eSIM Install Failure: Error Messages and Fixes

TL;DR

• “This device doesn’t support eSIM” → Check device and carrier unlock.
• “Cannot add profile” → Check Wi‑Fi, storage, whether QR was already used.
• “Activation failed” → Check data roaming, APN, start condition (e.g. after arrival).

“This device doesn’t support eSIM”

• Cause: Device doesn’t support eSIM or is carrier locked so overseas eSIM is blocked.
• Fix: Check eSIM compatible devices. Ask carrier about overseas eSIM / unlock, then retry.

“Cannot add cellular plan” / “Cannot add profile”

• Cause: Unstable Wi‑Fi, low storage, or QR/code already used (one-time).
• Fix: Use stable Wi‑Fi, free up space, or use manual entry (SM‑DP+) if provider supports it.

“Activation failed”

• Check data roaming ON for eSIM, cellular data set to eSIM, APN if required. If plan starts “at first local connection,” wait until you’re in the destination.

See eSIM not working and Data not working abroad.