Phone Comparison - Nokia Lumia 820 vs Microsoft Lumia 640 LTE vs Microsoft Lumia 550

general General Info

Manufacturer Nokia Microsoft Microsoft
Announced Expected September 2012 March 2015 October 2015
Status Available - November 2012 Available - April 2015 Available - December 2015
Price - Rs. 7,999 ($117.63) [Similarly Priced] Rs. 7,999 ($117.63) [Similarly Priced]
Colors Black, Gray, Red, Yellow, White, Blue, Violet Yes Black, White
Form Factor Candybar Candybar Candybar
Dimension 123.8 x 68.5 x 9.9 mm
(4.87 x 2.7 x 0.39 in)
141.3 x 72.2 x 8.8 mm
(5.56 x 2.84 x 0.35 in)
136.1 x 67.8 x 9.9 mm
(5.36 x 2.67 x 0.39 in)
Weight 160 g (5.64 oz) 145 g (5.11 oz) 141.9 (4.97.0.32)
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 / 2100
4G Network LTE 800 / 1800 / 2600 / 2100/ 900 LTE LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800)
Messaging SMS, MMS, Push Mail, EMail, IM SMS, MMS, Push Mail, EMail, IM SMS, MMS, Push Mail, EMail, IM

hardware Hardware and OS

OS Microsoft Windows Phone 8 Microsoft Windows Phone 8.1 with Lumia Denim Microsoft Windows 10
Processor Dual-core 1.5 GHz Krait, Qualcomm MSM8960 Snapdragon Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 Quad-core 1.1 GHz Cortex-A7, Qualcomm MSM8909 Snapdragon 210
GPU Adreno 225 Adreno 305 Adreno 304
RAM 1 GB 1 GB 1 GB
Internal Memory 8 GB storage 8 GB 8 GB
External Memory microSD, up to 32 GB microSD, up to 128 GB microSD, up to 200 GB

display Display

Type AMOLED capacitive touchscreen IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display Capacitive touchscreen
Colors 16M colors 16M colors 16M colors
Size 4.3 inches 5.0 inches 4.7 inches
Resolution 480 x 800 pixels (217 ppi) 720 x 1280 pixels (294 ppi) 720 x 1280 pixels (315 ppi)
Screen-to-Body Ratio 62.04% 67.43% 64.94%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio No FM radio FM radio
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 8 MP, 3264x2448 pixels, Carl Zeiss Tessa 8 MP, 3264 x 2448 pixels 5 MP, 2592 х 1944 pixels
Flash LED flash LED flash LED flash
Features Auto focus, Geo-tagging Auto focus, 1/4'' Sensor Size Auto focus, 1/4' Sensor Size, Geo-tagging, Touch Focus
Video Yes 1080p@30fps 720p@30fps
Front Camera Yes [Similar] 1 MP, 720p [Similar] 2 MP, 480p [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSDPA, 42 Mbps
HSUPA, 5.76 Mbps
LTE, Cat3, 50 Mbps UL, 100 Mbps DL
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Bluetooth Yes, v3.1 with A2DP, EDR v4.0, A2DP v4.1, A2DP
Wi-Fi Wi-Fi 802.11 b/g/n Wi-Fi 802.11 b/g/n, DLNA, hotspot Wi-Fi 802.11 b/g/n, hotspot
USB Yes, microUSB v2.0 microUSB v2.0 microUSB v2.0
GPS Yes, with A-GPS support Yes, with A-GPS, GLONASS, Beidou Yes, with A-GPS, GLONASS, Beidou
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 8 GB storage, 1 GB RAM 8 GB, 1 GB RAM 8 GB, 1 GB RAM
Expandable Storage microSD, up to 32 GB microSD, up to 128 GB microSD, up to 200 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 Standard battery, Li-Ion Li-Ion Battery Li-Ion Battery
Capacity 1650 mAh 2500 mAh 2100 mAh
Stand by Up to 330 h (2G)
Up to 330 h (3G)
Up to 864 h (2G)
Up to 864 h (3G)
Up to 672 h (2G)
Up to 672 h (3G)
Talk Time Up to 14 h (2G)
Up to 8 h (3G)
Up to 26 h 30 min (2G)
Up to 17 h 30 min (3G)
Up to 16 h (2G)
Up to 14 h (3G)