Supported platforms
FortiFone softclient (Android) 3.0.19 release has the following platform requirements:
- The FortiVoice phone system must use the firmware version 5.3.25 GA or higher.
- The operating system must be Android version 6.0 or higher.
Network Security 
Network Security
NOC & SOC Management
Enterprise Networking
Business Communications
Zero Trust Access 
Cloud Security 
Hybrid Cloud Security
Cloud Native Protection
Web Application / API Protection
SAAS Security
Security Operations 
SOC Platform
Advanced Threat Protection
Endpoint Security