B. Compatibility and version
The iSoftPhone is compatible with Mac OS X 10.6 (Snow Leopard)* and above.
- Snow Leopard (OS X 10.6)*
- Lion (OS X 10.7)
- Mountain Lion (OS X 10.8)
- Mavericks (OS X 10.9)
- Yosemite (OS X 10.10)
- El Capitan (OS X 10.11)
- macOS Sierra (10.12)
Version
The current version is: 4.1225-161017
1. Find the current version information under iSoftPhone / About iSoftphone.

2. Select “About iSoftPhone”, to view the version information:
This example has version: 3.5016

With running Mac OS X version 10.6 (Snow Leopard), you need to install the iSoftPhone version 2.7. Within iSoftPhone version 2.7 the following bugfixes and improvements are not supported:
- G722 audio codec quality problem fixed
- Fixed audio delay in phone conferences with more than three participants
- Presence status icon/button on the main window
- Notification of missed calls with button on the main window
- New incoming call notification in separate window among main window which can be configured in preferences
- iSoftPhone ID available in preferences
Please download iSoftPhone version 2.7 here or via our download page. For all Mac OS X versions higher then 10.7 (Lion) all above mentioned and future bugfixes and feature sets are available in the latest iSoftPhone version.