Screen size
S309Winner: 4.0"+20%
W8203.2"
Quick verdict
S309 leads the measured specs 10-1.
Measured wins
S309
10
spec wins
Overall winner
Ties
5
equal specs
W820
1
spec wins
Screen size
Technology
S309
GSM / HSPA
W820
GSM / HSPA
2G bands
S309
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
W820
GSM 900 / 1800 / 1900
3G bands
S309
HSDPA 900 / 2100
W820
HSDPA 2100
Speed
S309
HSPA 21.1/5.76 Mbps
W820
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
HSPA 7.2/0.384 Mbps
Announced
S309
2015, July. Released 2015, July
W820
2012, March
Status
S309
Discontinued
W820
Discontinued
Dimensions
S309
127.6 x 64.7 x 10.8 mm (5.02 x 2.55 x 0.43 in)
W820
114.6 x 57.7 x 14.8 mm (4.51 x 2.27 x 0.58 in)
Weight
S309
127 g (4.48 oz)
W820
143 g (5.04 oz)
SIM
S309
Dual SIM (Mini-SIM, dual stand-by)
W820
Mini-SIM
Type
S309
TFT, 256K colors
W820
TFT
Size
S309
4.0 inches, 45.5 cm2 (~55.2% screen-to-body ratio)
W820
3.2 inches, 30.5 cm2 (~46.1% screen-to-body ratio)
Resolution
S309
480 x 800 pixels, 5:3 ratio (~233 ppi density)
W820
320 x 480 pixels, 3:2 ratio (~180 ppi density)
OS
S309
Android 5.1 (Lollipop)
W820
Android 2.3 (Gingerbread)
CPU
S309
Dual-core 1.0 GHz
W820
-
Card slot
S309
microSDHC (dedicated slot)
W820
microSDHC (dedicated slot)
Internal
S309
8GB 1GB RAM
W820
512MB
Single
S309
5 MP, AF
W820
5 MP, AF
Features
S309
LED flash
W820
LED flash
Video
S309
Yes
W820
176x144@15fps
Single
S309
VGA
W820
Yes
Video
S309
W820
Loudspeaker
S309
Yes
W820
Yes
3.5mm jack
S309
Yes
W820
Yes
WLAN
S309
Wi-Fi 802.11 b/g/n, hotspot
W820
Wi-Fi 802.11 b/g, hotspot
Bluetooth
S309
4.0, A2DP
W820
2.0
Positioning
S309
GPS
W820
GPS, A-GPS
NFC
S309
No
W820
-
Radio
S309
FM radio
W820
FM radio
USB
S309
microUSB 2.0
W820
2.0
Sensors
S309
Accelerometer, proximity
W820
Accelerometer, proximity, compass
Other
S309
-
W820
MP3/WAV/WMA/AAC+ player MP4/H.263 player Document viewer Photo viewer/editor Organizer Voice memo/dial Predictive text input
Type
S309
Li-Ion 1600 mAh, removable
W820
Removable Li-Ion 2100 mAh battery
Stand-by
S309
Up to 500 h (3G)
W820
Up to 600 h
Talk time
S309
Up to 9 h 30 min (3G)
W820
Up to 8 h
Colors
S309
Black, Red
W820
Black