# Preview

<figure><img src="https://3352617162-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F90tV7pYflEQdiAr2VfWu%2Fuploads%2FWcDuaA8m1Jw0pCfOudVF%2FFile%20(1).jpg?alt=media&#x26;token=c958b255-308a-49b3-b1db-3d46031fb0ae" alt="" width="188"><figcaption></figcaption></figure>

* Install the Natively Preview app from [App Store](https://apps.apple.com/us/app/natively-preview/id1626045691) and [Google Play](https://play.google.com/store/apps/details?id=com.ncnp.app)
* Open your app details screen, and click the App you want to run in Preview.
* **(Important)** If you are using the [Push Notifications](https://docs.buildnatively.com/natively-platform/features/notifications/onesignal-notifications) feature, set "preview" in [**mode (headers)**](https://docs.buildnatively.com/guides/integration/how-to-get-started#mode-headers-optional) if you're using the bubble plugin or [set it in JS SDK](https://docs.buildnatively.com/guides/integration/how-to-get-started#javascript-sdk)

{% hint style="danger" %}
**The following** native features **will not work** in the Natively Preview app:\
\- Background Location\
\- In-App Purchases\
\- Deeplinks\
\- Facebook/AppsFlyer analytics\
\- Apple's HealthKit\
\- Social Auth\
\- Admob
{% endhint %}

{% hint style="danger" %}
The appearance settings you have configured **will not be reflected** in the Natively preview app.
{% endhint %}

{% hint style="warning" %}
Natively Preview app operates using a pre-configured sandbox environment. Consequently, devices running the Preview app will not appear as new subscriptions in your personal OneSignal dashboard. To test your specific OneSignal integration and see active subscriptions, you must generate your own build of your application.
{% endhint %}


---

# Agent Instructions: 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:

```
GET https://docs.buildnatively.com/natively-platform/preview.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.