> ## Documentation Index
> Fetch the complete documentation index at: https://docs.unify.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# SMS

> Text your assistant like you'd text a colleague

Once your assistant has a [phone number](/communication/phone-calls), SMS just
works — text the number and your assistant texts back.

## Setup

SMS shares the assistant's phone number, so there's nothing extra to
configure. If you've added a phone number to your assistant, you can already
text it. If not, see [Setting up channels](/communication/setup).

## What it's like

* **Texts feel like texts.** Your assistant writes short, natural messages —
  and if it has a lot to say, it splits things into a few quick texts rather
  than sending you a wall of words.
* **It's the same conversation.** Text "how's that report coming?" and your
  assistant knows exactly which report, even if you asked for it over email
  last week.
* **It can text first.** Ask your assistant to remind you about something by
  text, or to message you when a task is done.

## Good to know

* SMS is **text only** — for photos, documents, and voice notes, use
  [WhatsApp](/communication/whatsapp) or [email](/communication/email)
  instead.
* Like calls, SMS works between your assistant and its **known contacts**.
  Strangers texting the number get a polite pointer to the Console rather
  than a conversation.