Is that a smartphone or a tablet?

The line between the smartphone and slate tablet is getting blurry these days. The latest smartphone on the Verizon network is the Motorola Droid X and this huge smartphone resembles a small Android tablet. The Droid X has a 4.3" screen.

The Sprint Evo 4G by HTC is also a large slate-smartphone that looks like a mini tablet that could be perfect for the mobile web browser. This device is the first 4G smartphone in North America (and I'm sure it won't be the last). Like the Droid X, the Evo 4G has a 4.3" screen and it runs Google Android.

Dell recently started showing off its Streak, an Android tablet that has a 5" screen. The Streak is a tablet and it's also a phone. This is one of the largest devices so far that combines the capabilities of a touch-screen tablet and a phone, but we know that Samsung and several other manufacturers will soon be releasing similar devices.

How do we classify these relatively "large" devices? Should they be considered smartphones or slate tablets that are capable of making phone calls?