You will see the screen clearly even when you are exposed under the hot sun.

Yerp. I'm hesitating between getting those two because for me, RAM matters. I'm using XMiniPro right now with 512mb of ram, it's not enough. So I'll wait for XP to come out and test it myself and decide.

because that is a DEMO unit, zillions of customers tested here n there so its normal if u see the phone lags.

you put WTS those free stuff... get your money back...

Conventional LCD consists of 3 sub pixels in a single pixel which are red, green, blue (RGB). In order to produce a white color, light is shine through all three pixels (RGB). Power consumption is high as you need to shine light to all three pixels. White magic technology added a white pixel into the sub pixels which means now you have RGBW. In this case when you need a white color, you only need to shoot the light into white pixel instead of RGB pixels. By doing this, power consumption can be lower.

For detail information
Sony Mobile -  Introducing white magic

But AP won't give la...  ha ha..

Some small review:
Batt life is decent if not good considering dual core and 1300mah batt.
Can last the average office day
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My display settings
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3 emails, 2 of them 1 hr sync interval.
Some FB.. LINE.. Whatsapp. Some friends playing the features.. Hhaha! Moderate use.

XPU size comparing to IP4S.

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is not small, is difference ratio

1) Not all, some can, some with lag and some even cannot run (based on user inputs and not my experience).
2) You mean HD videos? Yup it can record 1080 video.
3) Nope, it's qHD.

hmm , what is the major difference between P and S ? btw sony mobile facebook fan page releasing something soon , any idea what will it be ?