Nokia Lumia 820 vs Nokia Lumia 900

Key Specs

Battery
Battery	1650 mAh	1830 mAh
Display
Display	4.3 inches (10.92 cm)	4.3 inches (10.92 cm)
Front Camera
Front Camera	0.3 MP	1 MP
Processor
Processor	Qualcomm Snapdragon S4 Plus MSM8960	Qualcomm Snapdragon S2
RAM
RAM	1 GB	512 MB
Rear Camera
Rear Camera	8 MP	8 MP

Battery

Capacity
Capacity	1650 mAh	1830 mAh
Removable
Removable	Yes	No
Standby time
Standby Time	Up to 330 Hours(3G) / Up to 330 Hours(2G)	Up to 300 Hours(3G) / Up to 288 Hours(2G)
TalkTime
TalkTime	Up to 8.1 Hours(3G) / Up to 15.4 Hours(2G)	Up to 7 Hours(3G) / Up to 7 Hours(2G)
Type
Type	Li-ion	Li-ion
USB Type-C
USB Type-C	-	No

Design

Colours
Colours	Black, Blue, Grey, Red, White, Yellow	Black, White, Cyan, Magenta
Height
Height	123.8 mm	127.8 mm
Thickness
Thickness	9.90 mm	11.50 mm
Weight
Weight	160 grams	160 grams
Width
Width	68.5 mm	68.5 mm

Display

Display Type
Display Type	AMOLED	AMOLED
Pixel Density
Pixel Density	217 ppi	217 ppi
Resolution
Resolution	480x800 px	480x800 px
Screen Protection
Screen Protection	-	Corning Gorilla Glass
Screen Size
Screen Size	4.3 inches (10.92 cm)	4.3 inches (10.92 cm)
Screen to Body Ratio (calculated)
Screen to Body Ratio (calculated)	62.06 %	60.12 %
Touch Screen
Touch Screen	Yes, Capacitive Touchscreen, Multi-touch	Yes, Capacitive Touchscreen, Multi-touch

Front Camera

Camera Features
Camera Features	Fixed Focus	-
Flash
Flash	-	No
Resolution
Resolution	0.3 MP, Primary Camera	1 MP, Primary Camera

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General

Brand
Brand	Nokia	Nokia
Launch Date
Launch Date	January 10, 2013 (Official)	April 8, 2012 (Official)
Operating System
Operating System	Windows Phone v8	Windows Phone v7.5 (Mango)

Main Camera

Autofocus
Autofocus	Yes	Yes
Camera Features
Camera Features	4 x Digital Zoom	3 x Digital Zoom
Camera Setup
Camera Setup	Single	Single
Flash
Flash	Yes, Dual LED Flash	Yes, Dual LED Flash
Image Resolution
Image Resolution	3264 x 2448 Pixels	3248 x 2448 Pixels
Resolution
Resolution	8 MP, Primary Camera(26 mm focal length)	8 MP f/2.2, Primary Camera(28 mm focal length)
Video Recording
Video Recording	1920x1080 @ 30 fps	1280x720 @ 30 fps
Video Recording Features
Video Recording Features	Optical Image stabilization Stereo recording	-

Multimedia

Audio Jack
Audio Jack	3.5 mm	3.5 mm
FM Radio
FM Radio	Yes	Yes, RDS
Loudspeaker
Loudspeaker	Yes	Yes

Network & Connectivity

Bluetooth
Bluetooth	Yes, v4.0	Yes, v2.1
GPS
GPS	Yes with A-GPS, Glonass	Yes with A-GPS, Glonass
NFC
NFC	-	No
Network Support
Network Support	5G Not Supported in India, 4G Not Supported in India, 3G, 2G	5G Not Supported in India, 3G, 2G
SIM 1
SIM 1	4G Bands: FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 800(band 20) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz 4G Speed: 50 Mbit/s ↑ 150 Mbit/s ↓ (LTE category 3) 3G Speed: HSDPA 42 Mbit/s ↓, HSUPA 5.76 Mbit/s ↑ GPRS: Class 12, 32 - 48 kbps EDGE: Class 12	3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz 3G Speed: HSDPA 42 Mbit/s ↓, HSUPA 5.76 Mbit/s ↑ GPRS: Class 33 EDGE: Class 33
SIM Size
SIM Size	SIM1: Micro	SIM1: Micro
SIM Slot(s)
SIM Slot(s)	Single SIM, GSM	Single SIM, GSM
USB Connectivity
USB Connectivity	USB charging, microUSB, microUSB 2.0	microUSB 2.0
Wi-Fi
Wi-Fi	Yes, Wi-Fi 4 (802.11 a/b/g/n)	Yes, Wi-Fi 4 (802.11 b/g/n)
Wi-Fi Features
Wi-Fi Features	Wi-Fi Direct	-

Performance

CPU
CPU	Dual core, 1.5 GHz, Krait	Single core, 1.4 GHz, Scorpion
Chipset
Chipset	Qualcomm Snapdragon S4 Plus MSM8960	Qualcomm Snapdragon S2
Graphics
Graphics	Adreno 225	Adreno 205

Sensors

Fingerprint Sensor
Fingerprint Sensor	No	No
Other Sensors
Other Sensors	Light sensor, Proximity sensor, Accelerometer, Compass	Proximity sensor, Accelerometer, Gyroscope

Storage

Expandable Memory
Expandable Memory	Yes, Up to 64 GB	No
Internal Memory
Internal Memory	8 GB	16 GB
USB OTG
USB OTG	-	No