iPhone 12 eSIM Install Guide Step-by-Step Instructions

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Written by James Peterson
May 06, 2026 4-min read

If you're looking for a simpler way to connect to mobile networks, eSIM is a great option to consider.

There’s no need to insert a card or use additional tools—just a few steps in your phone settings are enough to get started.

On iPhone 12, the process is designed to be intuitive and quick, even for first-time users.

Below, we’ll walk you through how to install and set up your iRoamly eSIM so you can get connected without unnecessary hassle.

Preparations Before Setting Up iRomly eSIM

Before starting, ensure you have the following:

  • A stable internet connection (Wi-Fi or cellular)

  • A valid eSIM QR code or manual activation details (SM-DP+ address and activation code) provided by your carrier

  • Your iPhone 12 powered on and unlocked

  • The device updated to the latest iOS version (recommended for compatibility)

Method 1: Install eSIM via QR Code Scanning

Step 1: Open Settings

  • Tap Settings on the Home Screen

Settings 12

Step 2: Navigate to Cellular Settings

  • Scroll down and tap Cellular (On some devices, this may appear as Mobile Service or Mobile Data)

Cellular 12

Step 3: Add a New Cellular Plan

  • Tap Set Up Cellular if no cellular plan is installed, or tap Add Cellular Plan to add a new line

Add Cellular Plan 12

Step 4: Select QR Code Option

  • Tap Use QR Code

Use QR Code 12

Step 5: Scan the QR Code

  • Point your iPhone camera at the carrier-provided QR code

Place the QR Code Here 12

  • Wait until the QR code is recognized automatically

Step 6: Confirm Plan Addition

  • Tap Add Cellular Plan when prompted

Step 7: Label the eSIM Line

  • Choose a label (e.g., Primary, Secondary, Business, etc.)

  • Tap Continue

Step 8: Configure Default Line Settings

Select your preferred default line for:

  • Voice calls

  • iMessage & FaceTime

  • Mobile data

Tap Continue after each selection

Method 2: Install eSIM via Manual Input

Step 1: Open Settings

  • Tap Settings

Settings 12

Step 2: Go to Cellular Settings

  • Scroll down and tap Cellular (On some devices, this may appear as Mobile Service or Mobile Data)

Cellular 12

Step 3: Add Cellular Plan

  • Tap Set Up Cellular if no cellular plan is installed, or tap Add Cellular Plan to add a new line

Add Cellular Plan 12

Step 4: Select Manual Entry Option

  • Tap Enter Details Manually at the bottom of the screen

Enter Details Manually 12

Step 5: Input Activation Information

Enter the following exactly as provided by your carrier:

  • SM-DP+ Address

SM-DP Address 12

  • Activation Code

  • Tap Next (top-right corner)

Next 12

Step 6: Download and Activate eSIM

  • Wait while the iPhone connects to the carrier server

  • Tap Add Cellular Plan when prompted

Step 7: Label the eSIM Line

  • Select a label (e.g., Primary, Secondary, Travel)

  • Tap Continue

Step 8: Set Default Line Preferences

  • Choose defaults for calls, messaging, and data

  • Tap Continue after each configuration

How to Confirm Successful eSIM Installation

Step 1: Check Cellular Plans

  • Go to Settings > Cellular (On some devices, this may appear as Mobile Service or Mobile Data)

Cellular 12

  • Confirm that a new plan appears under Cellular Plans

Step 2: Verify Signal Status

  • Look at the top-right corner of the screen

  • Ensure signal bars appear for the newly added line

Step 3: Check Line Status

  • Tap the new plan under Cellular Plans

Confirm that:

  • Turn On This Line is enabled (toggle is green)

  • Status shows Connected or similar

Step 4: Test Connectivity

Make a call or enable mobile data using the new line:

  • Go to Settings > Cellular (On some devices, this may appear as Mobile Service or Mobile Data) > Cellular Data

  • Select the newly added eSIM

Open a webpage to confirm data connectivity

Note: Some eSIM plans may not include voice calling support, so this feature might not be available depending on your plan.

Conclusion

By following the steps above, you should now be able to successfully install and activate your iRoamly eSIM on your iPhone 12.

The entire process is designed to be straightforward, with all configuration handled directly through your device settings—no physical SIM card or additional tools required.

This not only saves time but also reduces the chances of setup errors. With eSIM, getting connected becomes a faster and more flexible experience, allowing you to access mobile data whenever you need it without unnecessary delays.