Just a quick info: Sony Xperia P has some series name depend on regional / country and also data network carrier. IT called as Sony LT22 (general), Sony LT22i Nypon, or if in North America usually uses Sony LT22a. Although in some of the secs are difference between those two (three), but for the User Guide aka the Manual of Sony Xperia P, it’s all the same.
Sony Xperia P seems to be designed as high-end Smartphone. It uses LED backlit LCD Capacitive touchscreen for the display at 4.0 inches with 540 x 960 pixels. It about 275 pixels density. This is quite large actually, but if you compare to the latest Smartphone from other vendors such as HTC with HTC One X or even the newest Samsung Galaxy S3 which have 4.7″ and 4.8″, the Xperia P is not quite large enough.
The 4″ display also has scartch resistant glass protection and installed with Sony Mobile BRAVIA Engine for better bright contrast view and completed with Sony WhiteMagic technology. For the UI it uses Timescape User Interface. The touch tablet form factor with 122 x 59.5 x 10.5 milimeter is chosen as the design of this Xperia P. Along with the 1305 mAH Lithium Ion battery capacity, this device has about 120 grams on weight measure.