Why European data is more complicated than it looks
The EU has roaming rules that mean a SIM from a French carrier technically works in Germany without surcharges. That sounds great, but it only applies within the EU. Albania, Montenegro, Kosovo, Georgia, Turkey, Ukraine, Moldova, and several other popular travel destinations are outside the EU, and coverage there depends entirely on whether your specific plan includes them.
Many travelers arrive in Montenegro or Georgia expecting their "Europe" plan to work, only to find it stops at the EU border. Always check the country list on the plan details page, not just the word "Europe" in the plan name.
What to look for in a European eSIM plan
The most useful plans are pan-EU regional plans that cover 30 or more countries. Some cover Scandinavia, the Balkans, and Turkey; others stop at core Western Europe. For a typical Western European trip (France, Spain, Italy, Germany, Netherlands, Portugal), almost any regional plan covers you. For the Balkans or Caucasus, you need to read the fine print.
5G availability: Germany, the Netherlands, and Sweden have solid 5G. Italy and Spain are decent in cities. Don't buy a plan advertising 5G if you're spending most of your time in rural Slovenia or northern Finland where it doesn't make a difference.
Hotspot support matters if you're traveling with a companion or working remotely. Many "unlimited" European plans throttle or disable hotspot after a daily limit. Check before you buy.
Countries with excellent coverage
Germany, France, Spain, Italy, and the Netherlands are covered by virtually every provider at high quality. The UK is technically separate post-Brexit, but most regional eSIM plans still include it. Portugal, Austria, Belgium, and Switzerland: all well covered and easy.
Countries to double-check
Albania, Kosovo, and Moldova are frequently missing from "Europe" plans or covered only partially. Turkey is a coin flip: some plans include it, others explicitly exclude it. Ukraine is included in some plans but coverage is understandably limited. Georgia and Armenia are technically outside Europe but popular with travelers coming from the Caucasus direction.
If any of these are on your itinerary, confirm the country list on the plan page before purchasing.
How much data to buy
Buy more than you think you need. Running out of data at 11pm in rural Portugal is genuinely not fun. Google Maps, messaging, and occasional social media while exploring adds up faster than most people expect.
A rough guide: if you're primarily doing city tourism with hotel WiFi at night, 10 GB covers 7-10 days comfortably. Active navigation, sharing photos, and video calls can push you to 2-3 GB per day. Remote workers should look at 20-30 GB minimum.
Use the eSIM data calculator to get a more precise estimate based on your specific apps and trip length.
Browse current plan options on the Europe eSIM page to compare prices and coverage details side by side.