> For the complete documentation index, see [llms.txt](https://support.portsip.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.portsip.com/apps-guides/portsip-one-mobile-app.md). # PortSIP ONE Mobile App The **PortSIP ONE app** is compatible only with **PortSIP PBX version 22.0 or later**.\ It does **not** support PortSIP PBX version **16.x**. PortSIP ONE is a versatile unified communications app that allows you to manage your calling service from your **desktop computer**, **web browser**, or **mobile device**. With a single application, you can: * Make and receive calls * Send and receive text messages * Participate in group chats and share information with colleagues and contacts * View customer contact history * Manage call forwarding settings * Access voicemail messages All communication features are delivered through one secure, easy-to-use platform. *** ### Why PortSIP ONE The all-new PortSIP ONE app is designed to help you **call, message, meet, and get work done**—all from one place: * **Brings everyone together** to collaborate and deliver exceptional work * **Adapts to you**, with a personalized user experience * **Gives you flexibility**, allowing you to choose how and where you work *** ### Downloading PortSIP ONE #### Mobile Devices You can download PortSIP ONE directly from your mobile device: * Open the **App Store** (iOS) or **Google Play Store** (Android) * Search for **PortSIP ONE** * Download and install the app #### PortSIP Website You can also download the latest versions of PortSIP ONE from the [PortSIP website](https://www.portsip.com/download-portsip-one/), which provides installers and links for supported platforms.