Screen size
A51—
A75—
Quick verdict
A75 leads the measured specs 2-1.
Measured wins
A51
1
spec wins
Ties
3
equal specs
A75
2
spec wins
Overall winner
Screen size
Technology
A51
GSM
A75
GSM
2G bands
A51
GSM 900 / 1800
A75
GSM 900 / 1800 / 1900 , GSM 850 / 1800 / 1900 - US version
GPRS
A51
A75
Class 8
EDGE
A51
No
A75
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
5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
No
Announced
A51
2004, Q4
A75
2005, Q1
Status
A51
Discontinued
A75
Discontinued
Dimensions
A51
103 x 46 x 21 mm, 75 cc (4.06 x 1.81 x 0.83 in)
A75
101 x 44 x 20 mm (3.98 x 1.73 x 0.79 in)
Weight
A51
84 g (2.96 oz)
A75
78 g (2.75 oz)
SIM
A51
Mini-SIM
A75
Mini-SIM
Type
A51
Monochrome graphic
A75
CSTN, 4096 colors
Size
A51
A75
Resolution
A51
101 x 64 pixels, 5 lines
A75
101 x 80 pixels
Other
A51
Screensavers
A75
4-way navigation key Screensaver
Card slot
A51
No
A75
No
Phonebook
A51
50 entries
A75
100 numbers, 4 groups
Call records
A51
10 dialed, 10 received, 10 missed calls
A75
10 dialed, 10 received, 10 missed calls
Other
A51
-
A75
100 short messages
Other
A51
No
A75
No
Loudspeaker
A51
No
A75
Yes
Alert types
A51
Downloadable polyphonic ringtones
A75
Polyphonic(32) ringtones
3.5mm jack
A51
No
A75
No
WLAN
A51
No
A75
No
Bluetooth
A51
No
A75
No
Positioning
A51
No
A75
No
Radio
A51
No
A75
No
USB
A51
A75
Sensors
A51
A75
Messaging
A51
SMS, EMS
A75
SMS, EMS
Browser
A51
WAP 1.2.1
A75
WAP 1.2.1
Games
A51
Stack Attack and Wacko
A75
2 - Stack Attack Junior and Magic Picture
Java
A51
No
A75
No
Other
A51
Predictive text input Currency converter Calculator Exchangable covers
A75
Predictive text input Calculator Stopwatch
Type
A51
Removable Li-Ion 700 mAh battery
A75
Removable Li-Ion 650 mAh battery
Stand-by
A51
Up to 250 h
A75
Up to 250 h
Talk time
A51
Up to 5 h
A75
Up to 5 h
Colors
A51
Urban Grey
A75
2 - Atlantic Blue, Polar Silver