Screen size
my421x1.8"
my855cWinner: 2.0"+10%
Quick verdict
my855c leads the measured specs 4-3.
Measured wins
my421x
3
spec wins
Ties
3
equal specs
my855c
4
spec wins
Overall winner
Screen size
Technology
my421x
GSM
my855c
GSM / HSPA
2G bands
my421x
GSM 900 / 1800
my855c
GSM 900 / 1800 / 1900
GPRS
my421x
Yes
my855c
-
EDGE
my421x
No
my855c
-
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
3G bands
my421x
-
my855c
HSDPA 2100
Speed
my421x
-
my855c
HSPA 3.6/0.384 Mbps
Announced
my421x
2008, February. Released 2008
my855c
2008, February. Released 2008
Status
my421x
Discontinued
my855c
Discontinued
Dimensions
my421x
107 x 47 x 10 mm (4.21 x 1.85 x 0.39 in)
my855c
96 x 49 x 16 mm (3.78 x 1.93 x 0.63 in)
Weight
my421x
81 g (2.86 oz)
my855c
95 g (3.35 oz)
SIM
my421x
Mini-SIM
my855c
Mini-SIM
Type
my421x
CSTN, 65K colors
my855c
TFT, 256K colors
Size
my421x
1.8 inches, 10.2 cm2 (~20.3% screen-to-body ratio)
my855c
2.0 inches, 12.4 cm2 (~26.3% screen-to-body ratio)
Resolution
my421x
128 x 160 pixels (~114 ppi density)
my855c
320 x 240 pixels, 4:3 ratio (~200 ppi density)
Other
my421x
Glossy effect
my855c
-
Card slot
my421x
microSD (dedicated slot)
my855c
microSD (dedicated slot)
Phonebook
my421x
Yes
my855c
Yes
Call records
my421x
20 dialed, 20 received, 20 missed calls
my855c
20 dialed, 20 received, 20 missed calls
Single
my421x
1.3 MP
my855c
2 MP
Video
my421x
Yes
my855c
Yes
Other
my421x
No
my855c
-
Single
my421x
-
my855c
VGA videocall camera
Video
my421x
-
my855c
Loudspeaker
my421x
Yes
my855c
Yes
Alert types
my421x
Vibration; Polyphonic ringtones
my855c
Vibration; Polyphonic ringtones
3.5mm jack
my421x
No
my855c
No
WLAN
my421x
No
my855c
No
Bluetooth
my421x
Yes
my855c
2.0, A2DP
Positioning
my421x
No
my855c
No
Radio
my421x
Stereo FM radio, RDS
my855c
No
USB
my421x
Proprietary
my855c
Proprietary
Sensors
my421x
my855c
Messaging
my421x
SMS, MMS
my855c
SMS, MMS, Instant Messaging
Browser
my421x
WAP 2.0/xHTML
my855c
WAP 2.0/xHTML
Games
my421x
Yes
my855c
Yes
Java
my421x
Yes, MIDP 2.0
my855c
Yes, MIDP 2.0
Other
my421x
Music player Predictive text input Organizer
my855c
Music player Predictive text input Organizer
Type
my421x
Removable Li-Ion battery
my855c
Removable Li-Ion battery
Stand-by
my421x
Up to 220 h
my855c
Up to 300 h
Talk time
my421x
Up to 3 h 40 min
my855c
Up to 4 h 30 min
Colors
my421x
Black
my855c