Screen size
S309Winner: 4.0"+30%
X3312.8"
Quick verdict
S309 leads the measured specs 11-1.
Measured wins
S309
11
spec wins
Overall winner
Ties
4
equal specs
X331
1
spec wins
Screen size
Technology
S309
GSM / HSPA
X331
GSM
2G bands
S309
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
X331
GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
S309
HSDPA 900 / 2100
X331
-
Speed
S309
HSPA 21.1/5.76 Mbps
X331
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
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
-
GPRS
S309
-
X331
Class 12
EDGE
S309
-
X331
Yes
Announced
S309
2015, July. Released 2015, July
X331
2012, June. Released 2012, June
Status
S309
Discontinued
X331
Discontinued
Dimensions
S309
127.6 x 64.7 x 10.8 mm (5.02 x 2.55 x 0.43 in)
X331
108 x 57.5 x 14.4 mm (4.25 x 2.26 x 0.57 in)
Weight
S309
127 g (4.48 oz)
X331
107.7 g (3.77 oz)
SIM
S309
Dual SIM (Mini-SIM, dual stand-by)
X331
Dual SIM (Mini-SIM)
Type
S309
TFT, 256K colors
X331
TFT resistive touchscreen, 256K colors
Size
S309
4.0 inches, 45.5 cm2 (~55.2% screen-to-body ratio)
X331
2.8 inches, 24.3 cm2 (~39.1% screen-to-body ratio)
Resolution
S309
480 x 800 pixels, 5:3 ratio (~233 ppi density)
X331
240 x 320 pixels, 4:3 ratio (~143 ppi density)
OS
S309
Android 5.1 (Lollipop)
X331
-
CPU
S309
Dual-core 1.0 GHz
X331
-
Card slot
S309
microSDHC (dedicated slot)
X331
microSDHC (dedicated slot)
Internal
S309
8GB 1GB RAM
X331
44MB
Phonebook
S309
-
X331
Yes, Photocall
Call records
S309
-
X331
Yes
Single
S309
5 MP, AF
X331
2 MP
Features
S309
LED flash
X331
-
Video
S309
Yes
X331
QCIF
Single
S309
VGA
X331
-
Video
S309
X331
-
Other
S309
-
X331
No
Loudspeaker
S309
Yes
X331
Yes
3.5mm jack
S309
Yes
X331
Yes
WLAN
S309
Wi-Fi 802.11 b/g/n, hotspot
X331
Wi-Fi 802.11 b/g
Bluetooth
S309
4.0, A2DP
X331
2.1, A2DP
Positioning
S309
GPS
X331
No
NFC
S309
No
X331
-
Radio
S309
FM radio
X331
Stereo FM radio, RDS
USB
S309
microUSB 2.0
X331
2.0
Sensors
S309
Accelerometer, proximity
X331
Messaging
S309
-
X331
SMS(threaded view), MMS, Email
Games
S309
-
X331
Yes
Java
S309
-
X331
Yes
Other
S309
-
X331
MP3/WAV/WMA/AAC+ player MP4/H.263 player Organizer Voice memo Predictive text input
Type
S309
Li-Ion 1600 mAh, removable
X331
Removable Li-Ion 1530 mAh battery
Stand-by
S309
Up to 500 h (3G)
X331
Up to 1200 h
Talk time
S309
Up to 9 h 30 min (3G)
X331
Up to 14 h
Colors
S309
Black, Red
X331
Black