For my own setup I use a personal CA: "Gert van Dijk CA". I'm using this for HTTPS and VPN successfully by importing the CA certificate into the Android keystore. I'm having trouble getting the Email ...
There doesn't seem to be a central Android resource that lists the Trusted Root CAs included in the OS or default browser (related question on SO), so how can I find out which are included on my phone ...
So here's your Average Joe at a coffee store, using the open Wifi on his shiny new Android phone. Obviously there are the same issues with using a laptop or any other device on an open network, ...