Screen size
S309Winner: 4.0"+40%
X6032.4"
Quick verdict
S309 leads the measured specs 12-0.
Measured wins
S309
12
spec wins
Overall winner
Ties
4
equal specs
X603
0
spec wins
Screen size
Technology
S309
GSM / HSPA
X603
GSM
2G bands
S309
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
X603
GSM 900 / 1800 / 1900
3G bands
S309
HSDPA 900 / 2100
X603
-
Speed
S309
HSPA 21.1/5.76 Mbps
X603
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
SD card
equal specsStereo speakers
-
GPRS
S309
-
X603
Class 10
EDGE
S309
-
X603
Class 10
Announced
S309
2015, July. Released 2015, July
X603
2010, January. Released 2010, March
Status
S309
Discontinued
X603
Discontinued
Dimensions
S309
127.6 x 64.7 x 10.8 mm (5.02 x 2.55 x 0.43 in)
X603
112 x 50.5 x 15.5 mm (4.41 x 1.99 x 0.61 in)
Weight
S309
127 g (4.48 oz)
X603
140 g (4.94 oz)
SIM
S309
Dual SIM (Mini-SIM, dual stand-by)
X603
Mini-SIM
Type
S309
TFT, 256K colors
X603
TFT resistive touchscreen, 256K colors
Size
S309
4.0 inches, 45.5 cm2 (~55.2% screen-to-body ratio)
X603
2.4 inches, 17.8 cm2 (~31.5% screen-to-body ratio)
Resolution
S309
480 x 800 pixels, 5:3 ratio (~233 ppi density)
X603
240 x 320 pixels, 4:3 ratio (~167 ppi density)
OS
S309
Android 5.1 (Lollipop)
X603
-
CPU
S309
Dual-core 1.0 GHz
X603
-
Card slot
S309
microSDHC (dedicated slot)
X603
microSDHC (dedicated slot)
Internal
S309
8GB 1GB RAM
X603
50MB
Phonebook
S309
-
X603
1000 entries, Photocall
Call records
S309
-
X603
30 received, dialed and missed calls
Single
S309
5 MP, AF
X603
5 MP, AF
Features
S309
LED flash
X603
LED flash
Video
S309
Yes
X603
480p@15fps
Single
S309
VGA
X603
-
Video
S309
X603
-
Other
S309
-
X603
No
Loudspeaker
S309
Yes
X603
Yes
3.5mm jack
S309
Yes
X603
No
WLAN
S309
Wi-Fi 802.11 b/g/n, hotspot
X603
No
Bluetooth
S309
4.0, A2DP
X603
2.0, A2DP
Positioning
S309
GPS
X603
No
NFC
S309
No
X603
-
Radio
S309
FM radio
X603
Stereo FM radio, RDS
USB
S309
microUSB 2.0
X603
miniUSB 2.0
Sensors
S309
Accelerometer, proximity
X603
Messaging
S309
-
X603
SMS(threaded view), MMS, Email
Browser
S309
-
X603
WAP 2.0/xHTML
Games
S309
-
X603
Yes + downloadable
Java
S309
-
X603
Yes, MIDP 2.0
Other
S309
-
X603
MP3/WAV/AAC+/WMA player MP4/H.264 player Voice memo Organizer Predictive text input
Type
S309
Li-Ion 1600 mAh, removable
X603
Removable Li-Po 1530 mAh battery
Stand-by
S309
Up to 500 h (3G)
X603
Up to 1200 h
Talk time
S309
Up to 9 h 30 min (3G)
X603
Up to 12 h
Colors
S309
Black, Red
X603
Black