Let’s talk about hardware first and foremost.
The phone obviously looks like the X10, but is thinner, lighter and has a bigger screen. The X12 will contain a Qualcomm MSM7230 (Scorpion) processor, which is a 800MHz ARMv7 that is capable of reaching 1GHz according to the processor spec sheet. The processor’s features include an embedded DSP(GSM, GPRS, EDGE, UMTS/WCDMA, HSDPA 14.4Mbps, HSUPA 5.76Mbps baseband), Embedded gpsOne GPS module, gpsOneXTRA Assistance, Dedicated audio subsystem supporting 5.1 surround, 12-megapixel camera support, Integrated 2D/3D graphics GPUs with support for OpenGL ES 2.0, OpenVG 1.1.
As for software, the X12 will most likely launch with with Android 2.2 (Froyo) and will recieve a 2.3 update in the summer of 2011. This could frustrate potential owners of this device, but Mobile Review seems more optimistic as they say “for Sony Ericsson, being just one OS version behind the others on the release date of X12 is a step forward.” A rather sarcastic remark, considering the company had sold devices with Android 1.6 for way too long.
Created by http://www.sonyinsider.com/2010/11/30/the-xperia-x12-completely-detailed-by-mobile-review/