Settings > Security > Settings Configuration Manager Security

Settings Configuration Manager Security
Proceed as follows:
Using the Configuration Manager (page Settings > Personal > Security)
Apps
Installation of apps from unknown sources
The telephone can allow the installation of apps from unknown sources (e. g. App Shop, websites, e-mails, etc.)
 
Caution: Apps and files downloaded from the Internet can contain viruses which can damage your telephone.
To protect your telephone and your personal data, we strongly recommend you only download apps and files from trustworthy sources.
  Unknown sources
Important: If you install additional apps, the telephone's functionality may be affected, including loss of use. When the Auerswald service team or specialised dealer checks the telephone, it is reset to its factory settings. This process removes any previously installed apps and data, so these must then be reinstalled separately.
Note: Click  > Settings > Device > Apps > app name to check, which of your telephone's functions and which personal data an app can access.
 
 The installation of apps from unknown sources is alllowed.
 

COMfortel 1400 IP/2600 IP/3600 IP - Firmware V2.8 - Advanced Information V08 12/2020