Screen size
S309Winner: 4.0"+40%
X6232.4"
Quick verdict
S309 leads the measured specs 10-1.
Measured wins
S309
10
spec wins
Overall winner
Ties
5
equal specs
X623
1
spec wins
Screen size
Technology
S309
GSM / HSPA
X623
GSM
2G bands
S309
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
X623
GSM 850 / 900 / 1800 / 1900 - SIM 1, GSM 850 / 900 / 1800 / 1900 - SIM 2
3G bands
S309
HSDPA 900 / 2100
X623
-
Speed
S309
HSPA 21.1/5.76 Mbps
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
X623
-
GPRS
S309
-
X623
Class 12
EDGE
S309
-
X623
Yes
Announced
S309
2015, July. Released 2015, July
X623
2011, December. Released 2011, December
Status
S309
Discontinued
X623
Discontinued
Dimensions
S309
127.6 x 64.7 x 10.8 mm (5.02 x 2.55 x 0.43 in)
X623
118.5 x 49 x 15.2 mm (4.67 x 1.93 x 0.60 in)
Weight
S309
127 g (4.48 oz)
X623
132.8 g (4.66 oz)
SIM
S309
Dual SIM (Mini-SIM, dual stand-by)
X623
Dual SIM (Mini-SIM)
Type
S309
TFT, 256K colors
X623
IPS LCD, 256K colors
Size
S309
4.0 inches, 45.5 cm2 (~55.2% screen-to-body ratio)
X623
2.4 inches, 17.8 cm2 (~30.7% screen-to-body ratio)
Resolution
S309
480 x 800 pixels, 5:3 ratio (~233 ppi density)
X623
240 x 320 pixels, 4:3 ratio (~167 ppi density)
OS
S309
Android 5.1 (Lollipop)
X623
-
CPU
S309
Dual-core 1.0 GHz
X623
-
Card slot
S309
microSDHC (dedicated slot)
X623
microSDHC (dedicated slot)
Internal
S309
8GB 1GB RAM
X623
64MB
Phonebook
S309
-
X623
Yes, Photocall
Call records
S309
-
X623
Yes
Single
S309
5 MP, AF
X623
5 MP
Features
S309
LED flash
X623
LED flash
Video
S309
Yes
X623
QCIF
Single
S309
VGA
X623
-
Video
S309
X623
-
Other
S309
-
X623
No
Loudspeaker
S309
Yes
X623
Yes
3.5mm jack
S309
Yes
X623
Yes
WLAN
S309
Wi-Fi 802.11 b/g/n, hotspot
X623
No
Bluetooth
S309
4.0, A2DP
X623
2.1, A2DP
Positioning
S309
GPS
X623
No
NFC
S309
No
X623
-
Radio
S309
FM radio
X623
FM radio, RDS
USB
S309
microUSB 2.0
X623
2.0
Sensors
S309
Accelerometer, proximity
X623
Messaging
S309
-
X623
SMS(threaded view), MMS, Email
Games
S309
-
X623
Yes
Java
S309
-
X623
Yes, MIDP 2.0
Other
S309
-
X623
MP3/AAC+/WMA/WAV player MP4/H.264 player Organizer Voice memo Predictive text input
Type
S309
Li-Ion 1600 mAh, removable
X623
Removable Li-Ion 2000 mAh battery
Stand-by
S309
Up to 500 h (3G)
X623
Up to 1200 h
Talk time
S309
Up to 9 h 30 min (3G)
X623
Up to 23 h
Colors
S309
Black, Red
X623
Black, Silver