Basic Features
The Sony Ericsson P910 is tri-band GSM. However frequencies and firmware
will depend on region. Europe and Asia will be supplied with the P910i (GSM
900 / 1800 / 1900), China the P910c (GSM 900 / 1800 / 1900), and North
and Latin America the P910a (GSM 850 / 1800 / 1900).
Functionally, however, the models are similar. All models use the ARM
9 processor to run the Symbian OS v7.0s and the established UIQ user interface.
Symbian OS is the open standard operating system licensed by the world's
leading mobile phone manufacturers. It's specifically designed for phones
by providing a robust multitasking kernel, integrated telephony support,
communications protocols, data management, and advanced graphics support.
Version 7.0s adds many features to previous editions, however nothing
ground breaking. New features include Multiple PDP, which allows users
to use multiple networks simultaneously. For example, users can surf the
web using GPRS on one account, while download email from GSM data on another.
The OS has the ability to intelligently choose network connections based
in signal strength, allowing for multiple billing accounts. And multi-threaded
multimedia framework (MMF) offers improved audio, video, and imaging.
 Additionally,
the P910 comes with a 1260 mAh Li-Polymer battery that has impressive optimal
talk and standby times of up to 13 and 400 hours respectively.
Screen
As mentioned earlier, the surface of the display is touch screen, with
back-light illumination. Text may be entered using natural handwriting over
the whole screen. A marker on the middle of the screen determines where text
entries should be written: lower case letters are entered below the marker,
uppercase letters in line with it, and numerals above it.
The P910 has an improved color depth over the P900 as well. Its screen
is capable of displaying a 262K color 18-bit depth, compared to the 65K
color 16-bit depth of the P900. It should be noted that only picture
applications use the complete 262K colors in full screen mode. All other
cases use only 65K. Resolution size is dependant on operation mode: flip
closed (208 x 208 px), or flip open (208 x 320 px). Additionally, light
intensity levels for active and standby screens are user adjustable.
The P910's TFT (Thin Film Transistor) LCD allows for quick response and
refresh rates when compared to older STN (Super Twisted Nematic) matrices.
TFT, as opposed to STN, has the circuit transistors placed on the glass
at the pixel location instead of the need to scan the pixel location. This
results in much clearer displays while greatly increasing the response times,
allowing for very fast refresh rates. Rates needed for using the P910's
screen as a viewfinder and playing action-packed games.
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