Screen size
A31—
S75Winner: 1.9"
Quick verdict
S75 leads the measured specs 6-2.
Measured wins
A31
2
spec wins
Ties
3
equal specs
S75
6
spec wins
Overall winner
Screen size
Technology
A31
GSM
S75
GSM
2G bands
A31
GSM 900 / 1800 , GSM 850 / 1900 - US version
S75
GSM 900 / 1800 / 1900
GPRS
A31
Class 8
S75
Class 10
EDGE
A31
No
S75
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
3.5mm jack
equal specsSD card
Stereo speakers
Yes
Announced
A31
2005, November
S75
2005, Q2
Status
A31
Discontinued
S75
Discontinued
Dimensions
A31
102 x 46 x 17.6 mm, 75 cc (4.02 x 1.81 x 0.69 in)
S75
103 x 47 x 18.5 mm, 84 cc (4.06 x 1.85 x 0.73 in)
Weight
A31
85 g (3.00 oz)
S75
99 g (3.49 oz)
SIM
A31
Mini-SIM
S75
Mini-SIM
Type
A31
CSTN, 65K colors
S75
TFT, 256K colors
Size
A31
S75
1.9 inches, 28 x 38 mm, 11.2 cm2 (~23.1% screen-to-body ratio)
Resolution
A31
128 x 128 pixels, 1:1 ratio
S75
132 x 176 pixels, 4:3 ratio (~116 ppi density)
Card slot
A31
No
S75
RS-MMC, up to 1 GB, 128 MB included
Phonebook
A31
Yes
S75
1000 x 43 fields, Photo call
Call records
A31
10 dialed, 10 received, 10 missed calls
S75
100 dialed, 100 received, 100 missed calls
Internal
A31
1.5MB
S75
20MB
Other
A31
-
S75
100 short messages
Other
A31
No
S75
-
Loudspeaker
A31
Yes
S75
No
Alert types
A31
Vibration; Polyphonic(32) ringtones
S75
Vibration; Downloadable polyphonic, MP3, AAC ringtones
3.5mm jack
A31
No
S75
No
WLAN
A31
No
S75
No
Bluetooth
A31
No
S75
1.2
Positioning
A31
No
S75
No
Radio
A31
No
S75
No
USB
A31
No
S75
Proprietary
Infrared port
A31
-
S75
Yes
Sensors
A31
S75
Messaging
A31
SMS, EMS, MMS
S75
SMS, MMS, EMail, Instant Messaging
Browser
A31
WAP 1.2.1
S75
WAP 2.0/xHTML
Games
A31
Yes + downloadable
S75
Yes + downloadable
Java
A31
Yes, MIDP 1.0
S75
Yes, MIDP 2.0
Other
A31
Predictive text input Organizer
S75
Push to Talk MP3/AAC/MP4 player Predictive text input Organizer SyncML Voice memo
Type
A31
Removable Li-Ion 820 mAh battery
S75
Removable Li-Ion 820 mAh battery
Stand-by
A31
Up to 270 h
S75
Up to 300 h
Talk time
A31
Up to 5 h
S75
Up to 5 h
Colors
A31
Anthracite, Ruby Red
S75
Piano Black, Zirconia
Single
A31
-
S75
1.3 MP
Features
A31
-
S75
LED flash
Video
A31
-
S75
Yes
Other
A31
-
S75
No