> For the complete documentation index, see [llms.txt](https://help.clickatell.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.clickatell.com/sms/getting-started/add-view-and-edit-test-phones.md).

# Add, view, and edit test phones

To test your setups in the Sandbox environment, you need to add test phones to your account. You can send as many messages to these registered test phones as you want, free of charge.

{% hint style="info" %}
You can add a maximum of **three** test phones to your account.
{% endhint %}

## Add test phones

1. Navigate to *My Workspace --> SMS.*
2. Select *Manage Test Phones*.

<figure><img src="/files/mq97g14l3mRn3IJs3glI" alt=""><figcaption></figcaption></figure>

3. Select the country this phone number is registered in and add the number of the test phone (**in international format**).
4. Click *Add*.

{% hint style="success" %}
To verify that the number you've entered is valid, an **OTP** will be sent to the number that you've entered.
{% endhint %}

<figure><img src="/files/Dj8aiZb8uKqJWmyYCetM" alt=""><figcaption></figcaption></figure>

4. Enter the OTP and click *Submit PIN*.&#x20;
5. If the PIN was entered correctly, the phone is added as a test phone to your account.&#x20;

<figure><img src="/files/VPqVgrNX1bPzYm3ppwrk" alt=""><figcaption></figcaption></figure>

6. To remove a test phone, simply click the "X" icon next to it.

{% hint style="warning" %}
If the test phone number has not been verified successfully, it will have a status of **Unverified**. You cannot use this number and have to remove it before trying to add it again.
{% endhint %}

{% hint style="info" %}
Test phones can also be set up as part of the [SMS setup wizard](/sms/getting-started/add-new-sms-setups.md).​
{% endhint %}

## View & edit test phones <a href="#view-and-edit-test-phones" id="view-and-edit-test-phones"></a>

1. Navigate to *My Workspace --> SMS.*
2. Under *My SMS Numbers,* a table lists all your long numbers and short codes.

<figure><img src="/files/NdcFRf5j6TALrKEr3vMU" alt=""><figcaption></figcaption></figure>

3. Select a number from this table to view its details, manage the API connected to it, and update the subscription linked to this number (Connect Lite only).​

<figure><img src="/files/C3TzGYjIMEXANz8NBWpT" alt=""><figcaption></figcaption></figure>


---

# 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://help.clickatell.com/sms/getting-started/add-view-and-edit-test-phones.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.