> For the complete documentation index, see [llms.txt](https://docs.replicacyber.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.replicacyber.com/admin-guide/4.4-admin-guide/sms-devices-physical-phone-relay.md).

# SMS Devices (Physical Phone Relay)

## SMS Devices Introduction

SMS Devices extend telephony by connecting real mobile phones to the platform. Use them when software-defined numbers are not enough for your workflow.

Talk to your administrator to procure and configure physical phones.

{% hint style="info" %}
SMS Devices are an optional feature subscription and require advanced configuration.
{% endhint %}

## SMS Device / Telephony Management

SMS Devices use a physical phone together with Replica telephony features. The phone runs a Replica Android app and uses a software-defined relay number from providers such as Twilio or Bandwidth.

This setup can help when websites reject software-defined numbers, especially during account creation or two-factor authentication flows.

### Configuration

{% stepper %}
{% step %}

### Open SMS Devices

Open `Telephony` from the `Administration` menu, then select the `SMS Devices` tab.

This page shows the configured SMS devices.
{% endstep %}

{% step %}

### Create SMS Device

Click `Create SMS Device`.
{% endstep %}

{% step %}

### Provide Device Details

Enter the physical phone's `Device Number`, a `Name`, and an optional `Description`. Then select a `Relay Number`.

Use a relay number that is not already assigned for normal software-defined messaging. One relay number can serve multiple SMS devices.
{% endstep %}
{% endstepper %}

## Android App

The Android app is available in the Google Play Store and runs on supported Android devices.

After you create the SMS device in Replica, install the app on the target phone and configure it with the selected `Relay Number`.

The app does not support RCS. Disable RCS on the phone to force SMS delivery.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.replicacyber.com/admin-guide/4.4-admin-guide/sms-devices-physical-phone-relay.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.