HTC Desire 820s dual sim vs HTC Desire 830 vs HTC One M9 Prime Camera

General Info

Manufacturer
HTC	HTC	HTC
Announced
March 2015	May 2016	May 2016
Status
Available - March 2015	Coming Soon - May 2016	Available - May 2016
Price
Rs. 27,900 ($410.29) [Similarly Priced]	Rs. 17,100 ($251.47) [Similarly Priced]	Rs. 21,499 ($316.16) [Similarly Priced]
Colors
Marble White, Milkyway Gray, Monarch Orange, Santorini White, Tu	White/Blue, White/Red	Gunmetal Gray, Gold, Silver/Gold
Form Factor
Candybar	Candybar	Candybar
Dimension
157.7 x 78.7 x 7.7 mm (6.21 x 3.1 x 0.3 in)	157.5 x 78.9 x 7.8 mm (6.2 x 3.11 x 0.31 in)	144.6 x 69.7 x 9.6 mm (5.69 x 2.74 x 0.38 in)
Weight
155 g (5.47 oz)	-	158 g (5.57 oz)
2G Network
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 TD-SCDMA 1900 / 2000	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900
3G Network
HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100
4G Network
LTE 900 / 1800 / 2100 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 1, 3, 7, 8, 38, 39, 40, 41)	LTE	LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 28(700), 38(2600), 40(2300), 41(2500)
Messaging
SMS, MMS, Push Mail, EMail	SMS, MMS, EMail, IM	SMS, MMS, Push Mail, EMail

OS
Android OS, v4.4.4 (KitKat)	Android OS, v6.0 (Marshmallow)	Android OS, v5.0 (Lollipop)
Processor
Octa-core 1.7 GHz Cortex-A53, Mediatek MT6752	Octa-core 1.3 GHz Cortex-A53, Mediatek MT6753	Octa-core 2.2 GHz Cortex-A53, Mediatek MT6795T Helio X10
GPU
Mali-T760MP2	Mali-T720MP3	PowerVR G6200
RAM
2 GB	3 GB	2 GB
Internal Memory
16 GB	32 GB	16 GB
External Memory
microSD, up to 32 GB	microSD, up to 128 GB (dedicated slot)	microSD, up to 200 GB (dedicated slot)

Type
Capacitive Touchscreen, Corning Gorilla Glass 3	Super LCD capacitive touchscreen	Super LCD3 Capacitive Touchscreen, Corning Gorilla Glass
Colors
16M colors	16M colors	16M colors
Size
5.5 inches	5.5 inches	5.0 inches
Resolution
720 x 1280 pixels (267 ppi)	1080 x 1920 pixels (401 ppi)	1080 x 1920 pixels (441 ppi)
Screen-to-Body Ratio
67.20%	66.95%	68.25%
Multi-Touch

Rear Camera
13 MP, 4160 x 3120 pixels	13 MP	13 MP
Flash
LED flash	LED Flash	Dual-LED (Dual Tone)
Features
Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama	Auto focus, f/2.0, OIS, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama	Autofocus, f/2.0, 28mm, OIS, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama
Video
1080p@30fps	1080p@30fps	1080p@30fps
Front Camera
8 MP, 1080p	4 MP, f/2.0, 1/3" sensor size, 2µm pixel size, 1080p@30fps	4 MP, f/2.0, 27mm, 1/3" sensor size, 2µm pixel size, 1080p@30fps, HDR

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps	HSPA, LTE	HSPA 42.2/21.1 Mbps, LTE Cat6 300/50 Mbps
Bluetooth
v4.0, A2DP	v4.1, A2DP	v4.1, A2DP, aptX
Wi-Fi
Wi-Fi 802.11 b/g/n, hotspot	Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct, hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot
USB
microUSB v2.0	microUSB v2.0	microUSB v2.0 (MHL 3.0 TV-out), USB Host
GPS
Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS, BDS
Browser
HTML5	HTML5	HTML5

Internal
16 GB, 2 GB RAM	32 GB, 3 GB RAM	16 GB, 2 GB RAM
Expandable Storage
microSD, up to 32 GB	microSD, up to 128 GB (dedicated slot)	microSD, up to 200 GB (dedicated slot)
USB OTG
-	-	Supported