Installing the root CA on iOS
The root CA must be installed on the client device to ensure that the client trusts server certificates that are signed by your private CAs.
About this task
To establish trust for your server certificate, you must install the trust anchor certificate (root CA) on the client device.
Note: Only
the root CA certificate (trust anchor) must be installed. You do not
need to install any other certificates, such as intermediaries, on
the device.