HTC Desire 820 vs Samsung Galaxy A3 vs HTC Desire 620G Dual SIM

General Info

Manufacturer
HTC	Samsung	HTC
Announced
September 2014	October 2014	December 2014
Status
Coming Soon - September 2014	Available - November 2014	Coming Soon - December 2014
Price
-	Rs. 14,265 ($209.78) [Similarly Priced]	Rs. 6,949 ($102.19) [Similarly Priced]
Colors
Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tang	Pearl White, Midnight Black, Platinum Silver, Soft Pink, Light B	Black, White
Form Factor
Candybar	Candybar	Candybar
Dimension
157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in)	130.1 x 65.5 x 6.9 mm ( 5.12 x 2.58 x 0.27 in)	150.1 x 72.7 x 9.6 mm (5.91 x 2.86 x 0.38 in)
Weight
155 g (5.47 oz)	110.3 g (3.88.0.11 oz)	160 g (5.64 oz)
2G Network
GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network
HSDPA 850 / 900 / 1900 / 2100 - EMEA version HSDPA 900 / 2100 - Asia version	HSDPA 850 / 1900 / 2100	HSDPA 900 / 2100
4G Network
LTE 900 / 1800 / 2100 / 2600 - EMEA version	LTE	-
Messaging
SMS, MMS, Push Mail, EMail	SMS, MMS, Push Mail, EMail, IM	SMS, MMS, Push Mail, EMail

OS
Android OS, v4.4.2 (KitKat)	Android OS, v4.4.2 (KitKat)	Android OS, v4.4.4 (KitKat)
Processor
Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615	Quad-core 1.2 GHz,	Octa-core 1.7 GHz Cortex-A7, Mediatek MT6592
GPU
Adreno 405	-	Mali-450MP4
RAM
2 GB	1 GB	1 GB
Internal Memory
16 GB	16 GB	8 GB
External Memory
microSD, up to 128 GB	microSD, up to 64 GB	microSD, up to 32 GB

Type
LCD Capacitive Touchscreen	Super AMOLED Capacitive Touchscreen	Capacitive touchscreen
Colors
16M colors	16M colors	16M colors
Size
5.5 inches	4.5 inches	5.0 inches
Resolution
720 x 1280 pixels (267 ppi)	540 x 960 pixels (245 ppi)	720 x 1280 pixels (294 ppi)
Screen-to-Body Ratio
67.20%	65.39%	63.04%
Multi-Touch

Rear Camera
13 MP, 4160 x 3120 pixels	8 MP, 3264x2448 pixels	8 MP, 3264 x 2448 pixels
Flash
LED flash	LED flash	LED flash
Features
Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR	Auto focus, Geo-tagging, Face Detection, Panorama, HDR, Wide Selfie, Rear-cam Selfie	Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama
Video
1080p@30fps, 720p@60fps	1080p@30fps	1080p@30fps
Front Camera
8 MP, 1080p	5 MP	5 MP

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL	HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL	HSPA
Bluetooth
v4.0, A2DP	v4.0, BLE, ANT+	v4.0, A2DP, apt-X
Wi-Fi
Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi hotspot	Wi-Fi 802.11 b/g/n, hotspot
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