Setup guide

Install your eSIM
in one tap.

On a compatible phone, Horizon’s install link opens the built-in eSIM setup with your plan details already filled in. Review the prompts, confirm the download, and keep the QR code or manual details as a fallback.

Horizon one-tap setup

Horizon hands setup to your phone

When your eSIM is ready, open the plan on the phone you want to use. Horizon detects iPhone or Android and shows the matching install link.

  1. 01 · Your eSIM is ready
    Install with one tap

    In My eSIMs and your secure order

  2. 02 · Your phone’s secure installer

    Your phone takes over

    The link opens the built-in eSIM installer and fills in the details for your plan. Check them, then follow the device prompts to approve the download.

Is an eSIM fully installed with one tap?

One tap opens your phone’s built-in installer with the Horizon activation details filled in. You still review and approve the device prompts. If the link is not supported, use the QR code or manual details from the same order.

If the link is not supported on your model or software version, the same order includes a QR code and manual activation details.

Supported devices
At a glance

Install your eSIM in three steps

1

Get your eSIM

After checkout, open your plan in My eSIMs or from the secure order link.

2

Add the eSIM

On the phone you want to use, tap Install with one tap. If the link is unavailable, scan the QR code or enter the manual details.

3

Turn on data

At your destination, set Horizon as the data line and follow the plan instructions for data roaming. Keep roaming off on your primary SIM if you want to avoid home-carrier data charges.

Before you start
  • An eSIM-compatible, carrier-unlocked phone. Check the exact model and sales region before purchase.
  • A Wi-Fi connection to install. Do this at home before your trip.
  • Your Horizon QR code or activation link from the order email.

QR and manual setup on iPhone

  1. 1
    Open Settings → Cellular

    Go to Settings, then Cellular (or Mobile Data).

  2. 2
    Tap Add eSIM

    Choose Add eSIM, then Use QR Code.

  3. 3
    Scan the QR code

    Point the camera at the QR code from your order email. Reading this on the same phone? Tap the activation link instead.

  4. 4
    Label the plan

    Name it something like “Horizon travel” so it's easy to tell apart from your main line.

  5. 5
    Turn on data when you land

    Set Horizon as your mobile-data line and follow the plan instructions for Data Roaming. Keep data roaming off on your primary SIM if you want to avoid home-carrier charges.

QR and manual setup on Android

  1. 1
    Open Settings → Network

    Go to Settings → Network & internet → SIMs (wording varies by phone).

  2. 2
    Add a SIM

    Tap Add SIM, then Download a SIM instead / Add eSIM.

  3. 3
    Scan the QR code

    Scan the QR code from your order email and confirm the download.

  4. 4
    Turn it on when you land

    Enable the Horizon eSIM, set it as your mobile-data SIM, and turn roaming on for it so it connects to the local network.

Can't scan the QR code? Use the manual option on the Add eSIM screen and paste the SM-DP+ address and activation code from your order email.
Last updated August 2026
FAQ

Install questions, answered

When should I install my eSIM?

Install at home over Wi-Fi before you travel, then turn the data line on when you land. Data is only used once the eSIM connects to a local network.

Do I need Wi-Fi to install?

Yes — installing downloads the eSIM profile, so you need Wi-Fi or an existing connection. Once installed, it works on the local network without Wi-Fi.

Can I keep my normal number?

Yes. Your physical SIM stays in the phone for calls and texts on your usual number, while the Horizon eSIM carries your data.

Can I reinstall the eSIM if I delete it?

An eSIM can usually only be installed once, so don't delete the profile until your plan is finished. If you run into trouble, contact support before deleting anything.

What if I can't scan the QR code?

Use the manual entry option on your phone's Add eSIM screen and paste the SM-DP+ address and activation code from your order email.

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