What should I do if I see "Unable to complete cellular number change"?

This error usually relates to eSIM storage limits, device settings, or network conditions. Please check the following causes:

Cause 1: Too many eSIMs installed on your device

How to check:

Go to Settings → Cellular and look at the list of installed eSIMs.

Different models have different limits (e.g., iPhones can store 5–10 eSIMs).

Solution:

Remove any unused eSIMs (see "Remove eSIM" for steps), then try installing again.

Cause 2: Cellular Data is turned off

How to check:

Go to Settings → Cellular and make sure the Cellular Data toggle is on.

Solution:

Turn on Cellular Data to ensure your device's network functions are active, then try installing the eSIM again.

Cause 3: The eSIM was previously installed on this or another device

How to check:

Go to Settings → General → About and scroll down to ICCID.

Compare it with the ICCID of the eSIM you're trying to install. If it already exists, the eSIM was installed before.

Solution:

Most eSIMs can only be installed once. • If it was installed before, look for it in your Cellular plan list and reactivate it. • If you can't find it, contact your provider to check the eSIM's binding status.

Cause 4: Unstable internet connection during installation

How to check:

Installing an eSIM requires a stable Wi‑Fi connection. Public Wi‑Fi, ship Wi‑Fi, or weak networks can cause installation to fail.

Solution:

Switch to a stable private Wi‑Fi or mobile hotspot, turn off VPNs or proxies, restart your device, and try again.

Additional tips

If none of the above works:

• Update your device to the latest iOS version
• Contact support with your order number and a screenshot of the error for further assistance