HTC Desire 820 vs HTC Desire 620 Dual SIM

General Info

Manufacturer
HTC	HTC
Announced
September 2014	December 2014
Status
Coming Soon - September 2014	Available - December 2014
Colors
Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tang	Blue, Black, Gray, White
Form Factor
Candybar	Candybar
Dimension
157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 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)	160 g (5.64 oz)
2G Network
GSM 850 / 900 / 1800 / 1900	GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network
HSDPA 850 / 900 / 1900 / 2100 - EMEA version HSDPA 900 / 2100 - Asia version	HSDPA 850 / 900 / 1900 / 2100
4G Network
LTE 900 / 1800 / 2100 / 2600 - EMEA version	LTE 900 / 1800 / 2100 / 2600 TD-LTE 1900 / 2300 / 2600
Messaging
SMS, MMS, Push Mail, EMail	SMS, MMS, Push Mail, EMail

OS
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 [Similar]	Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 [Similar]
GPU
Adreno 405 [Similar]	Adreno 306 [Similar]
RAM
2 GB [Browse Similar]	1 GB [Browse Similar]
Internal Memory
16 GB	8 GB
External Memory
microSD, up to 128 GB	microSD, up to 128 GB

Rear Camera
13 MP, 4160 x 3120 pixels [Similar]	8 MP, 3264 x 2448 pixels [Similar]
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, Touch Focus, Face Detection, Panorama
Video
1080p@30fps, 720p@60fps	1080p@30fps
Front Camera
8 MP, 1080p [Similar]	5 MP [Similar]

GPRS
Yes	Yes
Edge
Yes	Yes
3G
HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL	HSPA, LTE
Bluetooth
v4.0, A2DP	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 b/g/n, hotspot
USB
microUSB v2.0	microUSB v2.0
GPS
Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS
Browser
HTML5	HTML5