Could Not Add Cellular Plan — Airalo eSIM Install Failed
You try to install an Airalo eSIM on your iPhone — and after a few seconds you see "Could not add Cellular Plan." Install cancels. This error is not a faulty eSIM: it almost always comes from iPhone profile limits, a reused QR, or unstable Wi-Fi during install.
Why this error happens
- iPhone eSIM profile limit reached. iPhone stores up to 8 eSIM profiles at once (you can actively use 2, but up to 8 can sit in the system). Trying to add a ninth triggers the error.
- QR code already used on another device. If the eSIM was installed once on another iPhone or Android, the same QR will not work on a new device.
- Unstable Wi-Fi. During install, iPhone connects to the SM-DP+ server. A dropped connection mid-process rolls back the install with an error.
- Old iOS version. Below iOS 14 eSIM support is limited; on iOS 17+ Apple tightened profile checks.
How to fix it
- Check your eSIM profile list. Settings → Cellular (or Mobile Service) → scroll down. Delete unused eSIMs by swiping left, or via Settings → Cellular → tap an eSIM → Remove Cellular Plan.
- Reboot the iPhone fully. Not Restart from settings — hold the side buttons until the Apple logo appears. This clears stuck eSIM sessions.
- Connect to stable Wi-Fi. Home Wi-Fi is better than hotel Wi-Fi. At least 5 Mbps for a smooth install.
- Install via manual entry. Settings → Cellular → Add eSIM → Use QR Code → Enter Details Manually. Copy SM-DP+ Address and Activation Code from the Airalo app (My eSIMs → Install Manually).
- If the QR was used before — open Airalo chat (My eSIMs → Help) and request reissue. Airalo often regenerates a free QR for the same package.
- Update iOS. Settings → General → Software Update. Install is more reliable on the latest version.
- Wait a minute and retry. Apple sometimes returns the error because of temporary load on its profile servers.
What the error means in different cases
| Scenario | Cause | Fix |
|---|---|---|
| First install on new iPhone | Weak Wi-Fi or server load | Reboot and retry |
| Already had 8 eSIMs in system | iPhone profile limit | Remove old eSIMs |
| Same QR on second iPhone | Single-use QR | Request a new one from Airalo |
| After restoring from backup | Broken profiles | Remove all eSIMs, reinstall |
Safer way to get a working eSIM
With Marix you buy an Airalo eSIM and pay in your local currency, and along with the QR you get the SM-DP+ address and Activation Code in plain text. This is critical when iPhone returns Could not add Cellular Plan: after clearing old profiles you enter the details manually via Enter Details Manually and sidestep most install errors. Marix support answers in your language and walks you through install if anything goes sideways.