Samsung Galaxy A3 Duos vs HTC Desire 820q Dual SIM vs Samsung Galaxy E7

General Info

Manufacturer
Samsung	HTC	Samsung
Announced
October 2014	October 2014	January 2015
Status
Available - November 2014	Available - October 2014	Available - Feburary 2015
Price
Rs. 14,265 ($209.78) [Similarly Priced]	Rs. 30,500 ($448.53) [Similarly Priced]	Rs. 17,400 ($255.88) [Similarly Priced]
Colors
Pearl White, Midnight Black, Platinum Silver, Soft Pink, Light B	Santorini White, Tuxedo Gray, Milky-way Gray	Black, White, Blue
Form Factor
Candybar	Candybar	Candybar
Dimension
130.1 x 65.5 x 6.9 mm (5.12 x 2.58 x 0.27 in)	157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in)	151.4 x 77.2 x 7.3 mm (5.96 x 3.04 x 0.29 in)
Weight
110.3 g (3.88.0.11 oz)	155 g (5.47 oz)	141 g (4.97 oz)
2G Network
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (optional)
3G Network
HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100
4G Network
LTE	LTE 900 / 1800 / 2100 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 1, 3, 7, 8, 38, 39, 40, 41)	-
Messaging
SMS, MMS, EMail, IM	SMS, MMS, Push Mail, EMail	SMS, MMS, EMail, IM

OS
Android OS, v4.4.4 (KitKat)	Android OS, v4.4.2 (KitKat)	Android OS, v4.4.4 (KitKat)
Processor
Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410	Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410	Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410
GPU
Adreno 306	Adreno 306	Adreno 306
RAM
1 GB	1 GB	2 GB
Internal Memory
16 GB	16 GB	16 GB
External Memory
No	microSD, up to 128 GB	microSD, up to 128 GB

Type
Super AMOLED capacitive touchscreen	TFT Capacitive Touchscreen, Corning Gorilla Glass 3	Super AMOLED capacitive touchscreen
Colors
16M colors	16M colors	16M colors
Size
4.5 inches	5.5 inches	5.5 inches
Resolution
540 x 960 pixels (245 ppi)	720 x 1280 pixels (267 ppi)	720 x 1280 pixels (267 ppi)
Screen-to-Body Ratio
65.39%	67.20%	71.36%
Multi-Touch

Rear Camera
8 MP, 3264 x 2448 pixels	13 MP, 4160 x 3120 pixels	13 MP, 4128 x 3096 pixels
Flash
LED flash	LED flash	LED flash
Features
Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama	Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR	Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama
Video
-	1080p@30fps, 720p@60fps	1080p@30fps
Front Camera
5 MP	8 MP, 1080p	5 MP

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps	HSPA 42.2/5.76 Mbps, LTE	HSPA 42.2/5.76 Mbps
Bluetooth
v4.0, A2DP, EDR, LE	v4.0, A2DP, apt-X	v4.0, A2DP
Wi-Fi
Wi-Fi 802.11 b/g/n, Wi-Fi hotspot	Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, hotspot	Yes
USB
microUSB v2.0	microUSB v2.0	microUSB v2.0
GPS
Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS
Browser
HTML5	HTML5	HTML5