Apple iPhone 4 vs HTC One X vs HTC Desire 820

General Info

Manufacturer
Apple	HTC	HTC
Announced
June 2010	February 2012	September 2014
Status
Available - June 2010	Available from April 2012	Coming Soon - September 2014
Colors
Black, White	Black	Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tang
Form Factor
Candybar	Candybar	Candybar
Dimension
115.2 x 58.6 x 9.3 mm (4.54 x 2.31 x 0.37 in)	134.4 x 69.9 x 9.3 mm (5.29 x 2.75 x 0.37 in)	157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in)
Weight
137 g (4.83 oz)	130 g (4.59 oz)	155 g (5.47 oz)
2G Network
GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900
3G Network
HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 2100	HSDPA 850 / 900 / 1900 / 2100 - EMEA version HSDPA 900 / 2100 - Asia version
4G Network
-	-	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
iOS 4, upgradable to iOS 5	Android OS, v4.0 (Ice Cream Sandwich)	Android OS, v4.4.2 (KitKat)
Processor
1 GHz Cortex-A8, Apple A4	Quad-core 1.5 GHz, Nvidia Tegra 3	Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615
GPU
PowerVR SGX535	ULP GeForce	Adreno 405
RAM
512 MB	1 GB	2 GB
Internal Memory
8/16/32 GB storage	32 GB storage	16 GB
External Memory
No	No	microSD, up to 128 GB

Type
LED-backlit IPS TFT, capacitive touchscreen	Capacitive touchscreen	LCD Capacitive Touchscreen
Colors
16M colors	16M colors	16M colors
Size
3.5 inches	4.7 inches	5.5 inches
Resolution
640 x 960 pixels (330 ppi)	720 x 1280 pixels (312 ppi)	720 x 1280 pixels (267 ppi)
Screen-to-Body Ratio
53.92%	65.02%	67.20%
Multi-Touch

Rear Camera
5 MP, 2592 x 1944 pixels	8 MP, 3264x2448 pixels	13 MP, 4160 x 3120 pixels
Flash
LED flash	LED flash	LED flash
Features
Auto focus, Touch Focus, Geo-tagging, HDR	Auto focus, Geo-tagging, Face Detection	Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR
Video
Yes, 720p@30fps, LED video light, geo-tagging	Yes, 1080p	1080p@30fps, 720p@60fps
Front Camera
Yes, videocalling over Wi-Fi only	Yes	8 MP, 1080p

GPRS
Class 10 (4+1/3+2 slots), 32 - 48 kbps	Yes	Yes
Edge
Class 10, 236.8 kbps	Yes	Yes
3G
HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps	HSDPA, 21 Mbps; HSUPA, 5.76 Mbps	HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL
Bluetooth
Yes, v2.1 with A2DP	Yes, v3.0 with A2DP, EDR	v4.0, A2DP
Wi-Fi
Wi-Fi 802.11 b/g/n, Wi-Fi hotspot	Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi hotspot	Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot
USB
Yes, 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 (Safari)	HTML, Adobe Flash	HTML5