The 3CX client for iOS only works with 3CX Phone System v15.5. It will not work with other commercial or open-source PBXs.

This app allows you to make and receive office calls on your device from anywhere. The app fully supports PUSH, allowing your device to be on standby when not in use and save battery life. When an incoming call occurs on your office extension, your device will 'wake up' and notify you as it would with a regular GSM call.

Benefits include:

- Make and receive calls on your smartphone/tablet from your office extension.
- One number concept. Calls made to your office extension will ring on your iOS device.
- Reduced mobile phone bill; call colleagues via the 3CX client rather than via the mobile network.
- Seamless out of office or in office detection.
- Transfer & Hold calls.
- Easily change your status (available, busy etc.).
- Take multiple calls simultaneously.
- View the status of your colleagues.
- Easily setup conference calls.
- Instant Corporate Chat.

The 3CX client requires Apple PUSH to be configured by your organization's PBX administrator.

What’s New

Version 15.5.18

Full redesign of 3CX Chat. It’s look is now more messenger like.
“Chat” is now called “Messages”
Added an unread message counter.
Moved the “More” menu and replaced it with a slide-in navigation button located at the top left of the app.
Where the “More” menu previously was, “Messages” for easier access to 3CX Chat.
Added the ability to tap your avatar in the options menu to quickly navigate to the “Accounts” page.
Updated PJSIP to a newer version for much better IPV6 support.
The keypad is no longer useable if the network state is “No network”.
“Schedule Conference” is now called “Conference”
Reordered several of the list items in the options menu.
“QR Provisioning” has now been renamed to “Scan QR Code”
Fixed issues related to TLS and no audio in a certain networking condition. (The fix has a server side dependency and so it will be available in the post SP6 3CX PBX Update)
Fixed several issues related to IPV6 when used with various transport modes.
Removed the “i” help icon from all menus.

Ratings and Reviews

3.8 out of 5
605 Ratings

605 Ratings

TP5555555555 ,

Good app but MAJOR flaw

Good app but there’s no way to keep it from ringing other than disabling the entire account. Which the problem doing that is if you also want to use it for call forwarding after hours then you’d have to remember to re-enable it or else you’d be missing calls and not knowing it. 3CX needs to simply make an option to set with that presence whether you want to also ring the mobile app. So freaking simple.

And while I’m at it, can you guys PLEASE add an option so people can actually see their presence ON THE PHONE?? Despite what you want people to use, the vast majority of people are going to want to control most things from their desk phone, NOT their mobile app. Come on guys, think practical on this one.

Stymyx ,

Great when it works, but it’s horribly unreliable

I really want to love this app, but I can’t. When it works, it works great! The problem is that it’s just not reliable. I use this app only when I’m in my office with my iPhone connected to my office’s wi-fi. Frequently (but not always) when my iPhone is connected to my AirPods and I launch it and make a call, the call connects and I can hear the recipient, but the recipient cannot hear me. When I click the speaker button on the “in-call” screen, it says it’s connected to the AirPods, yet the recipient can’t hear me. And it’s not just with Apple’s Bluetooth AirPods. This also frequently happens with Apple’s wired EarPods. In addition, I can never successfully make 2 calls in a row without having to force the program closed. The first call connects, but the second call doesn’t. Basically, I have to force-close the app after every single call. Occasionally even a force-close doesn’t help either and I end up having to reboot the phone for the app to start working again. This is all on a brand-new iPhone XS Max running iOS 12.1. I had the same results with my previous iPhone 8+.

Travenous ,

Par app

This would be substantially better if you can stop notifications on the cell phone only. My job has 3CX as the office line for me and while it is convenient to have it on my phone for emergencies. I don’t always use it on my phone. There is no way at all to stop notifications unless you put the client on “do not disturb”. The problem is that it also sets he client on my computer at work to “do not disturb” as well. If I utilize that feature and forget to change it every day, I am either missing calls while at work or getting calls when I am not at work on my cell. Very irritating and it should be an easy fix...


15.1 MB

Requires iOS 10.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, iPad Pro (9.7‑inch), iPad Pro (9.7-inch) Wi‑Fi + Cellular, iPad (5th generation), iPad (5th generation) Wi‑Fi + Cellular, iPad Pro (12.9‑inch) (2nd generation), iPad Pro (12.9‑inch) (2nd generation) Wi‑Fi + Cellular, iPad Pro (10.5‑inch), iPad Pro (10.5-inch) Wi‑Fi + Cellular, iPad (6th generation), iPad Wi-Fi + Cellular (6th generation), iPad Pro (11-inch), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro (12.9-inch), iPad Pro (12.9-inch) Wi‑Fi + Cellular, iPad mini (5th generation), iPad mini (5th generation) Wi-Fi + Cellular, iPad Air (3rd generation), iPad Air (3rd generation) Wi-Fi + Cellular,and iPod touch.


English, Bulgarian, Czech, Danish, Dutch, French, German, Italian, Japanese, Norwegian Bokmål, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Tagalog, Turkish, Ukrainian

Age Rating
Rated 4+
Copyright ©2018 3CX Ltd.


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