Screen size
S309Winner: 4.0"+13%
W85783.5"
Quick verdict
S309 leads the measured specs 7-2.
Measured wins
S309
7
spec wins
Overall winner
Ties
7
equal specs
W8578
2
spec wins
Screen size
Technology
S309
GSM / HSPA
W8578
GSM / HSPA
2G bands
S309
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
W8578
GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
S309
HSDPA 900 / 2100
W8578
HSDPA 900 / 2100
Speed
S309
HSPA 21.1/5.76 Mbps
Resolution
equal specsRefresh 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
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
W8578
HSPA 3.6/0.384 Mbps
Announced
S309
2015, July. Released 2015, July
W8578
2014, April. Released 2014, April
Status
S309
Discontinued
W8578
Discontinued
Dimensions
S309
127.6 x 64.7 x 10.8 mm (5.02 x 2.55 x 0.43 in)
W8578
116 x 60 x 21 mm (4.57 x 2.36 x 0.83 in)
Weight
S309
127 g (4.48 oz)
W8578
217 g (7.65 oz)
SIM
S309
Dual SIM (Mini-SIM, dual stand-by)
W8578
Dual SIM
Type
S309
TFT, 256K colors
W8578
TFT, 256K colors
Size
S309
4.0 inches, 45.5 cm2 (~55.2% screen-to-body ratio)
W8578
3.5 inches, 34.9 cm2 (~50.1% screen-to-body ratio)
Resolution
S309
480 x 800 pixels, 5:3 ratio (~233 ppi density)
W8578
480 x 800 pixels, 5:3 ratio (~267 ppi density)
Other
S309
-
W8578
Secondary TFT, 256K colors 240 x 320 pixels, 2.6 inches
OS
S309
Android 5.1 (Lollipop)
W8578
Android 4.2 (Jelly Bean)
CPU
S309
Dual-core 1.0 GHz
W8578
-
Card slot
S309
microSDHC (dedicated slot)
W8578
microSDHC (dedicated slot)
Internal
S309
8GB 1GB RAM
W8578
512MB 256MB RAM
Single
S309
5 MP, AF
W8578
5 MP
Features
S309
LED flash
W8578
LED flash
Video
S309
Yes
W8578
Yes
Single
S309
VGA
W8578
-
Video
S309
W8578
-
Other
S309
-
W8578
No
Loudspeaker
S309
Yes
W8578
Yes
3.5mm jack
S309
Yes
W8578
Yes
WLAN
S309
Wi-Fi 802.11 b/g/n, hotspot
W8578
Wi-Fi 802.11 b/g
Bluetooth
S309
4.0, A2DP
W8578
2.1, EDR
Positioning
S309
GPS
W8578
No
NFC
S309
No
W8578
No
Radio
S309
FM radio
W8578
FM radio
USB
S309
microUSB 2.0
W8578
microUSB 2.0
Sensors
S309
Accelerometer, proximity
W8578
Accelerometer
Other
S309
-
W8578
SNS integration MP3/WAV/WMA/eAAC+ player MP4/H.263 player Document viewer Photo viewer Organizer Voice memo Predictive text input
Type
S309
Li-Ion 1600 mAh, removable
W8578
Li-Ion 2000 mAh, removable
Stand-by
S309
Up to 500 h (3G)
W8578
Up to 850 h
Talk time
S309
Up to 9 h 30 min (3G)
W8578
Up to 9 h
Colors
S309
Black, Red
W8578
Black