Minimum supported Operating System required for the GCAST. Any smartphones/mobile devices using operating systems below the following versions will not work/be supported. 

For the setup of the GCAST (Provisioning):

• iOS: 11
• Android: 8  

For the use of the GCAST (after the setup):

• iOS: 10
• Android: 6

The Wifi supported by the GCAST is -

• WPA
• WPA2
• WPA2-Enterprise
• WPS