Certificate not trusted

After login cisco AnyConnect, IPhone has the proxy

Certificate alarm as showing in the attachments(7.JPG, 8.JPG and 4.JPG) during

SSL website Access , but no problem in windows laptop.

How is this OSAG proxy Cert issued?

# The certificate

7a6748a619f15d9f46f2e2c8021dc5a6(Root Certificate shown in 11.JPG) was issued

by Sika.

--> The proxy is using certificate

7a6748a619f15d9f46f2e2c8021dc5a6 in order to do certificate mimicking (showing

fake certificates to the end client) and since the end client trusts

certificate 7a6748a619f15d9f46f2e2c8021dc5a6 it also should trust the

mimicked certificate from the proxy which is singed with

7a6748a619f15d9f46f2e2c8021dc5a6

So client will be presented with a new fake

certificate for each SSL site it accesses. This is how the SSL traffic can be

intercepted.

This certificate is deployed with intune and get assigned but on iOS device the certificate does not work (not trusted) but on windows there is no issue.

Is there a known issue about certificate handling with iOS?