Sources and limitations

Listed specifications are reference information, not results of TechMyte testing. Rumored details may change, and hardware or supported features can differ by region. Confirm the exact model with its manufacturer before buying.

Battery capacity does not establish tested endurance; megapixel count does not establish camera quality. Use the comparison tool to identify differences, then check the features that matter to your use.

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Technical data sheet

Full Specifications

Network

Technology	GSM / HSPA / LTE
2G bands	GSM 850 / 900 / 1800 / 1900
3G bands	HSDPA 850 / 900 / 1900 / 2100
4G bands	1, 3, 7, 8, 20
Speed	HSPA 42.2/5.76 Mbps, LTE Cat3 100/50 Mbps

Launch

Announced	2012, September. Released 2012, November
Status	Discontinued

Body

Dimensions	123.8 x 68.5 x 9.9 mm, 83.5 cc (4.87 x 2.70 x 0.39 in)
Weight	160 g (5.64 oz)
SIM	Micro-SIM

Battery

Type	AMOLED
Talk time	Up to 14 h (2G) / Up to 8 h (3G)
Stand-by	Up to 330 h (2G) / Up to 330 h (3G)
Music play	Up to 55 h

Display

Size	4.3 inches, 52.6 cm2 (~62.1% screen-to-body ratio)
Resolution	480 x 800 pixels, 5:3 ratio (~217 ppi density)

Platform

OS	Microsoft Windows Phone 8, upgradable to 8.1
Chipset	Qualcomm MSM8960 Snapdragon S4 Plus
CPU	Dual-core 1.5 GHz Krait
GPU	Adreno 225

Memory

Card slot	microSDXC (dedicated slot)
Internal	8GB 1GB RAM

Selfie camera

Single	8 MP, AF
Video	1080p@30fps

Sound

Loudspeaker	Yes
3.5mm jack	Yes

Comms

WLAN	Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct
Bluetooth	4.0, A2DP, EDR, LE/ aptX after WP8 Denim update
Positioning	GPS, A-GPS, GLONASS
NFC	Yes
Radio	FM radio
USB	microUSB 2.0

Features

Sensors	Accelerometer, gyro, proximity, compass

Misc

Colors	Black, Gray, Red, Yellow, White, Blue, Violet
Price	About 170 EUR
SAR EU	0.79 W/kg (head)
SAR	1.37 W/kg (head)     0.71 W/kg (body)

Main Camera

Features	Carl Zeiss optics, dual-LED flash

Tests

Display	Contrast ratio: Infinite (nominal) / 2.193:1 (sunlight)
Camera	Photo / Video
Loudspeaker	Voice 67dB / Noise 66dB / Ring 70dB
Audio quality	Noise -82.2dB / Crosstalk -81.4dB
Battery (old)	Endurance rating 40h

Nokia Lumia 820