---
title: "How to configure device emulation per scenario"
slug: "how-to-configure-device-emulation-per-scenario"
updated: 2026-05-26T06:06:48Z
published: 2026-05-26T06:06:48Z
canonical: "helpcenter.autify.com/how-to-configure-device-emulation-per-scenario"
---

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

# How to configure device emulation per scenario

When creating a new scenario or editing an existing one, you can configure it to emulate a mobile device environment on a per-scenario basis.

### Configuring When Creating a New Scenario

1. Click **New Scenario** on the scenario list screen.
2. Click the **Window Size** dropdown list, and select the device you want to test from the **Device Emulation** section. ![](https://cdn.document360.io/c040854c-2c75-49d0-98e1-43f462e8657e/Images/Documentation/スクリーンショット 2026-05-19 15.22.00.png?sv=2026-02-06&spr=https&st=2026-10-27T19%3A39%3A54Z&se=2026-10-27T20%3A39%3A54Z&sr=c&sp=r&sig=jCz4F%2FhGiHf%2FpgcH%2BodhwicJ4V%2BOTwY8mVcbTBUcxlQ%3D)

* When a device is selected, the window size is automatically set to the viewport size corresponding to that device. Devices cannot be selected if the default browser is set to Firefox.
3. Click **Start** to begin recording.

### Changing Settings for an Existing Scenario

1. Open the target scenario on the scenario list screen.
2. Click **Edit** (![](data:image/svg+xml;base64,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)) next to the scenario name.
3. Click the **Window Size** dropdown list, and select the device you want to test from the **Device Emulation** section.
4. Click **Save** to apply the changes. * You can also edit directly by clicking **Edit** (![](data:image/svg+xml;base64,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)) on the corresponding row of the scenario list screen.

### Application Priority for Device Emulation

Device emulation during test execution from the scenario screen or during recording is applied in the following order of priority:

1. **When device emulation is specified in the Nexus application settings (Highest Priority)**
  1. The device emulation settings under **Settings** > **Recording and Local Execution Settings** in the sidebar will be applied with the **highest priority**.
2. **When not specified in the Nexus application, but specified in the scenario**
  1. The device emulation configured for each scenario will be applied.
3. **When not configured in both the Nexus application and the scenario**
  1. Device emulation will not be applied; only the window size specified in the scenario will take effect.

On the other hand, when executing a test plan, the device emulation configured in the test plan's execution environment takes precedence. If device emulation is not configured in the test plan execution environment, the **device emulation specified in the scenario** will be applied, regardless of the Nexus application settings.