What is an eSIM and why do travellers need one
An eSIM (embedded SIM) is a digital SIM card built into your smartphone that can be activated without a physical swap. For travellers, this means: no need to buy a local SIM on arrival — just buy an eSIM online in advance and activate it whenever you're ready.
eSIM provider comparison for Europe (2026)
| Provider | Coverage (countries) | Data / unlimited | Price (approx.) | Speed |
|---|---|---|---|---|
| Airalo | 30+ Schengen | 1–20 GB | $5–28 | 4G/LTE |
| Holafly | 30+ Schengen | Unlimited | $19–49 | 4G/LTE |
| Nomad | 25+ countries | 1–10 GB | $6–22 | 4G/LTE |
| Marix | 35+ European countries | 1–30 GB | $4–25 | 4G/LTE |
Prices for 7–30 day plans, data as of May 2026.
How to choose an eSIM for your trip type
Short trip (3–7 days) with moderate usage
A 3–5 GB plan is plenty. It covers navigation, messaging and social media. We recommend Airalo or Marix.
Long trip (2–4 weeks) or frequent streaming
Consider Holafly's unlimited plan. Be aware that "unlimited" typically means speed throttling after a daily cap (usually 1–3 GB at full speed).
Multiple countries (multi-country plan)
Make sure the eSIM covers your destination countries. Most "European" eSIMs cover the Schengen zone, but check — the UK is often a separate package.
Budget option
Nomad or Marix for smaller data volumes — best price-to-quality ratio.
Step-by-step: buy and activate an eSIM
- Confirm your smartphone supports eSIM (most flagships from 2018 onward do).
- Go to Marix and select an eSIM for Europe or a specific country.
- Pay — a QR code or activation code arrives in your email.
- On iPhone: Settings → Cellular → Add Cellular Plan → "Use QR Code."
- On Android: Settings → Network → SIM cards → Add eSIM → enter code or scan QR.
- Activate the eSIM on arrival or in advance — depends on the provider.
Frequently asked questions
Does an eSIM replace my main SIM card? No. Most smartphones run a physical SIM and eSIM simultaneously (Dual SIM). You keep your home number while data runs through the eSIM.
Can I use one eSIM for multiple trips? It depends on the provider. Some eSIMs activate immediately at purchase; others activate on first connection. Marix clearly states the activation terms in each product description.
What if the signal is weak in a country? European eSIMs roam through local carrier partners — signal depends on the partner network. In major cities and on main highways, coverage is consistent.
On Marix you'll find eSIMs for Europe, the Schengen zone and individual countries — instant code delivery and simple activation. Pick a plan that fits your trip.