Screen size
A355Winner: 3.5"+31%
C512.4"
Quick verdict
A355 leads the measured specs 6-2.
Measured wins
A355
6
spec wins
Overall winner
Ties
5
equal specs
C51
2
spec wins
Screen size
Technology
A355
GSM / HSPA
C51
GSM
2G bands
A355
GSM 900 / 1800 - SIM 1 & SIM 2
C51
GSM 900 / 1800 - SIM 1 & SIM 2
3G bands
A355
HSDPA
C51
-
Speed
A355
HSPA
C51
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
equal specsUSB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
-
GPRS
A355
Yes
C51
No
EDGE
A355
Yes
C51
No
Announced
A355
2015, May. Released 2015, May
C51
2014
Status
A355
Discontinued
C51
Discontinued
Dimensions
A355
115.3 x 63.3 x 10.2 mm (4.54 x 2.49 x 0.40 in)
C51
-
Weight
A355
97.5 g (3.46 oz)
C51
-
SIM
A355
Dual SIM
C51
Dual SIM
Type
A355
TFT, 256K colors
C51
TFT
Size
A355
3.5 inches, 36.5 cm2 (~50.0% screen-to-body ratio)
C51
2.4 inches, 17.8 cm2
Resolution
A355
320 x 480 pixels, 3:2 ratio (~165 ppi density)
C51
240 x 320 pixels, 4:3 ratio (~167 ppi density)
OS
A355
Android 4.4.2 (KitKat)
C51
-
Chipset
A355
Spreadtrum 7715
C51
-
CPU
A355
1.0 GHz
C51
-
GPU
A355
Mali-400
C51
-
Card slot
A355
microSDHC
C51
microSDHC
Internal
A355
512MB 256MB RAM
C51
-
Phonebook
A355
-
C51
Yes
Call records
A355
-
C51
Yes
Single
A355
2 MP
C51
1.3 MP
Features
A355
Dual-LED flash
C51
-
Video
A355
Yes
C51
Yes
Single
A355
VGA
C51
-
Video
A355
C51
-
Other
A355
-
C51
No
Loudspeaker
A355
Yes
C51
Yes
3.5mm jack
A355
Yes
C51
Yes
WLAN
A355
Wi-Fi 802.11 b/g/n
C51
No
Bluetooth
A355
2.0
C51
2.0
Positioning
A355
GPS
C51
No
NFC
A355
No
C51
No
Radio
A355
FM radio
C51
FM radio
USB
A355
microUSB
C51
microUSB
Sensors
A355
Accelerometer
C51
Messaging
A355
-
C51
SMS
Games
A355
-
C51
Yes
Java
A355
-
C51
No
Other
A355
-
C51
Audio/video player
Type
A355
Li-Ion 1200 mAh battery
C51
Li-Ion 1000 mAh, removable
Colors
A355
Light Blue, Dart Blue, Red, Yellow, White
C51
Brown, Champagne, Black
SAR EU
A355
0.49 W/kg (head) 0.84 W/kg (body)
C51
-