Hi Rob Moore,

Yes, I have intended to use TLS in client side to verify with server side.

I have tried to create cert files as : 

Quick Certificate Howto 

in http://kamailio.org/docs/modules/stable/modules/tls.html#tls.debugging

Then, I tried to use Blink phone to user crt file, But I see that I cant add any pem file to this.