Complete Guide to eSIM Installation on iPhone 15 Pro Max

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Written by James Peterson
Apr 24, 2026 4-min read

If you’ve just received your iRoamly eSIM and aren’t sure how to get started, the setup process is actually more straightforward than it might seem.

Unlike traditional SIM cards that require physical insertion, an eSIM can be installed directly through your phone’s settings in just a few steps.

For users with an iPhone 15 Pro Max, the system fully supports eSIM technology, making the process even smoother.

In this guide, we’ll walk you through each step clearly so you can complete the installation quickly and avoid common setup issues.

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 15 Pro Max powered on and unlocked

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

Method 1: Install eSIM via QR Code

Step 1: Open Cellular Settings

  • Tap Settings on the Home Screen

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

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Step 2: Add a New eSIM

  • Tap Add eSIM if you already have an existing cellular plan, or tap Set Up Cellular if this is your first plan

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Step 3: Select QR Code Option

  • Tap Use QR Code

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Step 4: Scan the QR Code

  • The camera interface will open automatically

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

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  • Wait until the code is recognized

Step 5: Confirm Activation

  • When prompted, tap Continue

  • Then tap Add Cellular Plan

Step 6: Label the eSIM Line

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

  • Tap Continue

Step 7: Configure Default Line Settings

  • Select Default Line → tap Continue

  • Select iMessage & FaceTime line → tap Continue

  • Select Cellular Data line → tap Done

Method 2: Install eSIM via Manual Input

Step 1: Open Cellular Settings

  • Tap Settings

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

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Step 2: Add a New eSIM

  • Tap Add eSIM if you already have an existing cellular plan, or tap Set Up Cellular if this is your first plan

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Step 3: Select Manual Entry Option

  • Tap Use QR Code

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  • On the QR scanning screen, tap Enter Details Manually (at the bottom)

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Step 4: Enter Activation Details

  • In the SM-DP+ Address field, enter the address provided by your carrier

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  • In the Activation Code field, enter the activation code

  • If provided, enter the Confirmation Code (optional field)

Step 5: Proceed with Activation

  • Tap Next

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Step 6: Confirm eSIM Installation

  • Tap Add Cellular Plan when prompted

Step 7: Label the eSIM Line

  • Assign a label (e.g., Work, Travel, etc.)

  • Tap Continue

Step 8: Configure Line Preferences

  • Select Default Line → tap Continue

  • Select iMessage & FaceTime line → tap Continue

  • Select Cellular Data line → tap Done

Confirming Successful eSIM Installation

After completing either method, verify that the eSIM is active:

Check in Settings

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

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  • Confirm that the new plan appears under SIMs or Cellular Plans

Check Signal Indicator

  • Look at the top-right corner of the screen

  • You should see signal bars for the newly added line

Test Connectivity

  • Make a phone call

  • Send a text message

  • Enable Cellular Data and open a webpage

Verify Line Status

  • In Settings → Mobile Service (On some devices, this may appear as Cellular or Mobile Data), tap the new plan

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

Conclusion

After completing the setup, you’ll no longer need to worry about handling or replacing physical SIM cards. Your iRoamly eSIM allows your iPhone 15 Pro Max to stay connected with greater ease and flexibility.

If your connection test works successfully, you’re all set to start using data. Compared to traditional SIM cards, this approach offers a smoother and more modern experience.