History :
The Xperia X1 was the first phone to be released in the Xperia range.
Released 2008, it featured a high resolution display (~311 ppi pixel
density) and it was intended to fill the widening gap of smartphones as
other competitors were producing high-end smartphone devices such as HTC and Apple.
The X2 was released in the following year, which included an 8.1 MP
camera and included Wifi and GPS. By this time there was a clear shift
towards the smartphone end of the spectrum. An exception was the Xperia Pureness, a translucent phone without camera that was sold by selected retailers in selected cities. The X10 was released at the start of 2010. It was the first in the Xperia line to feature the Android operating system, where previous models ran on the Windows Mobile
OS. The phone was praised on its design, but its downfall was the
outdated version of Android which was 1.6 at a time when competitors
were on 2.1. There was a great delay in the update of the firmware, due
to the heavily skinned OS, as well as Timescape and Mediascape which
needed to be reprogrammed every time an update was made. The phone also
lacked pinch to zoom, but this was added later as well as HD video
recording. The X10-Mini and the X10 Mini Pro
were, as the name suggests, miniature versions of the X10. These were
welcomed with good response and proved to be very popular as there were
no other smartphones on the market at that time which were as small as
the two.