The Huawei Mate 40 Pro supports eSIM on eligible regional variants, but this guide does not apply to the Mate 40 Pro+ or to carrier/region builds where eSIM is disabled. The steps below assume an English EMUI 12 or HarmonyOS-style interface using Settings > Mobile network > SIM management.
Travelers often install an iRoamly travel eSIM before departure so they can use mobile data without changing their physical SIM. The QR code method is usually quickest, while manual entry is useful when the QR code is on the same phone, cannot be scanned clearly, or needs to be copied from the iRoamly order page or email.
This guide covers both setup paths, how to confirm the iRoamly eSIM appears on the Mate 40 Pro, and how to choose it for travel data. Menu names can vary slightly by EMUI/HarmonyOS version, region, and carrier firmware, so check that your phone shows SIM management and Add eSIM before starting.
Before You Set Up Your iRoamly eSIM
Connect the Huawei Mate 40 Pro to stable Wi-Fi before downloading the eSIM.
Make sure your Mate 40 Pro variant supports eSIM and is carrier-unlocked for travel use.
Keep the iRoamly QR code available on another screen or printed page if you plan to scan it.
Keep the iRoamly manual activation details ready if you plan to enter the code by hand. On Huawei, the manual screen commonly uses one complete activation-code string, such as an LPA:1$... code, rather than separate boxes.
Do not delete the iRoamly eSIM after installation unless iRoamly support tells you to. Many eSIM profiles cannot simply be reinstalled after removal.
Install the eSIM 1-2 days before travel when possible, but check your plan details first. iRoamly plan validity starts from activation; the exact activation trigger can vary by plan and destination.
iRoamly eSIM plans may be data-only. Voice calls and SMS availability varies by plan, so check the specific plan details before relying on calls or texts.
Method 1: Install eSIM by Scanning a QR Code
1. Open Settings on your Huawei Mate 40 Pro, then tap Mobile network.
You should see the Mobile network page, where Huawei keeps mobile data and SIM options.
2. Tap SIM management.
The phone should open the SIM management screen, where physical SIMs and eSIM profiles are managed.
3. If the eSIM switch is off, turn it on, then tap Add eSIM.
The Mate 40 Pro should open the eSIM setup flow and prepare to scan a QR code.
4. On the Add eSIM screen, point the scanner at the iRoamly QR code.
Keep the QR code flat and bright. After the phone reads it, the setup flow should show an iRoamly eSIM profile ready to add.
5. Review the profile name, then tap Add this eSIM.
Wait while the Mate 40 Pro downloads and adds the iRoamly eSIM. Keep Wi-Fi connected until the setup finishes.
6. When the setup finishes, return to Settings > Mobile network > SIM management.
You should see the iRoamly travel eSIM listed under the eSIM section or available as a mobile data option.
Method 2: Install eSIM Manually
1. Open Settings on your Huawei Mate 40 Pro, then tap Mobile network.
This is the same starting point used for QR installation.
2. Tap SIM management.
The SIM management page should show your physical SIM slots and eSIM controls.
3. If needed, turn on the eSIM switch, then tap Add eSIM.
The phone should open the same eSIM setup flow used for scanning a QR code.
4. On the Add eSIM QR scanner screen, tap Enter Manually.
Use this option when the QR code is on the Mate 40 Pro screen, cannot be scanned, or iRoamly gives you manual setup details.
5. Paste the complete activation code from iRoamly into the Activation code field, then tap NEXT.
Use the full code exactly as provided, including the SM-DP+ server portion if it is included in the same LPA:1$... string. Do not add spaces or line breaks.
6. Review the eSIM profile details, then tap Add this eSIM.
Wait for the download to finish. If the phone asks whether to enable the eSIM now, choose the option that turns on the iRoamly eSIM.
How to Confirm Your iRoamly eSIM Is Installed
1. Go to Settings > Mobile network > SIM management.
Look for an eSIM profile named iRoamly Travel eSIM, Travel, or a similar label from your iRoamly plan. The eSIM switch should be on.
2. Tap the iRoamly eSIM profile if your software version allows profile details.
Confirm that the profile is enabled. If the plan is data-only, do not expect normal voice calling or SMS testing to work unless your iRoamly plan specifically includes those services.
3. Turn off Wi-Fi briefly after arrival or when you are in the supported destination, then test a simple website or map search using mobile data.
If the page loads, the iRoamly eSIM is installed and the data connection is working.
Configure eSIM for Mobile Data
1. Open Settings > Mobile network > SIM management.
Stay on this page because the default data line is selected from SIM management on Huawei software.
2. Tap Default mobile data, then select the iRoamly eSIM.
The selected line should change to the iRoamly eSIM, so mobile data uses the travel plan instead of your primary SIM.
3. Open the iRoamly eSIM data settings or Mobile data, then turn on Mobile data.
The phone should show mobile data enabled for the selected line.
4. Turn on Data roaming when your iRoamly plan or destination instructions require it.
Many travel eSIM plans need data roaming to connect to partner networks abroad. Leave your primary SIM roaming off if you want to avoid roaming charges from your home carrier.
Troubleshooting
If Add eSIM is missing, confirm that your Mate 40 Pro is not the Mate 40 Pro+, that your regional model supports eSIM, and that your carrier firmware has not disabled eSIM.
If the QR code does not scan, increase screen brightness on the device showing the code, clean the camera lens, or use Enter Manually with the iRoamly activation details.
If the QR code says it has already been used, do not delete the eSIM. Contact iRoamly support because eSIM QR codes are often single-use after installation begins.
If activation stays pending, keep Wi-Fi on, restart the phone, then check Settings > Mobile network > SIM management again.
If the iRoamly eSIM appears but data does not work, set it as Default mobile data, enable Mobile data, and turn on Data roaming if your plan requires it.
If calls or SMS do not work, check your iRoamly plan details. Many travel eSIMs are designed for mobile data only.
If the manual code fails, copy the complete activation string exactly from iRoamly and make sure no extra spaces were pasted before or after the code.
Conclusion
Your iRoamly eSIM is now installed and ready for use when your travel plan becomes active. Because the profile is already stored on your Huawei Mate 40 Pro, you can begin using mobile data in supported destinations without spending time setting up a new connection after you arrive.
Whether you're checking directions, sharing photos, staying in touch with family, or managing your itinerary, your travel eSIM helps you stay connected wherever your journey takes you. It's a convenient way to enjoy reliable mobile data while keeping your existing SIM card in place.