Sony Ericsson K750i vs Sony Ericsson W550i

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K750i compared with W550i

	Sony EricssonK750i	Sony EricssonW550i
Overview
Released
Released	May 2005	2005
Display
Screen size
Screen size	1.8″	1.8″
Resolution
Resolution	220 × 176	220 × 176
Sharpness
Sharpness	157 pixels per inch	157 pixels per inch
Panel
Panel	LCD	LCD
Display type
Display type	1.8-inch TFT LCD with 262,000 colours	TFT with 262,000 colours and white backlight
Display features
Display features	–	Landscape orientation for compatible games and full-screen video
Performance
Storage
Storage	38 MB	256 MB (better)
Storage type
Storage type	Up to 38 MB of user-free internal storage, depending on software and file content; supplied 64 MB Memory Stick PRO Duo; March 2005 white paper supports cards up to 1 GB	Up to 256 MB internal user memory, depending on software and file content; no memory card slot
Cameras
Main camera
Main camera	2 MP (better)	1.3 MP
Ultra wide camera
Ultra wide camera	None	None
Telephoto camera
Telephoto camera	None	None
Optical zoom
Optical zoom	None	None
Main camera
Main camera	2 MP autofocus camera with sliding lens cover and LED photo light	1.3 MP camera with picture light, night mode, self-timer and 4× digital zoom; still images up to 1280 × 1024 pixels
Video recording
Video recording	MPEG-4 and 3GPP video recording	176 × 144 or 128 × 96 pixels
Camera features
Camera features	Landscape camera interface, self-timer, panorama and burst modes	–
Battery and charging
Battery
Battery	900 mAh	900 mAh
Wireless charging
Wireless charging	None	None
Battery life detail
Battery life detail	3.6 V 900 mAh battery; maker claims up to 9 hours of talk time and 400 hours of standby	Up to 30 hours music playback with telephone function switched off, as stated in the maker announcement
Design
Type
Type	Standard	Standard
Weight
Weight	99 g (better)	120.1 g
Thickness
Thickness	20.5 mm (better)	22.5 mm
Height × width
Height × width	100 × 46 mm	93 × 46.5 mm
Materials
Materials	–	Swivelling body with replaceable Style-Up covers
Buttons
Buttons	–	Numeric keypad behind rotating screen, dedicated Walkman and camera buttons, and landscape game buttons
Size unfolded
Size unfolded	Later June 2006 maker comparison lists 100 × 46 × 20.5 mm; original March 2005 white paper lists 18.5 mm body thickness and 19.5 mm at the camera lid	–
Colours
Colours	Oxidized Black, Blasted Silver	–
Speakers
Speakers	Built-in speaker; FM radio with RDS and MP3/AAC media playback	Two stereo speakers, Mega Bass and stereo widening; HPM-70 stereo headset supplied; FM radio with RDS
Software
Operating system
Operating system	Proprietary software	Proprietary software
Software at launch
Software at launch	Sony Ericsson proprietary phone software with Java applications	Sony Ericsson proprietary software with Java MIDP 2.0 and Access NetFront HTML browser
In the box
In the box	64 MB Memory Stick PRO Duo, stereo headset, USB cable, charger and PC software	–
Connectivity
Mobile network
Mobile network	GSM 900/1800/1900 with GPRS multislot class 10	GSM/GPRS 900/1800/1900
Bluetooth
Bluetooth	Bluetooth wireless technology	Bluetooth 2.0; headset, hands-free, file transfer and multiplayer gaming support
USB
USB	USB cable connection through the Fast port; infrared transceiver	Fast Port connector with USB mass storage; infrared connectivity