Articles about: eSIM basics
What "unlimited" data really means: fair use policies, explained
Unlimited travel data plans don't stop you — they slow you down. What a fair use policy really does, how to read the fine print, and when unlimited is worth it.
eSIM vs. local SIM card: an honest comparison, including where local wins
A travel eSIM is not the right tool for every trip. A straight comparison with the local prepaid SIM — and the four situations where buying local still wins.
How to turn on data roaming (and why a data-only eSIM needs it)
Data roaming isn't a fee trap for a travel eSIM — it's the setting that turns it on at all. Where to find and flip it on iOS and Android, and why it matters.
Countries where buying a local SIM means showing your passport — and why roamers skip that queue
Many countries require ID to register a SIM card. Here's why, where it shows up, and why an inbound roamer isn't the person the rule is written for.
The Brexit roaming trap: why 'roam like at home' skips the UK both ways
Brexit ended free EU roaming for the UK in both directions. What changed, what UK rules actually require now, and how to avoid a surprise phone bill.
How much data do you actually need? A day-by-day breakdown by traveler type
Work out your real mobile data needs abroad with a simple day-by-day calculator, broken down by activity and traveler type, from backpacker to streamer.
Using your phone in Turkey: passport checks, the IMEI rule, and what actually works
Turkey registers every SIM to a passport and starts a countdown on foreign handsets. What the IMEI rule means for your phone, and the setup that skips it.
Landing without Wi-Fi: your first 30 minutes in a new country
Airport Wi-Fi wants to text you a code you can't receive yet. How to land with data already working, plus the offline backup to build before you fly.
A €100 video call in Switzerland: the roaming bill nobody expects
One weekend in Switzerland, a single video call on the wrong line, and a €100 roaming bill back home. How it happens — and how a VamosData eSIM stops it.
eSIM vs physical SIM: which is better for travel?
eSIM vs physical SIM compared for travelers: setup speed, cost, dual-SIM use and security — plus when plastic still wins and how to check your phone.