HTC Raider 4G vs HTC Velocity 4G vs HTC Desire 820

General Info

Manufacturer
HTC	HTC	HTC
Announced
September 2011	January 2012	September 2014
Status
Available - October 2011	Available - January 2012	Coming Soon - September 2014
Colors
Black	Black	Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tang
Form Factor
Candybar	Candybar	Candybar
Dimension
128 x 67 x 11.2 mm (5.04 x 2.64 x 0.44 in)	126.1 x 57 x 11.3 mm (4.96 x 2.24 x 0.44 in)	157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in)
Weight
177 g (6.24 oz)	163.8 g (5.75.0.28 oz)	155 g (5.47 oz)
2G Network
CDMA 800 / 1900 GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900
3G Network
CDMA2000 1xEV-DO HSDPA 850 / 1900 / 2100 or HSDPA 2100	HSDPA 850 / 2100	HSDPA 850 / 900 / 1900 / 2100 - EMEA version HSDPA 900 / 2100 - Asia version
4G Network
LTE 850	LTE 1800	LTE 900 / 1800 / 2100 / 2600 - EMEA version
Messaging
SMS, MMS, Push Mail, EMail, IM	SMS, MMS, Push Mail, EMail	SMS, MMS, Push Mail, EMail

OS
Android OS, v2.3.4 (Gingerbread)	Android OS, v2.3.7 (Gingerbread)	Android OS, v4.4.2 (KitKat)
Processor
Dual-core 1.2 GHz,	Dual-core 1.5 GHz Scorpion, Qualcomm MSM8260 Snapdragon	Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615
GPU
	Adreno 220	Adreno 405
RAM
1 GB	1 GB	2 GB
Internal Memory
16 GB storage	16 GB (13 GB user available)	16 GB
External Memory
microSD, up to 32GB	microSD, up to 32GB	microSD, up to 128 GB

Type
TFT capacitive touchscreen	S-LCD capacitive touchscreen	LCD Capacitive Touchscreen
Colors
16M colors	16M colors	16M colors
Size
4.5 inches	4.5 inches	5.5 inches
Resolution
540 x 960 pixels (245 ppi)	540 x 960 pixels (245 ppi)	720 x 1280 pixels (267 ppi)
Screen-to-Body Ratio
64.97%	77.52%	67.20%
Multi-Touch

Rear Camera
8 MP, 3264x2448 pixels	8 MP, 3264x2448 pixels	13 MP, 4160 x 3120 pixels
Flash
dual-LED flash	dual-LED flash	LED flash
Features
Auto focus, Geo-tagging	Auto focus, Geo-tagging, Image Stabilization, Face Detection, Instant Capture	Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR
Video
Yes, 1080p	Yes, 1080p@60fps	1080p@30fps, 720p@60fps
Front Camera
Yes, 1.3 MP	Yes, 1.3 MP, 720p	8 MP, 1080p

GPRS
Up to 80 kbps	Yes	Yes
Edge
Up to 236.8 kbps	Yes	Yes
3G
Rev.A, up to 3.1 Mbps; LTE, 75 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps	HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE, 50 Mbps UL, 100 Mbps DL	HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL
Bluetooth
Yes, v3.0 with A2DP, EDR	Yes, with A2DP	v4.0, A2DP
Wi-Fi
Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi hotspot	Wi-Fi 802.11 b/g/n, Wi-Fi hotspot	Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot
USB
Yes, microUSB (MHL) v2.0	Yes, microUSB v2.0	microUSB v2.0
GPS
Yes, with A-GPS support	Yes, with A-GPS support	Yes, with A-GPS, GLONASS
Browser
HTML, Adobe Flash	HTML5, Adobe Flash	HTML5