Screen size
AspenWinner: 2.4"+21%
K5501.9"
Quick verdict
Aspen leads the measured specs 8-1.
Measured wins
Aspen
8
spec wins
Overall winner
Ties
3
equal specs
K550
1
spec wins
Screen size
Technology
Aspen
GSM / HSPA
K550
GSM
2G bands
Aspen
GSM 850 / 900 / 1800 / 1900
K550
GSM 850 / 900 / 1800 / 1900
3G bands
Aspen
HSDPA 900 / 2100 , HSDPA 850 / 900 / 2100
K550
-
Speed
Aspen
HSPA 7.2/2 Mbps
K550
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
3.5mm jack
SD card
equal specsStereo speakers
-
GPRS
Aspen
-
K550
Class 10
EDGE
Aspen
-
K550
Yes
Announced
Aspen
2010, February. Released 2010, July
K550
2007, February
Status
Aspen
Discontinued
K550
Discontinued
Dimensions
Aspen
117 x 60 x 12.5 mm (4.61 x 2.36 x 0.49 in)
K550
102 x 46 x 14 mm (4.02 x 1.81 x 0.55 in)
Weight
Aspen
130 g (4.59 oz)
K550
85 g (3.00 oz)
Keyboard
Aspen
QWERTY
K550
-
SIM
Aspen
Mini-SIM
K550
Mini-SIM
Type
Aspen
TFT resistive touchscreen, 65K colors
K550
TFD, 256K colors
Size
Aspen
2.4 inches, 17.8 cm2 (~25.4% screen-to-body ratio)
K550
1.9 inches, 11.4 cm2 (~24.2% screen-to-body ratio)
Resolution
Aspen
320 x 240 pixels, 4:3 ratio (~167 ppi density)
K550
176 x 220 pixels (~148 ppi density)
Other
Aspen
XPERIA Panels
K550
Wallpapers, screensavers
OS
Aspen
Microsoft Windows Mobile 6.5.3 Professional
K550
-
Chipset
Aspen
Qualcomm MSM7227 Snapdragon S1
K550
-
CPU
Aspen
600 MHz ARM 11
K550
-
GPU
Aspen
Adreno 200
K550
-
Card slot
Aspen
microSDHC (dedicated slot), 4 GB included
K550
Memory Stick Micro (M2), up to 2 GB
Internal
Aspen
256MB RAM, 256MB ROM, 100MB
K550
77MB
Phonebook
Aspen
-
K550
1000 x 20 fields, Photo call
Call records
Aspen
-
K550
30 received, dialed and missed calls
Single
Aspen
3.15 MP
K550
2 MP, AF
Video
Aspen
480p@15fps
K550
QCIF
Features
Aspen
-
K550
LED flash
Other
Aspen
No
K550
No
Loudspeaker
Aspen
Yes
K550
Yes
3.5mm jack
Aspen
Yes
K550
No
Alert types
Aspen
-
K550
Vibration; Downloadable polyphonic, MP3, AAC ringtones, composer
WLAN
Aspen
Wi-Fi 802.11 b/g
K550
No
Bluetooth
Aspen
2.1, A2DP
K550
2.0, A2DP
Positioning
Aspen
GPS, A-GPS
K550
No
Radio
Aspen
Stereo FM radio, RDS
K550
Stereo FM radio, RDS
USB
Aspen
microUSB 2.0
K550
2.0
Infrared port
Aspen
-
K550
Yes
Sensors
Aspen
K550
Browser
Aspen
WAP 2.0/HTML (IE), RSS feeds
K550
WAP 2.0/xHTML, HTML(NetFront)
Other
Aspen
MP3/eAAC+/WAV/WMA player MP4/H.264/WMV player Pocket Office Organizer Eco friendly materials Voice memo/dial Predictive text input
K550
MP3/AAC/MP4 player TrackID music recognition Predictive text input Adobe Photoshop Album Organizer Voice memo/dial
Messaging
Aspen
-
K550
SMS, MMS, Email, Instant Messaging
Games
Aspen
-
K550
Yes + downloadable
Java
Aspen
-
K550
Yes, MIDP 2.0
Type
Aspen
Removable Li-Po 1500 mAh battery
K550
Removable Li-Po 950 mAh battery (BST-33)
Stand-by
Aspen
Up to 560 h (2G) / Up to 500 h (3G)
K550
Up to 350 h
Talk time
Aspen
Up to 6 h 30 min (2G) / Up to 7 h 30 min (3G)
K550
Up to 7 h
Music play
Aspen
Up to 12 h
K550
-
Colors
Aspen
Iconic Black, White Silver
K550
Jet Black, Pearl White, Plum Ruby, Sophisticated Silver
SAR EU
Aspen
1.05 W/kg (head)
K550
1.25 W/kg (head)
Price
Aspen
About 70 EUR
K550
About 70 EUR
SAR
Aspen
-
K550
1.37 W/kg (head) 0.87 W/kg (body)