Screen size
W8578Winner: 3.5"+8.6%
X8153.2"
Quick verdict
W8578 leads the measured specs 6-2.
Measured wins
W8578
6
spec wins
Overall winner
Ties
5
equal specs
X815
2
spec wins
Screen size
Technology
W8578
GSM / HSPA
X815
GSM
2G bands
W8578
GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
X815
GSM 900 / 1800 / 1900 - SIM 1, GSM 900 / 1800 / 1900 - SIM 2
3G bands
W8578
HSDPA 900 / 2100
X815
-
Speed
W8578
HSPA 3.6/0.384 Mbps
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
X815
-
GPRS
W8578
-
X815
Yes
EDGE
W8578
-
X815
Yes
Announced
W8578
2014, April. Released 2014, April
X815
2011, February. Released 2011, March
Status
W8578
Discontinued
X815
Discontinued
Dimensions
W8578
116 x 60 x 21 mm (4.57 x 2.36 x 0.83 in)
X815
113.3 x 55.6 x 14.6 mm (4.46 x 2.19 x 0.57 in)
Weight
W8578
217 g (7.65 oz)
X815
139 g (4.90 oz)
SIM
W8578
Dual SIM
X815
Dual SIM (Mini-SIM)
Type
W8578
TFT, 256K colors
X815
TFT resistive touchscreen, 256K colors
Size
W8578
3.5 inches, 34.9 cm2 (~50.1% screen-to-body ratio)
X815
3.2 inches, 29.1 cm2 (~46.3% screen-to-body ratio)
Resolution
W8578
480 x 800 pixels, 5:3 ratio (~267 ppi density)
X815
240 x 400 pixels, 5:3 ratio (~146 ppi density)
Other
W8578
Secondary TFT, 256K colors 240 x 320 pixels, 2.6 inches
X815
Handwriting recognition
OS
W8578
Android 4.2 (Jelly Bean)
X815
-
Card slot
W8578
microSDHC (dedicated slot)
X815
microSDHC (dedicated slot)
Internal
W8578
512MB 256MB RAM
X815
47MB
Phonebook
W8578
-
X815
Yes, Photocall
Call records
W8578
-
X815
Yes
Single
W8578
5 MP
X815
5 MP, AF
Features
W8578
LED flash
X815
LED flash
Video
W8578
Yes
X815
480p@15fps
Other
W8578
No
X815
No
Loudspeaker
W8578
Yes
X815
Yes
3.5mm jack
W8578
Yes
X815
Yes
WLAN
W8578
Wi-Fi 802.11 b/g
X815
No
Bluetooth
W8578
2.1, EDR
X815
2.0, A2DP, EDR
Positioning
W8578
No
X815
GPS, A-GPS
NFC
W8578
No
X815
-
Radio
W8578
FM radio
X815
FM radio
USB
W8578
microUSB 2.0
X815
miniUSB 2.0
Sensors
W8578
Accelerometer
X815
Accelerometer
Other
W8578
SNS integration MP3/WAV/WMA/eAAC+ player MP4/H.263 player Document viewer Photo viewer Organizer Voice memo Predictive text input
X815
MP3/AAC+/WAV player MP4/H.263 player Organizer Voice memo Predictive text input
Messaging
W8578
-
X815
SMS, MMS, Email, IM
Browser
W8578
-
X815
WAP 2.0/xHTML
Games
W8578
-
X815
Yes + downloadable
Java
W8578
-
X815
Yes, MIDP 2.0
Type
W8578
Li-Ion 2000 mAh, removable
X815
Removable Li-Ion 1530 mAh battery
Stand-by
W8578
Up to 850 h
X815
Up to 720 h
Talk time
W8578
Up to 9 h
X815
Up to 12 h
Colors
W8578
Black
X815
Black
Price
W8578
-
X815
About 350 EUR