Remove header text (title and description) on mobile theme?

Are you using JetPack mobile? If so, I think you need to do some additional CSS to apply – see:

https://jetpack.me/2013/06/27/customize-mobile-theme/

Great, thanks! I figured I need to add the following to the mobile theme CSS (I’m putting it here for future reference):

.mobile-theme
.mobile-index-title.entry-title {
}

#site-title {
	display: none;
}

#site-description {
	display: none;
}