> For the complete documentation index, see [llms.txt](https://help.security.gallagher.com/knowledge-hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.security.gallagher.com/knowledge-hub/products/cc-hardware/credentials/mobile-connect/troubleshoot/mobile-connect-android-update.md).

# Mobile credential stops working after an Android update

Restore Mobile Connect credentials on affected Samsung devices after an Android update.

**Reference:** Issue 131507, October 2023.

**Affected models:**

* SM-G991B
* SM-G996B

**Affected firmware versions:**

* G998BXXS9EWIA
* G991BXXS9EWIA

### Workaround

1. Remove credentials from the cardholder in Command Centre.
2. Delete the Mobile Connect app from the phone.
3. Re-install the app from the Google Play Store.
4. Re-issue or issue new credentials to the cardholder.

***

🔗 **Related**

* [03. Mobile Credential not working on Readers](/knowledge-hub/products/cc-hardware/credentials/mobile-connect/troubleshoot/mobile-connect-03-mobile-credential-no.md). General "credential not working" checklist.


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