eSIM basics
Start here — how eSIMs work, the terms you'll meet, and whether your phone is ready.
Your phone can text by satellite now. Here is where that works abroad, where it quietly does nothing, and what it will never replace.
Norway is covered. Switzerland, ferries and your unlimited plan's small print are where the EU allowance really runs out.
Apple's foldable iPhone Duo has no SIM tray in any country, mainland China included. What the new lineup actually changes if you travel with an eSIM.
You get 180 days from purchase to activate an eSIM, separate from your plan's validity clock. What the deadline means and what to do if you're close to it.
One eSIM, no plan to pick. Load credit and data comes off the balance by the megabyte, at a published local rate, in 180+ countries. How it works.
Your travel eSIM shows up with no phone number, and that's normal. Here's exactly what moves to the eSIM, what stays on your home SIM, and how hotspot fits in.
No QR code, no second screen: tap a link on the phone you're setting up and the install screen opens itself, already filled in. Here's what it needs.
One country, a region, or the whole trip? What really separates the three eSIM plan types, and a simple way to pick the one your itinerary needs.
See a carrier name you don't recognize when you land? That's normal. How eSIM roaming networks get picked, and how to check yours before you fly.
Installed a new eSIM every trip and hit a wall? How many profiles your phone can store, how that differs from how many run at once, and what to delete first.
EID and ICCID sound alike but mean different things. Learn what each number is, exactly where to find it on iPhone and Android, and when support asks for one.
You can't run one eSIM on two phones at once, but you can share its data. Here's how tethering works, and when a second eSIM makes more sense.