, Moldova and Ukraine — 32 countries in total. Inside this zone, your operator must let you use your domestic plan exactly as at home, including matching network quality (if you get 5G at home, you’re entitled to 5G roaming where the local network supports it).
| Status | Countries |
|---|---|
| Fully inside RLAH (free roaming) | All 27 EU states, Iceland, Liechtenstein, Norway, Moldova, Ukraine |
| Outside RLAH — standard international rates apply | United Kingdom, Switzerland, Turkey, and the Western Balkans (Serbia, Bosnia & Herzegovina, North Macedonia, Albania, Montenegro, Kosovo) — the EU Council approved opening free-roaming negotiations with the Balkans in June 2026, but they are not in the zone yet |
For a Romanian driver, that second row is not a footnote — it’s Serbia and Turkey on the way to some Middle Eastern deliveries, Switzerland on Alpine transit routes, and the UK on cross-Channel runs. None of these get the EU protection, regardless of how generous your Romanian plan is.
The Fair Use Policy: the part nobody explains clearly
“Free roaming” inside the EU doesn’t mean unlimited. Operators are allowed to apply a Fair Use Policy (FUP) on data, calculated by a formula set at EU level: your monthly plan price (excluding VAT) divided by the regulated wholesale data cap, multiplied by two. That wholesale cap steps down every year under Regulation (EU) 2022/612 — it was €1.30/GB in 2025, dropped to €1.10/GB on 1 January 2026, and drops again to €1.00/GB on 1 January 2027, where it stays until 2032. A lower cap means a larger roaming allowance for the same monthly plan price, so your allowance automatically grew a little at the start of 2026 even if your plan didn’t change.
| Monthly plan price (excl. VAT) | Roaming data allowance (approx., 2026 cap of €1.10/GB) |
|---|---|
| €7 | ~12.7 GB |
| €13 | ~23.6 GB |
| €20 | ~36.4 GB |
| €25 | ~45.5 GB |
Figures are illustrative, based on the published EU formula (plan price ÷ €1.10 × 2) and the 2026 wholesale cap; your operator’s exact allowance may vary and must be disclosed to you directly — check your provider’s app or website for your specific number.
This is exactly why a cheap Romanian prepaid plan (the kind marketed on price, not on roaming allowance) often comes with a surprisingly small FUP data limit abroad — the formula rewards higher-priced plans with more roaming data. Go over your FUP allowance, and the operator can charge you up to the wholesale cap per GB, still capped, but no longer included in your normal price.
The “permanent roaming” trap
There’s a second limit that catches long-haul drivers specifically: operators monitor usage over a rolling four-month window, and if your time or usage abroad consistently exceeds your time or usage at home, they’re permitted to flag your account for “anomalous roaming” and apply surcharges after a warning period. This rule exists to stop people buying a cheap SIM in one country and using it permanently in another — but a driver who spends 20+ days a month outside Romania can look, on paper, exactly like that. It’s rarely enforced aggressively against genuine periodic travelers, but it is a real mechanism, and it’s worth knowing it exists before you assume “roaming is free” means “no restrictions, ever.”
Where an eSIM actually wins
An eSIM doesn’t replace your home number — it runs alongside it, giving you a second, dedicated data connection that isn’t tied to your Romanian plan’s FUP calculation at all. That matters in three specific situations:
| Scenario | Home SIM + roaming | Dedicated data eSIM |
|---|---|---|
| 2-week route entirely inside the EU | Covered by RLAH, but counts against your FUP allowance and your 4-month usage ratio | Unlimited by home-plan rules; doesn’t touch your Romanian FUP at all |
| Route includes Switzerland, UK, Serbia, or Turkey | Full international roaming rates apply — can be the most expensive option on your whole trip | Depends on the eSIM’s country coverage — check before buying, but generally far cheaper than carrier international rates |
| Heavy data use (navigation, video calls home, entertainment during rest periods) | Risk of hitting FUP limit and being throttled or surcharged | Sized to your actual need, no interaction with your home plan’s limits |
| Short weekend trip, staying inside the EU | Simplest option — RLAH covers it with no extra setup | Extra step for not much benefit on a short EU-only trip |
The honest conclusion
For a Romanian driver whose routes stay entirely inside the EU and who doesn’t use much data, roaming under RLAH is genuinely free and simple — there’s no need to overcomplicate it. The calculation changes as soon as any of these apply: your route regularly crosses into non-EU territory (Switzerland, UK, Serbia, Turkey, the Balkans), you’re a heavy data user (navigation running most of the day, video calls, entertainment during rest stops), or you’re spending enough time abroad that the four-month “predominant use” rule becomes a real risk rather than a theoretical one.
In those cases, a dedicated data eSIM sized to your actual route and usage removes the guesswork entirely — no FUP formula to calculate, no non-EU exception to worry about, and no rolling four-month monitoring window on your primary number.
A worked comparison: two weeks, five countries
Take a realistic route: Bucharest → Hungary → Austria → Germany → a return leg through Switzerland for a delivery, over two weeks, with moderate data use (navigation running most of the driving day, a daily video call home, some music).
| Leg | RLAH status | What happens on a home SIM + roaming |
|---|---|---|
| Romania → Hungary → Austria → Germany | Fully inside RLAH | Covered by your home plan, counted against your FUP allowance and your rolling 4-month usage ratio |
| Germany → Switzerland leg | Outside RLAH entirely | Full international roaming rates apply, uncapped by any EU formula — this single leg is often the most expensive part of the whole trip |
The EU legs are, correctly, “free” in the sense that they don’t add a surcharge on top of your normal plan price — but they still consume your FUP allowance and count toward the four-month monitoring window. The Switzerland leg is where an unprepared driver gets an unpleasant surprise, precisely because there’s no EU protection to fall back on at all once you’re outside the 32-country zone.
Frequently asked questions
Does “Roam Like at Home” mean truly unlimited data anywhere in the EU?
No. It means no roaming surcharge on top of your domestic price, up to a Fair Use Policy allowance calculated from what you pay monthly. Beyond that allowance, a capped surcharge can apply.
Is Switzerland covered by EU roaming rules?
No. Switzerland is outside the EU/EEA and outside the RLAH zone entirely. Any roaming there is governed by your operator’s standard international rates.
What about the UK, since it used to be in the EU?
The UK left the RLAH zone at the end of the Brexit transition period (31 December 2020). Some UK and EU operators voluntarily preserve EU-like roaming benefits, but this is not guaranteed by regulation — check with your specific operator before assuming.
Can my Romanian operator penalize me for spending most of the month abroad for work?
Operators may monitor a rolling four-month window and flag accounts where more than half the days or more than half the usage happens abroad. In practice this is aimed at permanent relocation abuse rather than genuine periodic work travel, but the mechanism exists and drivers who are abroad most of the month are the profile most likely to be flagged, even if surcharges are rarely the end result for legitimate professional use.