--What's up with that? My guess is that local data is still too ragged for the mobile user to depend on it. Either that, or "local" was defined in a tightly restrictive way for this study.--
I think the future of local data on phones is through built-in maps and GPS systems. Many phones come with these maps pre-installed, so the searches never show up on any log because they're done entirely offline.
In fact many people deliberately load the maps onto their phones from a PC at home so they don't have to download data on the move. On-board maps work even if the phone is out of network coverage, they don't require download times, and they don't incur download costs either.
--They claim to be able to determine what is a cell phone and what is a smart phone!? I would like to know how they can even remotely make that claim. --
Well, you can often tell from a connection which model of phone someone is using. I've run sites which have mobile visitors and the logs sometimes contain terms like "nokia whatever" or "motorola whatever".
But the words smartphone and cellphone are becoming interchangeable though. In strict technical terms, a smartphone is a phone that contains a multi-tasking computer which can accept user-installed native applications. A smartphone is a PC in your pocket, effectively.
In practice, most people just use phones and smartphones for the same things, but smartphones allow them to do many things at once as they're multitasking. The better computing power of smartphones also allows certain extra things like advanced game graphics, PC-level web browsing etc.
Most smartphones sold today look and work exactly like normal phones, and most smartphones aren't even called smartphones in their marketing.
The Symbian platform is by far the most popular smartphone platform in the world, its market share is twice as big as all its rivals put together, but no one has ever heard of the name because no Symbian smartphones are ever sold under that brand. They're mostly just marketed by the manufacturesrs as if they were normal phone models.
In fact, most smartphone owners don't even know they do own a smartphone.
The poster above mentioned the Nokia N95, but are they aware that the same computing platform (minus the expensive camera and GPS) is also sold as the Nokia 6120 for about one third the price?