# Setting Up Test Devices

{% hint style="warning" %}
The **Test Devices** tab allows you to test DT Exchange implementations only. To test DT FairBid implementations, see [Test Suite](/dt-fairbid/fairbid-sdk/tools/test-suite.md).
{% endhint %}

You can test how your placements display on a variety of test devices. Set up and manage test devices for your app from the **Test Devices** tab of the **App details** screen.

<div align="left" data-with-frame="true"><img src="/files/CGiuUBGJ2zeIzi9rtN6s" alt="Test Devices for apps"></div>

## Adding a Test Device

You must provide the advertising IDs of the devices you want to test. When you finish adding test devices, DT immediately begins filling ad requests from your app on the test devices with [DT test ads](#identifying-test-a-ds).

Before you add a test device, complete the following tasks:

* Locate the Advertising ID of the test device:
  * For iOS devices, locate the Apple identifier for advertisers (IDFA).
  * For Android devices, locate the Google Advertising ID (GAID).
* Install your app on the device.

To add a test device:

1. On the **Test Devices** tab of the **App details** screen, click **Add device**.\
   A new row appears for the new device.

<div align="left" data-with-frame="true"><img src="/files/6349eef8cdebdd99dbe49869cadcb0b51a292e02" alt="Row for new test device"></div>

2. Enter the **Advertising ID** and a brief description of the device.
3. Click **Add**.
4. Repeat Steps 1–3 until you have added all your test devices.

## Identifying Test Ads

Once you finish adding test devices for your app, DT immediately begins fulfilling ad requests for the test devices with the following DT test ads.

| PLACEMENT TYPE            | DT TEST AD                                                                              |
| ------------------------- | --------------------------------------------------------------------------------------- |
| Banner                    | <img src="/files/17fe97694efc90670c9848cb51dad39822f53e2a" alt="" data-size="original"> |
| MREC                      | <img src="/files/3cc238fc67af2d3b79185c093028b58d5c8b145c" alt="" data-size="original"> |
| Interstitial and Rewarded | <img src="/files/8e41a297978c2685491df8e4467a0d02bd0d693c" alt="" data-size="original"> |

## Deactivating a Test Device

Deactivating a test device removes it from receiving DT test ads.

To deactivate a test device, click the dot menu for the device and click **Deactivate**.\
The deactivated test device appears as **INACTIVE**.

<div align="left" data-with-frame="true"><img src="/files/d9412cb7f38935d44480307898a99b47a3397d0a" alt="Deactivated test device"></div>

## Re-Activating a Test Device

To re-activate an inactive test device, click the dot menu for the inactive device and click **Activate**.\
The device displays as an active test device.

## Deleting a Test Device

If you no longer want to use a device as a test device, delete it from the list of test devices for the app. Otherwise, if it remains an active test device, DT continues to fulfill ad requests from the device with DT test ads.

To delete a test device, click the dot menu for the device and click **Delete**.\
The device no longer receives test ads.


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