Screen size
s4009 CrystalWinner: 4.0"+40%
S8152.4"
Quick verdict
s4009 Crystal leads the measured specs 12-1.
Measured wins
s4009 Crystal
12
spec wins
Overall winner
Ties
3
equal specs
S815
1
spec wins
Screen size
Technology
s4009 Crystal
GSM / HSPA
S815
GSM / HSPA
2G bands
s4009 Crystal
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
S815
GSM 850 / 900 / 1800 / 1900
3G bands
s4009 Crystal
HSDPA 850 / 1900 / 2100
S815
HSDPA 850 / 1900
Speed
s4009 Crystal
HSPA 21.1/5.76 Mbps
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
5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
S815
HSPA 3.6/0.384 Mbps
Announced
s4009 Crystal
2017, June. Released 2017, June
S815
2011, Q4. Released 2011, December
Status
s4009 Crystal
Discontinued
S815
Discontinued
Dimensions
s4009 Crystal
127 x 66 x 10.7 mm (5.0 x 2.60 x 0.42 in)
S815
105.5 x 58 x 11.7 mm (4.15 x 2.28 x 0.46 in)
Weight
s4009 Crystal
-
S815
90 g (3.17 oz)
SIM
s4009 Crystal
Dual SIM (Mini-SIM/ Micro-SIM, dual stand-by)
S815
Mini-SIM
Keyboard
s4009 Crystal
-
S815
QWERTY
Type
s4009 Crystal
TFT
S815
TFT
Size
s4009 Crystal
4.0 inches, 45.5 cm2 (~54.3% screen-to-body ratio)
S815
2.4 inches, 17.8 cm2 (~29.2% screen-to-body ratio)
Resolution
s4009 Crystal
480 x 800 pixels, 5:3 ratio (~233 ppi density)
S815
320 x 240 pixels, 4:3 ratio (~167 ppi density)
OS
s4009 Crystal
Android 6.0 (Marshmallow)
S815
-
Chipset
s4009 Crystal
Mediatek MT6570 (28 nm)
S815
-
CPU
s4009 Crystal
Dual-core 1.3 GHz Cortex-A7
S815
-
GPU
s4009 Crystal
Mali-400
S815
-
Card slot
s4009 Crystal
microSDXC
S815
microSDHC (dedicated slot)
Internal
s4009 Crystal
8GB 512MB RAM
S815
-
Phonebook
s4009 Crystal
-
S815
1000 entries
Call records
s4009 Crystal
-
S815
Yes
Single
s4009 Crystal
5 MP, f/2.4
S815
2 MP
Features
s4009 Crystal
LED flash, panorama
S815
-
Video
s4009 Crystal
720p@30fps
S815
Yes
Single
s4009 Crystal
2 MP
S815
-
Video
s4009 Crystal
S815
-
Other
s4009 Crystal
-
S815
No
Loudspeaker
s4009 Crystal
Yes
S815
Yes
3.5mm jack
s4009 Crystal
Yes
S815
Yes
WLAN
s4009 Crystal
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
S815
No
Bluetooth
s4009 Crystal
4.0, A2DP, LE
S815
Yes
Positioning
s4009 Crystal
GPS
S815
No
NFC
s4009 Crystal
No
S815
-
Radio
s4009 Crystal
Stereo FM radio
S815
FM radio
USB
s4009 Crystal
microUSB 2.0
S815
Proprietary
Sensors
s4009 Crystal
Accelerometer
S815
Messaging
s4009 Crystal
-
S815
SMS, MMS, Email, IM
Games
s4009 Crystal
-
S815
Yes
Java
s4009 Crystal
-
S815
Yes, MIDP 2.0
Other
s4009 Crystal
-
S815
SNS applications MP3/MP4/3GP player Organizer Voice memo Predictive text input
Type
s4009 Crystal
Li-Ion 1200 mAh, removable
S815
Removable Li-Ion battery
Stand-by
s4009 Crystal
Up to 150 h (3G)
S815
Up to 192 h
Talk time
s4009 Crystal
Up to 4 h (3G)
S815
Up to 3 h
Colors
s4009 Crystal
Black/Gold
S815
Black
SAR
s4009 Crystal
1.13 W/kg (head) 0.81 W/kg (body)
S815
-