Phone Comparison - HTC One Dual Sim vs HTC Desire 816 vs HTC Desire 820

general General Info

Manufacturer HTC HTC HTC
Announced June 2013 February 2014 September 2014
Status Available - August 2013 Available - March 2014 Coming Soon - September 2014
Colors Silver Red, Grey, Green, Cyan, White, Black Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tang
Form Factor Candybar Candybar Candybar
Dimension 137.8 x 69.3 x 10.4 mm
(5.43 x 2.73 x 0.41 in)
156.6 x 78.7 x 8 mm
(6.17 x 3.1 x 0.31 in)
157.7 x 78.7 x 7.7 mm
(6.21 x 3.1 x 0.3 in)
Weight 156 g (5.5 oz) 165 g (5.82 oz) 155 g (5.47 oz)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1900 / 2100 HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1900 / 2100 - EMEA version
HSDPA 900 / 2100 - Asia version
4G Network - LTE 800 / 900 / 1800 / 2600 - EMEA
LTE 900 / 1800 / 2100 / 2600 - Asia
LTE 900 / 1800 / 2100 / 2600 - EMEA version
Messaging SMS, MMS, Push Mail, EMail SMS, MMS, Push Mail, EMail SMS, MMS, Push Mail, EMail

hardware Hardware and OS

OS Android OS, v4.1.2 (Jelly Bean) with HTC Sense 5, upgradable to v4.2.2 (Jelly Bean) Android OS, v4.4.2 (KitKat) Android OS, v4.4.2 (KitKat)
Processor Quad-core 1.7 GHz Krait 300, Qualcomm APQ8064T Snapdragon 600 Quad-core 1.6 GHz Cortex-A7, Qualcomm MSM8928 Snapdragon 400 Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615
GPU Adreno 320 Adreno 305 Adreno 405
RAM 2 GB 1.5 GB 2 GB
Internal Memory 16/32 GB 8 GB ROM 16 GB
External Memory microSD, up to 64 GB microSD, up to 64 GB microSD, up to 128 GB

display Display

Type IPS LCD Capacitive Touchscreen, Gorilla Glass 2 Capacitive Touchscreen LCD Capacitive Touchscreen
Colors 16M colors 16M colors 16M colors
Size 4.68 inches 5.5 inches 5.5 inches
Resolution 1080 x 1920 pixels (471 ppi) 720 x 1280 pixels (267 ppi) 720 x 1280 pixels (267 ppi)
Screen-to-Body Ratio 63.15% 67.67% 67.20%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio Stereo FM radio with RDS - No
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 4 MP, 2688 x 1520 pixels 13 MP, 4160 x 3120 pixels 13 MP, 4160 x 3120 pixels
Flash LED flash LED flash LED flash
Features Auto focus, 1/3' Sensor Size, 2�m Pixel Size, Simultaneous HD Video And Image Recording, Geo-tagging, Face And Smile Detection, Optical Image Stabilization Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR Auto focus, Geo-tagging, Touch Focus, Face Detection, Simultaneous HD Video And Image Recording, HDR
Video Yes, 1080p@30fps, 720p@60fps, HDR, stereo sound rec., video stabilization Yes, 720p 1080p@30fps, 720p@60fps
Front Camera Yes, 2.1 MP, 1080p@30fps, HDR [Similar] Yes, 5 MP, 720p [Similar] 8 MP, 1080p [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSDPA, 21 Mbps; HSUPA, 5.76 Mbps HSDPA, HSUPA; LTE HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL
Bluetooth Yes, v4.0 with A2DP Yes, v4.0 with A2DP v4.0, A2DP
Wi-Fi Wi-Fi 802.11 a/ac/b/g/n, Wi-Fi Direct, DLNA, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n, dual-band, DLNA, Wi-Fi Direct, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot
USB Yes, microUSB v2.0 (MHL) Yes, microUSB v2.0 microUSB v2.0
GPS Yes, with A-GPS support and GLONASS Yes, with A-GPS support Yes, with A-GPS, GLONASS
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 16/32 GB, 2 GB RAM 8 GB ROM, 1.5 GB RAM 16 GB, 2 GB RAM
Expandable Storage microSD, up to 64 GB microSD, up to 64 GB microSD, up to 128 GB

Apps Sensors

Fingerprint fingerprint not supported fingerprint not supported fingerprint not supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
NFC NFC supported NFC supported NFC not supported

battery Battery

Type Non-removable Li-Po Battery Non-removable Li-Po Battery Non-removable Li-Po Battery
Capacity 2300 mAh 2600 mAh 2600 mAh
Stand by Up to 500 h (2G)
Up to 480 h (3G)
- Up to 424 h (3G)
Talk Time Up to 27 h (2G)
Up to 18 h (3G)
- Up to 22 h 24 min (3G)