Gmail on a Sony Ericsson k700i

Because I had so much trouble finding it via Google:

If you want to use the new gmail app on your k700i (instead of using the built-in browser or Opera Mini), you need to install the SSL CA certificate. Go here:

https://www.verisign.com/cgi-bin/support/rootcert/getrootcert.cer

Save the .cer file, transfer to your phone via bluetooth (or whatever), and like magic, it works.