The Oppo Find N5 supports eSIM on the Singapore CPH2671 model, which uses a nano-SIM plus eSIM setup and ships with ColorOS 15.0.1. On this foldable, the safest setup path is through the cover screen in portrait orientation, because the cellular settings pages are easier to follow one step at a time.
Travelers usually install an iRoamly travel eSIM before departure so they can turn on mobile data after landing without changing the physical SIM. The QR code method is the fastest option when the iRoamly QR code is available on another screen or printed page.
Manual entry is useful when the QR code will not scan, when you are setting up from the same phone that holds the QR code, or when iRoamly provides the SM-DP+ Address and Activation Code separately. Menu names can vary slightly by ColorOS update, region, or carrier firmware, but this guide uses the ColorOS 15 path: Settings > Mobile network > eSIM > Add eSIM.
Before You Set Up Your iRoamly eSIM
Connect the Oppo Find N5 to stable Wi-Fi before downloading the eSIM profile.
Confirm that your Find N5 variant supports eSIM. The CPH2671 specification lists Nano-SIM card/Nano-USIM card + eSIM, but availability can still depend on region and carrier software.
Keep the iRoamly QR code open on another device, printed, or available in your iRoamly account or purchase email.
For manual setup, keep the iRoamly SM-DP+ Address, Activation Code, and any optional confirmation code ready.
Install the eSIM 1-2 days before travel when your plan allows it, but do not turn on roaming data until you need the travel line.
iRoamly eSIM validity starts from activation. The exact trigger can vary by plan, so check the plan details before installing or using data.
Many iRoamly travel eSIM plans are data-focused. Voice calls and SMS vary by plan, so do not assume they are included unless your specific plan says so.
Do not delete the iRoamly eSIM after installation unless iRoamly support tells you to, because many eSIM profiles cannot be installed again after removal.
Method 1: Install eSIM by Scanning a QR Code
Open Settings on the Oppo Find N5 cover screen, then tap Mobile network. You should see the mobile network page with SIM and eSIM options.

Tap eSIM on the Mobile network page. The phone should open the eSIM management screen, where new eSIM profiles can be added.

Tap Add eSIM. The Find N5 should start the carrier-profile setup flow and prepare the QR scanner.

Choose Scan QR code if the phone asks for a setup method, then point the camera at the iRoamly QR code. Keep the code flat and bright until the phone reads it.

Review the detected iRoamly eSIM profile, then tap Download or Add. Keep Wi-Fi connected while ColorOS downloads the eSIM.

When the download finishes, tap Done. If ColorOS asks whether to turn on the new eSIM now, leave it available but wait to use roaming data until you are ready to travel.

Method 2: Install eSIM Manually
Open Settings on the Oppo Find N5 cover screen, then tap Mobile network. This is the same starting point as the QR method.

Tap eSIM on the Mobile network page. You should see the eSIM management page again.

Tap Add eSIM. The phone should open the add-eSIM flow.

Tap Need help? or Enter details manually on the QR-code screen. ColorOS should show fields for manual activation details.

Enter the iRoamly SM-DP+ Address and Activation Code exactly as provided. If a Confirmation Code field appears, leave it blank unless iRoamly gave you one, then tap Continue.

Review the iRoamly eSIM profile, then tap Download or Add. Keep the Find N5 connected to Wi-Fi until the profile finishes downloading.

Tap Done after ColorOS confirms the eSIM was added. The profile should now be stored on the Find N5 even if you do not use it for data yet.

How to Confirm Your iRoamly eSIM Is Installed
Go to Settings > Mobile network > eSIM. Look for a new eSIM profile, which may appear as iRoamly, a destination name, or a carrier profile name.

Tap the new iRoamly eSIM profile and check that the eSIM switch is available. If the plan includes only data, do not use SMS or calling as your confirmation test.

If you are already at your destination and the plan is active, turn off Wi-Fi briefly and open a lightweight webpage. A successful load confirms that the data connection is working.

Configure eSIM for Mobile Data
Open Settings > Mobile network, then tap Mobile data. The phone should show the available SIM or eSIM choices for data.

Select the iRoamly eSIM as the mobile data line. This keeps travel data on the iRoamly plan instead of your primary SIM.

Open the iRoamly eSIM profile and turn on Data roaming if your iRoamly plan or destination instructions require it. Leave roaming off for your primary SIM if you want to avoid accidental charges.

Check the status bar after leaving Wi-Fi. The Find N5 should show mobile signal for the active eSIM, and apps should load through mobile data.

Troubleshooting
If Add eSIM is missing, confirm that your Find N5 variant supports eSIM, update ColorOS, restart the phone, and check whether your region or carrier firmware disables eSIM.
If the QR code will not scan, raise the brightness on the device showing the code, clean the camera lens, avoid reflections, or use manual entry with the SM-DP+ Address and Activation Code.
If ColorOS says the QR code was already used, do not delete and retry repeatedly. Many eSIM profiles are single-install, so contact iRoamly support.
If activation is pending, keep Wi-Fi on, wait a few minutes, and restart the phone if the setup screen recommends it.
If the eSIM appears but mobile data does not work, select the iRoamly eSIM for Mobile data, turn on Data roaming when required, and make sure the destination is covered by your plan.
If calls or SMS do not work, check the plan details. Many travel eSIMs are data-only and will not provide a phone number, voice service, or text messaging.
If manual entry fails, check every character in the SM-DP+ Address and Activation Code. Do not add spaces unless iRoamly includes them.
Conclusion
Now that your iRoamly eSIM has been added to your Oppo Find N5, your travel connection is ready whenever you need it. Once your plan activates, you can use mobile data in supported destinations while keeping your physical SIM installed for your regular calls or messages if required.
Preparing your eSIM before departure helps simplify international travel by reducing setup after arrival and giving you quick access to the online services you rely on most. It's a flexible and convenient way to stay connected wherever your journey takes you.