There is some special thing in Sony Ericsson C9xx series phones. that is all of them are high quality camera phones. the Sony Ericsson C905 was the world's first 8Mp camera phone and C902 is a 5Mp camera phone. The newest member of this family is Sony Ericsson C901 which has 5Mp camera. it will be launched on the middle of year 2009.
it's a 3G phone which supports 3.6Mbps HSDPA. the display is 2.2 inches and it supports 240 x 320 pixels resolution. C901 has a Accelerometer sensor to rotate the user interface when you turn the phone. it has 110Mb internal memory and supports up to 8GB micro SD memory cards.
C901 has Walkman quality media player with Track id music recognition feature. also it has a FM radio with RDS.
as i said earlier C901 has 5Mp camera. it supports 2592 x 1944 pixels maximum picture resolution and comes with Xenon flash. the camera application has Geo-tagging (cell-ID) and face and smile detection features.
Sony Ericsson C901 has number of built in applications. even the GPS is not available in this phone, it has Google maps application. also it has Picture editor,blogging software and a YouTube application.