With the announcement of new ranges of low cost devices at this year's MWC in Barcelona, it's time to ask: what is the difference between a smartphone and a featurephone in today's market?

The smartphone has never been so powerful, and so boring. Innovations are moving from concepts to devices we can buy.

The differences between the execution of the phones is pretty stark. For starters, the Z is a solid piece of hardware, an object lesson in the fact that you can’t rest on gimmick alone.