It fits my front trouser pocket (but be sure to get screen protection - coins and sand may damage it otherwise). I'll simply pocket the device if I step away from my desk for a few moments, but if I'm traveling then I carry it in a soft case that attaches to my belt.

I do find it marginally uncomfortable to use as a phone - I'm accustomed to a candy bar style phone which fits my small hands better. But for all other purposes its size suits me just fine.