Xperia X10 mini and X10 mini unveiled by Sony Ericsson

Two really small cell phones, the Xperia X10 mini and the X10 mini pro, were unveiled by Sony Ericsson at the Mobile World Congress.

Although both models are condensed versions of the Xperia X10, the most significant difference between the two Android-based devices is that the Xperia X10 mini pro has a QWERTY keyboard that slides out from underneath, while X10 mini does not.

For those who believe in the new found tech-mantra that ‘small is sleek’, it may be worthy of a note that these two cell phones are just about the size of a credit card.