Download the certificate file and save it in the device memory
Open the downloaded file (from the file manager or from the list of downloaded items in the browser) or go to
"WiFi Settings" -> "Advanced / Additional" -> "Install network certificates" and select the certificate for installation
If the screen lock is set, the system will ask you to unlock it (enter pattern, pin, etc.). If the system has no lock set,
the system will prompt you to set a screen lock, e.g. password, pattern, pin. Set a screen lock.
Enter the name of the certificate, e.g. pcz-eduroam-ca and select "Used by" Wi-Fi and click "OK"