---
title: Transform Any Device Into a Business Phone
description: Transform Any Device Into a Business Phone with the free OnSIP app. Take business calls on your mobile phone or computer, with no additional hardware.
---

[![logo-onsip_blue](https://info.onsip.com/hs-fs/hubfs/logo-onsip_blue.png?width=128&name=logo-onsip_blue.png "logo-onsip_blue")](https://www.onsip.com)

# Transform Any Device Into a Business Phone

Working remotely from your home office? With the free OnSIP app, you can take business calls on your mobile phone or computer, with no additional hardware required. It’s never been easier to stay connected no matter where you and your team are located—simply download and log in to the app of your choice.

The app includes:

- **HD voice: **Experience crystal clear calls with HD voice over WiFi
- **Video calling: **When you can’t meet with your clients in person, talk face to face with OnSIP’s secure voice and video calls
- **Video conferencing: **Hold your daily conference calls with unlimited video conferencing for up to 5 people
- **Real-time presence: **Instantly see which coworkers are online and call them at their extension
- **Voicemail management:** Listen to new and old voicemails, call them back, and delete them with a tap
- **Caller ID:** Always know who’s calling, just as you would in the office

![multiplatform-onsip-app-mockup-portrait](https://info.onsip.com/hs-fs/hubfs/multiplatform-onsip-app-mockup-portrait.jpg?width=576&name=multiplatform-onsip-app-mockup-portrait.jpg "multiplatform-onsip-app-mockup-portrait")

### Phones

- [Download App](https://www.onsip.com/app/download)
- [Recommendations](https://info.onsip.com/best-business-voip-phones)
- [Promo Offer](https://info.onsip.com/voip-phone-promo)

### Integrations

- [ODOO](https://info.onsip.com/odoo)
- [ZENDESK](https://info.onsip.com/zendesk)
- [HUBSPOT](https://info.onsip.com/hubspot)

### Resources

- [Help Pages](https://support.onsip.com/hc/en-us)
- [Network Status](https://www.onsip.com/network-status)
- [Educational Content](https://www.onsip.com/blog)

### Contact

- [1 (800) 801 3381](https://app.onsip.com/app/call?n=OnSIP&a=welcome%40junctionnetworks.com)
- [OnSIP Team Directory](https://team.onsip.com/)
- [Email Us](https://www.onsip.com/contact-us)

### Work with us

- [Become a Partner](https://www.onsip.com/partner)
- [Developer Tools](https://developer.onsip.com/)
- [About Us](https://www.onsip.com/about-us)

[![OnSIP](https://info.onsip.com/hubfs/template/logo-onsip_footer.png)](https://www.onsip.com)

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