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eSIM Installation/Reinstallation Guide

If your eSIM disappeared, was deleted, or failed to install properly, this guide explains what to do next.

Updated over 2 weeks ago

When Should I Reinstall My eSIM?

Reinstallation may help if:

– You accidentally deleted your eSIM
– Installation failed during setup
– The eSIM no longer appears after restart

Reinstallation does NOT fix:

– Slow internet speeds
– Data limits or throttling
– Coverage issues

If you are experiencing connectivity issues, troubleshoot first before deleting your eSIM.


Important: Before You Start

– You can delete and reinstall the same eSIM up to 3 times on the same device.
– Make sure your device supports eSIM.
– Ensure your device is carrier unlocked.
– Use a stable WiFi connection during installation.

– If your eSIM was deleted from your device, you can usually reinstall it using the same QR code on the same device, as long as it has not been transferred to another device or replaced.
– If the QR code no longer works, contact support to receive new installation details.


Method 1: Reinstall Through the Firsty App (Recommended)

  1. Open the Firsty app

  2. Log in to your account

  3. Tap Install eSIM

  4. Follow the on-screen instructions


Method 2: Install Using a QR Code

You can install your eSIM by scanning a QR code.

On iPhone:

  1. Go to Settings

  2. Tap Cellular (or Mobile Data)

  3. Tap Add eSIM

  4. Select Use QR Code

  5. Scan the QR code

On Android:

  1. Open Settings

  2. Tap Connections

  3. Tap SIM Manager

  4. Tap Add eSIM

  5. Select Scan QR Code

Where to find your QR code:

– The QR code is available inside the Firsty app
– If you cannot access it, request it from support


Method 3: Manual Installation (SM-DP+ Address & Activation Code)

If QR installation does not work, you can install it manually.

On iPhone:

  1. Go to Settings

  2. Tap Cellular

  3. Tap Add eSIM

  4. Choose Enter Details Manually

On Android:

  1. Open Settings

  2. Tap Connections

  3. Tap SIM Manager

  4. Tap Add eSIM

  5. Select Enter Activation Code

You will need:

– SM-DP+ Address
– Activation Code

These details are provided by support after verification.


Changing Devices

Firsty follows a strict 1 eSIM = 1 device policy.

An eSIM can only be installed on one device.

If you are transferring to a new phone:

You must purchase a new replacement eSIM (€0.90) through the support section of Firsty app.

Steps:

  1. Delete the eSIM from your old device

  2. Go to the support section of the Firsty app and purchase a replacement eSIM (€0.90)

  3. Install the new eSIM on your new device

Deleting the eSIM from your old device does not make it reusable. A new eSIM is required for every device transfer.


When NOT to Delete Your eSIM

Avoid deleting your eSIM if:

– You only see “No Service”
– Your connection is slow
– You reached your data limit
– You are troubleshooting roaming or APN settings

Deleting unnecessarily may require purchasing a new eSIM.


eSIM Disappeared?

If your eSIM line is no longer visible in your device settings:

Step 1: Restart your device first.

A simple restart often restores the eSIM profile if it did not fully load.

If the eSIM is still missing after restarting:

– Follow the reinstallation steps below
– Or contact support for assistance

Do not immediately delete anything if you are unsure.


If you need assistance, contact support through the Firsty app, and we’ll guide you step by step

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