Screen size
CF75—
SL55—
Quick verdict
CF75 leads the measured specs 2-1.
Measured wins
CF75
2
spec wins
Overall winner
Ties
4
equal specs
SL55
1
spec wins
Screen size
Technology
CF75
GSM
SL55
GSM
2G bands
CF75
GSM 900 / 1800 / 1900
SL55
GSM 900 / 1800 / 1900 , GSM 850 / 1900 - Siemens SL56
GPRS
CF75
Class 10
SL55
Class 8
EDGE
CF75
Yes
SL55
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
equal specsIP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
No
Announced
CF75
2005, Q1
SL55
2003, Q2
Status
CF75
Discontinued
SL55
Discontinued
Dimensions
CF75
94 x 47 x 22 mm, 80 cc (3.70 x 1.85 x 0.87 in)
SL55
82 x 45 x 22 mm, 63 cc (3.23 x 1.77 x 0.87 in)
Weight
CF75
91 g (3.21 oz)
SL55
79 g (2.79 oz)
SIM
CF75
Mini-SIM
SL55
Mini-SIM
Type
CF75
CSTN, 65K colors
SL55
CSTN, 4096 colors
Size
CF75
SL55
Resolution
CF75
128 x 160 pixels
SL55
101 x 80 pixels
Other
CF75
Second external 4K colors display, CSTN (96 x 64 pixels) 5-way navigation key
SL55
Navi key Retractable keyboard, like in Siemens SL10
Card slot
CF75
No
SL55
No
Phonebook
CF75
1000 x 20 fields, Photo call
SL55
500 x 14 fields
Call records
CF75
10 dialed, 10 received, 10 missed calls
SL55
10 dialed, 10 received, 10 missed calls
Internal
CF75
10MB
SL55
1.6MB
Other
CF75
-
SL55
20 voice dial numbers 20 voice commands 100 short messages SMS templates
Single
CF75
VGA
SL55
-
Video
CF75
Yes
SL55
-
Other
CF75
No
SL55
-
Loudspeaker
CF75
Yes
SL55
No
Alert types
CF75
Vibration; Downloadable polyphonic ringtones
SL55
Vibration; Downloadable polyphonic ringtones, composer
3.5mm jack
CF75
No
SL55
No
WLAN
CF75
No
SL55
No
Bluetooth
CF75
No
SL55
No
Positioning
CF75
No
SL55
No
Infrared port
CF75
Yes
SL55
Yes
Radio
CF75
No
SL55
No
USB
CF75
Proprietary
SL55
Sensors
CF75
SL55
Messaging
CF75
SMS, EMS, MMS, EMail
SL55
SMS, EMS, MMS, Email
Browser
CF75
WAP 2.0/xHTML
SL55
WAP 1.2.1
Games
CF75
Yes + downloadable
SL55
Yes
Java
CF75
Yes, MIDP 2.0
SL55
Yes
Other
CF75
Push to talk Media player Predictive text input Organizer SyncML Voice memo
SL55
Predictive text input Stopwatch Organizer Voice dial Voice command Voice memo User profiles SyncML Optional digital camera
Clock
CF75
-
SL55
Yes
Alarm
CF75
-
SL55
Yes
Type
CF75
Removable Li-Ion 600 mAh battery
SL55
Removable Li-Po 500 mAh battery (EBA-520)
Stand-by
CF75
Up to 250 h
SL55
Up to 210 h
Talk time
CF75
Up to 2 h 30 min
SL55
Up to 5 h
Colors
CF75
Ocean blue, Pearl black
SL55
Other
CF75
-
SL55
No