Karbonn Smart A51 vs XOLO Win Q900s

General Info

Manufacturer
Karbonn	XOLO
Announced
September 2013	June 2014
Status
Available - September 2013	Available - July 2014
Colors
White Silver	Black, White
Form Factor
Candybar	Candybar
Dimension
-	135.8 x 67.2 x 7.2 mm (5.35 x 2.65 x 0.28 in)
Weight
-	100 g (3.53 oz)
2G Network
GSM 900 / 1800 - SIM 1 & SIM 2	GSM 900 / 1800 - SIM 1 & SIM 2
3G Network
No	HSDPA 2100
Messaging
SMS, MMS, EMail, IM	SMS, MMS, Push Mail, EMail, IM
Build Features
-	cratch Resistant Dragon Trail Glass Protection

Type
TFT capacitive touchscreen	IPS LCD Capacitive Touchscreen, OGS
Colors
16M colors	16M colors
Size
3.5 inches [Similar]	4.7 inches [Similar]
Resolution
320 x 480 pixels (165 ppi)	720 x 1280 pixels (312 ppi) [Similar]
Screen-to-Body Ratio
-	66.93%
Multi-Touch

OS
Android OS, v4.0 (Ice Cream Sandwich)	Microsoft Windows Phone 8.1
Processor
1 GHz [Similar]	Quad-core 1.2 GHz Cortex-A7, Qualcomm MSM8212 Snapdragon 200 [Similar]
GPU
-	Adreno 302 [Similar]
RAM
256 MB [Browse Similar]	1 GB [Browse Similar]
Internal Memory
512 MB (100 MB user available)	8 GB ROM (5 GB for mass storage and apps)
External Memory
microSD, up to 32 GB	microSD, up to 32 GB

Rear Camera
3.15 MP, 2048x1536 pixels [Similar]	8 MP, 3264x2448 pixels [Similar]
Flash
LED flash	LED Flash
Features
-	Auto focus, Geo-tagging, Panorama
Video
Yes	Yes, 720p@30fps
Front Camera
Yes, VGA [Similar]	Yes, 2 MP [Similar]

GPRS
Yes	Yes
Edge
Yes	Yes
3G
No	HSDPA, 21 Mbps; HSUPA, 5.76 Mbps
Bluetooth
Yes	Yes, v4.0 with A2DP
Wi-Fi
Wi-Fi 802.11 b/g, Wi-Fi hotspot	Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi hotspot
USB
Yes	Yes, microUSB v2.0
GPS
No	Yes, with A-GPS support and GLONASS
Browser
HTML	HTML5

Internal
512 MB (100 MB user available), 256 MB RAM	8 GB ROM (5 GB for mass storage and apps), 1 GB RAM
Expandable Storage
microSD, up to 32 GB	microSD, up to 32 GB