Screen size
C820Winner: 8.0"+38%
S15.0"
Quick verdict
S1 leads the measured specs 9-3.
Measured wins
C820
3
spec wins
Ties
5
equal specs
S1
9
spec wins
Overall winner
Screen size
Technology
C820
GSM / HSPA
S1
GSM / HSPA
2G bands
C820
GSM 900 / 1800 - SIM 1 & SIM 2
S1
GSM 900 / 1800 - SIM 1 & SIM 2
3G bands
C820
HSDPA 2100
S1
HSDPA 2100
Speed
C820
HSPA
S1
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
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
HSPA
Announced
C820
2014
S1
2014, February. Released 2014, February
Status
C820
Discontinued
S1
Discontinued
Dimensions
C820
210 x 131 x 10.5 mm (8.27 x 5.16 x 0.41 in)
S1
144 x 71 x 8.9 mm (5.67 x 2.80 x 0.35 in)
Weight
C820
-
S1
137 g (4.83 oz)
SIM
C820
Dual SIM
S1
Dual SIM
Type
C820
TFT
S1
IPS LCD
Size
C820
8.0 inches, 185.6 cm2 (~67.5% screen-to-body ratio)
S1
5.0 inches, 68.9 cm2 (~67.4% screen-to-body ratio)
Resolution
C820
800 x 1280 pixels, 16:10 ratio (~189 ppi density)
S1
1080 x 1920 pixels, 16:9 ratio (~441 ppi density)
OS
C820
Android 4.2.2 (Jelly Bean)
S1
Android 4.2.1 (Jelly Bean)
CPU
C820
Dual-core 1.0 GHz
S1
Quad-core 1.5 GHz
Card slot
C820
microSDHC
S1
microSDHC (dedicated slot)
Internal
C820
4GB 512MB RAM
S1
16GB 1GB RAM
Single
C820
3.15 MP
S1
13 MP, AF
Video
C820
Yes
S1
Yes
Features
C820
-
S1
LED flash
Single
C820
1.3 MP
S1
8 MP
Video
C820
S1
Loudspeaker
C820
Yes
S1
Yes
3.5mm jack
C820
Yes
S1
Yes
WLAN
C820
Wi-Fi 802.11 b/g/n, hotspot
S1
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
C820
2.1
S1
4.0, A2DP
Positioning
C820
GPS
S1
GPS
NFC
C820
No
S1
No
Radio
C820
FM radio
S1
FM radio
USB
C820
microUSB 2.0
S1
microUSB 2.0
Sensors
C820
Accelerometer
S1
Accelerometer, proximity
Type
C820
Li-Ion 4000 mAh, non-removable
S1
Li-Ion 2300 mAh battery
Stand-by
C820
Up to 500 h
S1
-
Talk time
C820
Up to 14 h
S1
-
Colors
C820
Black, Silver
S1
Black
SAR EU
C820
0.41 W/kg (head) 0.53 W/kg (body)
S1
-