Screen size
my521x1.9"
my855cWinner: 2.0"+5%
Quick verdict
my855c leads the measured specs 4-3.
Measured wins
my521x
3
spec wins
Ties
3
equal specs
my855c
4
spec wins
Overall winner
Screen size
Technology
my521x
GSM
my855c
GSM / HSPA
2G bands
my521x
GSM 900 / 1800 / 1900
my855c
GSM 900 / 1800 / 1900
GPRS
my521x
Yes
my855c
-
EDGE
my521x
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
my521x
-
my855c
HSDPA 2100
Speed
my521x
-
my855c
HSPA 3.6/0.384 Mbps
Announced
my521x
2008, July
my855c
2008, February. Released 2008
Status
my521x
Discontinued
my855c
Discontinued
Dimensions
my521x
107 x 46 x 10 mm (4.21 x 1.81 x 0.39 in)
my855c
96 x 49 x 16 mm (3.78 x 1.93 x 0.63 in)
Weight
my521x
90 g (3.17 oz)
my855c
95 g (3.35 oz)
SIM
my521x
Mini-SIM
my855c
Mini-SIM
Type
my521x
TFT, 65K colors
my855c
TFT, 256K colors
Size
my521x
1.9 inches, 11.4 cm2 (~23.1% screen-to-body ratio)
my855c
2.0 inches, 12.4 cm2 (~26.3% screen-to-body ratio)
Resolution
my521x
128 x 160 pixels (~108 ppi density)
my855c
320 x 240 pixels, 4:3 ratio (~200 ppi density)
Card slot
my521x
microSD (dedicated slot)
my855c
microSD (dedicated slot)
Phonebook
my521x
Yes
my855c
Yes
Call records
my521x
20 dialed, 20 received, 20 missed calls
my855c
20 dialed, 20 received, 20 missed calls
Internal
my521x
10MB
my855c
-
Single
my521x
1.3 MP
my855c
2 MP
Video
my521x
Yes
my855c
Yes
Other
my521x
No
my855c
-
Single
my521x
-
my855c
VGA videocall camera
Video
my521x
-
my855c
Loudspeaker
my521x
No
my855c
Yes
Alert types
my521x
Vibration; Polyphonic(32) ringtones
my855c
Vibration; Polyphonic ringtones
3.5mm jack
my521x
No
my855c
No
WLAN
my521x
No
my855c
No
Bluetooth
my521x
Yes
my855c
2.0, A2DP
Positioning
my521x
No
my855c
No
Radio
my521x
No
my855c
No
USB
my521x
Proprietary
my855c
Proprietary
Sensors
my521x
my855c
Messaging
my521x
SMS, EMS, MMS
my855c
SMS, MMS, Instant Messaging
Browser
my521x
WAP 2.0/xHTML
my855c
WAP 2.0/xHTML
Games
my521x
Yes
my855c
Yes
Java
my521x
Yes, MIDP 2.0
my855c
Yes, MIDP 2.0
Other
my521x
MP3/AAC player Predictive text input Organizer
my855c
Music player Predictive text input Organizer
Type
my521x
Removable Li-Ion battery
my855c
Removable Li-Ion battery
Stand-by
my521x
Up to 200 h
my855c
Up to 300 h
Talk time
my521x
Up to 3 h
my855c
Up to 4 h 30 min
Colors
my521x
Black,Silver
my855c