I'm still looking for the reason.
Isn't there any way which can avoid the verification for a public certificate of authentication server using EAP-TLS.
Why should I click the accept button in initial step for authenticating with RADIUS server using EAP-TLS although the root CA of the server certificate is listed in the default trusted CA on iOS?
Is there an intermediate CA that yould not be trusted from IOS?. I have been having the same issue with a public CA certificate where the intermediate CA in this case, Entrust L1C certificate would not be trusted. I have added the intermediate certificate in IOS ans the problem was solved.