3CX: Your Professional Office Extension, Reimagined for Hybrid Work

Take your business calls, team chats, and video conferences anywhere. Protect your personal privacy and stay connected to your team with a seamless, QR-code setup.

Business Management ›

Publisher

3CX

Your Office, Visualized

Discover the interface used by 3M+ users.

Smartphone screen showing 3CX app auto-configuration using a QR code scan

iPhone showing the 3CX app interface during an active business call with options for conference and transfer

A screenshot of the 3CX app showing a business video call between two colleagues on an iPhone

Interface of the 3CX mobile app showing a chat conversation between colleagues about project updates.

Your Office Communication, Reimagined

The tools that make this app stand out, trusted by 3M+ users.

📱

Full Office Extension

Take your desk phone anywhere. Make and receive crystal-clear calls using your office number and manage transfers with ease.

🛡️

Total Privacy Shield

Keep your personal number private. Your business ID is shown on all calls, ensuring professional boundaries remain intact.

💬

All-in-One Collaboration

Go beyond voice. Access corporate chat, schedule video meetings, and see colleague availability in one unified interface.

Loved by users worldwide

Trusted by 3M+ people who love this app.

"3CX has been a game-changer for my sales role. I can maintain a professional image by calling from my office extension while on the road, and I love that I no longer have to share my personal cell number with clients. The setup was literally instant with the QR code!"

Sarah Jenkins, Senior Sales Executive

"Managing a distributed team is much easier since we switched to 3CX. The video calling and integrated chat features allow me to stay in sync with my developers from anywhere. It is the most reliable VoIP app I have used on iOS, hands down."

David Chen, Operations Director

Review Analysis

Insights from user reviews.

Sentiment Score

28%

Negative

Summary

This mobile app receives overwhelmingly negative feedback, with users frequently reporting critical issues with core functionality and reliability. Many experience the app crashing, freezing, and failing to connect, often requiring constant reinstallation or QR code rescanning, which itself is problematic. Key features like call notifications are unreliable, leading to missed calls, and call audio quality is frequently poor, with background noise and dropped connections. Several issues, including Wi-Fi connectivity problems, CarPlay integration malfunctions, and incorrect caller ID, are reported to have been introduced or worsened by recent updates, alongside requests for missing features like dark mode and improved Apple Watch support.

Common Themes

App Functionality(19)

Call Audio Quality(7)

Missing Features & UX(7)

Call Notifications(6)

QR Code Scanning(5)

CarPlay Integration(5)

Wi-Fi Connectivity(4)

About the app

Everything you need to know about 3CX.

Description

Stay connected and make remote work easier with 3CX. This app allows you to use your office extension from anywhere and not only for calls. Schedule conferences, chat with your colleagues and video call from your iOS device. Getting Started: 1. Install the app. 2. Open it, read and accept the license agreement and authorize the permissions the app needs (camera, microphone). 3. Open your web client or desktop app and click on the QR code in the top right corner. Details on how to access your web client are in your 3CX email sent by your administrator. 4. Open your camera on your iOS device and scan the QR code shown on your screen. 5. Your extension is configured and you’re now “Ready for calls”! Important: This app is only for use with 3CX V20 and is not a standalone app. More information: https://www.3cx.com/user-manual/installation-iphone/

Latest Version

20.0.18

Size

62.3 MB

First Released

Jun 30, 2015

Take Your Business Extension Everywhere

Join 3 million+ professionals staying connected. Scan your QR code to instantly sync your office extension and start calling, chatting, and conferencing on the go.

FAQ

Frequently Asked Questions

Everything you need to know about 3CX

What is 3CX?

3CX is an app that allows users to connect to their office extension from any location. It supports calls, conference scheduling, chat with colleagues, and video calls directly from an iOS device.

How do I configure the 3CX app on my iOS device?

Install the 3CX app, accept the license, and authorize permissions. Open your web client or desktop app, click the QR code, and scan it with your iOS device camera. This configures your extension.

Does the 3CX app support video calls?

Yes, the 3CX app supports video calls from your iOS device. Users can video call colleagues and customers directly through the application to enhance communication.

Can users chat with colleagues using the 3CX app?

Yes, the 3CX app enables users to chat with colleagues and website visitors directly from their iOS device. This feature facilitates real-time text-based communication within the platform.

Is the 3CX app a standalone application for mobile?

No, the 3CX app is not a standalone application. It is only for use with 3CX V20 and requires an existing 3CX system for its full functionality.

What call management features does the 3CX app offer?

During a call, 3CX offers features such as Hold, Earpiece, Mute, New Call, Conference, Transfer, Record, and Keypad. Users can also initiate video calls directly from the call interface.

What device permissions does the 3CX app require upon installation?

The 3CX app requires permissions for the camera and microphone upon installation. These permissions are essential for enabling call functionality and video conferencing within the application.

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