Telvoros — eSIM analysis for European travellers

Plan analysis

The three numbers that matter more than the headline price

Price per gigabyte is the least useful figure in travel data. Validity, throttling thresholds and the cost of a top-up tell you far more about what a plan will actually feel like.

By Tomas Berger11 November 20268 min read

Networks

5G abroad: useful, overrated, or both?

5 min read

Roaming

The EU rule that still surprises travellers

6 min read

Data

What a gigabyte buys in 2026

4 min read

Method note

Telvoros is an independent analysis publication. We do not sell connectivity, accept placement fees, or publish sponsored rankings. Figures are illustrative and should be checked against current plan terms.

Latest analysis

Five pieces

Plan analysis

Unlimited, fair use and the small print: a reader’s method

Three clauses decide whether an unlimited plan behaves like one. Learn to find them before the price comparison page does its work.

By Alina Novak·7 November 2026·7 min read

B02

Networks

Bands, towers and the geography of a good signal

Coverage maps describe outdoor probability, not the inside of your hotel. A short guide to reading them honestly.

By Piet Vandermeer·3 November 2026·9 min read

R03

Roaming

Roam like at home: what the rule covers and what it does not

The European roaming framework is broader than a price promise and narrower than travellers assume. The boundaries matter.

By Tomas Berger·30 October 2026·6 min read

D04

Devices

Dual SIM logic: which line spends data when

Two active lines, one data default, and a set of fallbacks that are easy to misread. A diagram-free explanation.

By Alina Novak·26 October 2026·5 min read

F05

Troubleshooting

Five signals that the plan, not the phone, is the problem

Before a factory reset, check the account state. The pattern of failure usually points to one side of the connection.

By Piet Vandermeer·21 October 2026·6 min read

01
Does “unlimited” ever mean unlimited?
Analysis · 3 min
02
Is 5G worth paying extra for abroad?
Analysis · 4 min
03
Can two eSIM profiles be active at once?
Explainer · 2 min
04
Why is my data slower in a crowded station?
Analysis · 4 min
05
Does an eSIM affect battery life?
Explainer · 3 min

Coverage

Coverage, in plain numbers

Indicative expectations, not promises. Actual performance depends on the network, the building and the hour.

Setting	Typical experience	What to plan for
Capital city centre	Dense 4G/5G	Comfortable for maps, calls and short video
Mainline rail	Mixed 4G	Expect gaps in cuttings and tunnels
Coastal and island areas	Variable	Check the ferry operator’s own coverage note
Alpine valleys	Patchy	Offline maps are essential, not optional

The table is qualitative on purpose: any precise number would be out of date before publication.

Topics

Four starting points

Plan analysis

Prices, thresholds and the clauses that change behaviour.

Networks & bands

What coverage claims describe, and what they omit.

Roaming rules

The framework, its edges and the exceptions.

Diagnostics

A method for isolating a failure without guesswork.

Read the plan before you buy the trip

The three numbers that matter more than the headline price

5G abroad: useful, overrated, or both?

The EU rule that still surprises travellers

What a gigabyte buys in 2026

Latest analysis

Unlimited, fair use and the small print: a reader’s method

Bands, towers and the geography of a good signal

Roam like at home: what the rule covers and what it does not

Dual SIM logic: which line spends data when

Five signals that the plan, not the phone, is the problem

Coverage, in plain numbers

Topics

Plan analysis

Networks & bands

Roaming rules

Diagnostics