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By Simnity Editorial Team 31 Aug 2026 1 min read

'Cellular Plan Cannot Be Added' eSIM Error Fix

The 'Cellular Plan Cannot Be Added' error usually means the eSIM was already installed once, the phone is carrier-locked, or there is a temporary network glitch. Check those before rescanning, since codes are often single use.

What to check

  1. Confirm the QR code has not already been used; each is typically single use.
  2. Make sure the phone is carrier-unlocked.
  3. Connect to stable Wi-Fi and try again.
  4. Restart the phone and retry, or use manual entry.
  5. If it persists, contact the provider to reissue the eSIM.

Why it happens

The error is generic, so it covers several causes. Locked phones and reused codes are the most common.

Get connected with Simnity

Ready to travel? Browse plans by country on the destinations page, read what is an eSIM, and compare costs in eSIM vs roaming.

Frequently Asked Questions

Does this error mean my eSIM is broken?

No, it usually means the code was used or the phone is locked. The provider can reissue if needed.

Will my phone support an eSIM?

Most phones from 2019 onward do, including iPhone XS and newer, recent Samsung Galaxy, and Google Pixel 3 and newer. See our device guide to confirm.

About the author

Simnity Editorial Team, eSIM & travel connectivity experts. The Simnity editorial team covers eSIM technology, international data and staying connected while travelling. Every guide is researched against official carrier and device documentation, reviewed for accuracy before publishing, and updated as plans and devices change.