Screen size
my421x1.8"
my901CWinner: 1.9"+5.3%
Quick verdict
my901C leads the measured specs 4-3.
Measured wins
my421x
3
spec wins
Ties
3
equal specs
my901C
4
spec wins
Overall winner
Screen size
Technology
my421x
GSM
my901C
GSM / UMTS
2G bands
my421x
GSM 900 / 1800
my901C
GSM 900 / 1800 / 1900
GPRS
my421x
Yes
my901C
-
EDGE
my421x
No
my901C
-
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
-
my901C
UMTS 2100
Speed
my421x
-
my901C
Yes, 384 kbps
Announced
my421x
2008, February. Released 2008
my901C
2007, March. Released 2008, February
Status
my421x
Discontinued
my901C
Discontinued
Dimensions
my421x
107 x 47 x 10 mm (4.21 x 1.85 x 0.39 in)
my901C
90 x 45 x 23.5 mm (3.54 x 1.77 x 0.93 in)
Weight
my421x
81 g (2.86 oz)
my901C
115 g (4.06 oz)
SIM
my421x
Mini-SIM
my901C
Mini-SIM
Type
my421x
CSTN, 65K colors
my901C
TFT, 256K colors
Size
my421x
1.8 inches, 10.2 cm2 (~20.3% screen-to-body ratio)
my901C
1.9 inches, 11.2 cm2 (~27.6% screen-to-body ratio)
Resolution
my421x
128 x 160 pixels (~114 ppi density)
my901C
240 x 320 pixels, 4:3 ratio (~211 ppi density)
Other
my421x
Glossy effect
my901C
Second external TFT, 256K colors display (96 x 64 pixels)
Card slot
my421x
microSD (dedicated slot)
my901C
miniSD
Phonebook
my421x
Yes
my901C
Yes
Call records
my421x
20 dialed, 20 received, 20 missed calls
my901C
20 dialed, 20 received, 20 missed calls
Single
my421x
1.3 MP
my901C
2 MP
Video
my421x
Yes
my901C
Yes
Other
my421x
No
my901C
-
Single
my421x
-
my901C
VGA videocall camera
Video
my421x
-
my901C
Loudspeaker
my421x
Yes
my901C
No
Alert types
my421x
Vibration; Polyphonic ringtones
my901C
Vibration; Downloadable polyphonic ringtones
3.5mm jack
my421x
No
my901C
No
WLAN
my421x
No
my901C
No
Bluetooth
my421x
Yes
my901C
2.0, A2DP
Positioning
my421x
No
my901C
No
Radio
my421x
Stereo FM radio, RDS
my901C
No
USB
my421x
Proprietary
my901C
Proprietary
Sensors
my421x
my901C
Messaging
my421x
SMS, MMS
my901C
SMS, EMS, MMS, Email
Browser
my421x
WAP 2.0/xHTML
my901C
WAP 2.0/xHTML
Games
my421x
Yes
my901C
Yes
Java
my421x
Yes, MIDP 2.0
my901C
Yes, MIDP 2.0
Other
my421x
Music player Predictive text input Organizer
my901C
Video telephony & streaming MP3/AAC player Predictive text input Organizer Voice memo
Type
my421x
Removable Li-Ion battery
my901C
Removable Li-Ion battery
Stand-by
my421x
Up to 220 h
my901C
Up to 300 h
Talk time
my421x
Up to 3 h 40 min
my901C
Up to 5 h
Colors
my421x
Black
my901C
Black, Dark Blue, Dark Red