It's 8:30am here, and already the site has taken 70% of the entire sales for yesterday. Traffic levels are completely normal.
In the UK its a National holiday today. People are likely to be in their homes with access to a laptop or PC. I think this is why the traffic today is converting better.
According to my own data, an iPhone search referral just looks like a standard safari referral. There's no way of telling it's from a mobile device (unless someone can help me with this).
The site works perfectly in Safari on an iPhone, Mac or PC... however a sale in this instance involves entering quite lot of information. Something which would be a real pain on the iPhone.
I think the zombies are smart phone users. We get much more weekend traffic than we ever used to - I think this is the zombies returning on their home PC or laptop on a weekend.
@scottsonline I'd be interested to know if your sales process was really simple or not, and whether you think this could be a valid reason.