> For the complete documentation index, see [llms.txt](https://guides.clickatell.com/release-notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.clickatell.com/release-notes/release-notes-archive/2021-release-notes/q4-2021/channel-updates/sms.md).

# SMS

* [10 DLC Brand Resubmission](/release-notes/release-notes-archive/2021-release-notes/q4-2021/channel-updates/sms/10-dlc-brand-resubmission.md)
* [10 DLC registration process updates](/release-notes/release-notes-archive/2021-release-notes/q4-2021/channel-updates/sms/10-dlc-registration-process-updates.md)