TL;DR: How to Install an eSIM

Installing an eSIM takes minutes. Two traditional methods exist, and one app skips both.

• QR code: buy a plan, then scan the code your provider sends in your phone's eSIM settings.

• Manual: type the activation details by hand when a QR code will not scan.

• Umi: install in one tap, direct from the app, with no QR code and no codes to type.

You buy a data plan, then sit at the gate squinting at a QR code, trying to scan it off one screen with the camera on another. eSIM setup does not have to work that way. This guide covers the two standard ways to install an eSIM, then the one-tap method that skips them both.

Before You Start

Five things put you on track for a clean setup:

• An unlocked, eSIM-ready phone. Check for an "Add eSIM" option in your settings, or see the supported devices list.

• A stable Wi-Fi connection, since activation runs over the internet.

• Your plan, as a QR code or inside the provider's app.

• The latest software version on your phone.

Method 1: Install via QR Code

The QR code is the standard route, and it comes with a few catches. Your provider emails the code or buries it in the app, so you have to dig it out again if you reinstall or change phones. Many codes work only once, which means a failed scan can leave you waiting on a replacement. And since the code sits on a screen, you often need a second device or a printout to scan it, which is awkward at a gate or in the back of a taxi.

When you have the code in front of you:

On iPhone: open Settings, then Cellular, then Add eSIM. Tap "Use QR Code" and point the camera at the code. Glare and small codes can trip the scan, so steady the screen and try again if it fails.

On Android: open Settings, then Network and Internet, then SIMs, then Add eSIM. Tap "Use QR Code," scan, and confirm through the on-screen steps.

Once the profile loads, switch Data Roaming on for the eSIM line. A travel eSIM connects through partner networks, so the phone treats it as roaming, and data stays dark until you enable it. You find the toggle under the eSIM line in your Cellular or SIM settings. Then check your signal and open a page to confirm data works.

Method 2: Manual Install

If the QR code will not scan, you enter the details by hand, and this is where setup gets fiddly. Most phones show an "Enter details manually" link on the Add eSIM screen. Your provider gives you two values: a long SM-DP+ address and an activation code, both strings of letters and numbers. One mistyped character stops the install, so you copy them across with care, and a code that has already been used will not work a second time.

Manual entry helps when you receive the details as text rather than an image, or when glare blocks the camera. After the profile installs, switch Data Roaming on for the eSIM line, the same as with a QR code, or data will not flow.

The Easy Way: Umi's One-Tap Install

Umi skips the QR code and the manual entry. You install the eSIM in one tap, direct from the app, with no code to scan and nothing to type. Setup runs in under 60 seconds, and the same eSIM then works across 200+ destinations, so you install once and reuse it on every trip.

There is no fresh profile to add at each border, no saved QR code to dig out, and no SIM to swap. The app guides you through setup, including the one Data Roaming toggle every travel eSIM needs, so nothing is left to guess. The pay-as-you-go balance never expires, so data you buy carries to your next trip.

• One tap, no QR code. Add Umi straight from the app, with nothing to scan or type.

• Install once, use everywhere. The same eSIM covers 200+ destinations.

• Ready in under 60 seconds, with a balance that never expires.

Quick Troubleshooting

If the eSIM will not connect, work through these in order:

• Confirm your phone is unlocked and runs the latest software.

• Connect to stable Wi-Fi and try again.

• Restart your phone.

• Contact your provider's support if it still fails. They can resend the profile.

FAQs

Can I run an eSIM and a physical SIM at once?
Yes. Most modern phones hold both, so you keep your home number active while you use a data eSIM abroad.

Do I need Wi-Fi to install?
Yes. Activation needs an internet connection, so set up before you leave or on airport Wi-Fi.

What if the QR code will not scan?
Use manual entry. Type the SM-DP+ address and activation code your provider gives you.

Is an eSIM secure?
Yes. The profile is encrypted, and you can lock or remove it from your device if the phone goes missing.

Now that setup is clear, put it to use. With Umi, one tap installs an eSIM that works across 200+ destinations, with no SIM to swap and no roaming fees. Download Umi and connect the moment you land.