Requesting an SSL certificate for the Communication Module
You can request an SSL certificate to replace the self-signed SSL certificate that is installed by default when you install BlackBerry Enterprise Service 10. You should use an SSL certificate that is issued by a CA that is already trusted by iOS devices and Android devices.
For more information about the certificates that are trusted by iOS devices, visit support.apple.com to read article HT4415 for iOS 4 or article HT5012 for iOS 5.
For more information about the certificates that are trusted by Android devices, check the “Trusted CA” section of the Android device.