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The app is the easiest way to install: one tap hands the eSIM to Android, with nothing to scan or type. Do it at home before you travel, while you’re online.
Run through the four quick checks first if this is your first eSIM.
1

Open your plan

In the Roamly app, open the My eSIMs tab and tap your plan. When it’s ready to install you’ll see Your eSIM is ready at the top.
2

Tap Install on this device

Android’s eSIM setup opens with your Roamly eSIM ready to download. Tap Download (some phones say Add or Next).
3

Follow the prompts

Android asks a couple of questions. Name the SIM something you’ll recognise, like Roamly or the country you’re visiting, and keep your normal SIM for calls and messages if asked. Roamly is data-only.
4

Leave the Roamly SIM off until you land

When Android confirms the eSIM is installed, open Settings → Network & internet → SIMs (Samsung: Settings → Connections → SIM manager), tap the Roamly SIM and make sure Use this SIM is off. The plan won’t start until you turn it on and connect at your destination.
5

Turn off Roaming on your normal SIM

While you’re still at home: on the same SIMs screen, tap your normal SIM and turn Roaming off (Samsung: Settings → Connections → Mobile networks → Data roaming). That’s the switch that stops your home carrier charging you overseas. If you won’t need calls or texts on your number while you’re away, you can turn Use this SIM off for that SIM instead; it comes back exactly as it was when you switch it on at home.
Back in the app your plan now shows Installed on your device. That’s it until you fly.

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When you land

Three switches get you online: turn the Roamly line on, select it for mobile data, and turn on Data Roaming for that line only. Follow Just landed? How to activate your eSIM; the app shows the same steps on your plan page once the eSIM is installed.

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