Every country has its own rules: some require your passport to activate a SIM, some charge triple at the airport, some barely support eSIM at all. Pick a destination to see what actually works there.
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Guac eSIM covers 200+ countries with plans from $1.50 per GB. Install it before you land and activate instantly.
Albania
ID registration requiredAustria
ID registration requiredBosnia and Herzegovina
ID registration requiredBelgium
ID registration requiredBulgaria
ID registration requiredSwitzerland
ID registration requiredCzech Republic
No ID registration neededGermany
ID registration requiredDenmark
ID registration requiredEstonia
No ID registration neededSpain
ID registration requiredFinland
No ID registration neededFrance
ID registration requiredUnited Kingdom
No ID registration neededGeorgia
ID registration requiredGreece
ID registration requiredCroatia
No ID registration neededHungary
ID registration requiredIreland
No ID registration neededIceland
No ID registration neededItaly
ID registration requiredLithuania
No ID registration neededLatvia
No ID registration neededMontenegro
ID registration requiredNorth Macedonia
ID registration requiredMalta
ID registration requiredNetherlands
No ID registration neededNorway
ID registration requiredPoland
ID registration requiredPortugal
ID registration requiredRomania
ID registration requiredSerbia
ID registration requiredSweden
ID registration requiredSlovenia
No ID registration neededSlovakia
ID registration requiredUkraine
No ID registration neededArgentina
ID registration requiredBolivia
ID registration requiredBrazil
ID registration requiredChile
ID registration requiredColombia
ID registration requiredCosta Rica
ID registration requiredEcuador
ID registration requiredGuatemala
ID registration requiredMexico
ID registration requiredPanama
ID registration requiredPeru
ID registration requiredParaguay
ID registration requiredUruguay
ID registration requiredAn eSIM is a SIM card built into your phone that you activate by scanning a QR code or installing a profile in an app. There is no plastic card to swap, so you can buy and activate a data plan before you leave home and be online the moment you land.
Most phones released since 2019 do, including iPhone XS and newer, Google Pixel 3 and newer, and recent Samsung Galaxy S and Z models. Your phone also has to be carrier-unlocked. Check Settings for an option to add a mobile or cellular plan: if it is there, you are set.
An eSIM is faster and easier: no queue at the airport, no passport registration, and it works the moment you land. A local SIM is usually cheaper per gigabyte and gives you a local phone number, which some banking and delivery apps require. For trips under two weeks an eSIM almost always wins.