Nokia Lumia 820 vs LG Optimus L7 P700 vs Nokia Lumia 925

General Info

Manufacturer
Nokia	LG	Nokia
Announced
Expected September 2012	February 2012	May 2013
Status
Available - November 2012	Released - May 2012	Available - June 2013
Colors
Black, Gray, Red, Yellow, White, Blue, Violet	Black, White	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)	125.5 x 67 x 8.7 mm (4.94 x 2.64 x 0.34 in)	129 x 70.6 x 8.5 mm (5.08 x 2.78 x 0.33 in)
Weight
160 g (5.64 oz)	122 g (4.3 oz)	139 g (4.9 oz)
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 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100 - RM-892, RM-893 HSDPA 850 / 900 / 1700 / 1900 / 2100 - RM-910
4G Network
LTE 800 / 1800 / 2600 / 2100/ 900	-	LTE 800 / 900 / 1800 / 2100 / 2600 - RM-892 LTE 700 / 1700 / 2100 - RM-893
Messaging
SMS, MMS, Push Mail, EMail, IM	SMS, MMS, Push Mail, EMail, IM	SMS, MMS, Push Mail, EMail, IM

OS
Microsoft Windows Phone 8	Android OS, v4.0.3 (Ice Cream Sandwich), upgradeable to 4.1.2 (Jelly Bean)	Microsoft Windows Phone 8
Processor
Dual-core 1.5 GHz Krait, Qualcomm MSM8960 Snapdragon	1 GHz Cortex-A5, Qualcomm MSM7227A Snapdragon	Dual-core 1.5 GHz Krait, Qualcomm MSM8960 Snapdragon
GPU
Adreno 225	Adreno 200	Adreno 225
RAM
1 GB	512 MB	1 GB
Internal Memory
8 GB storage	4 GB storage (2.4 GB user available)	16/32 GB storage
External Memory
microSD, up to 32 GB	microSD, up to 32 GB	No

Type
AMOLED capacitive touchscreen	IPS LCD, capacitive touchscreen	AMOLED capacitive touchscreen
Colors
16M colors	16M colors	16M colors
Size
4.3 inches	4.3 inches	4.5 inches
Resolution
480 x 800 pixels (217 ppi)	480 x 800 pixels (217 ppi)	768 x 1280 pixels (332 ppi)
Screen-to-Body Ratio
62.04%	62.57%	63.18%
Multi-Touch

Rear Camera
8 MP, 3264x2448 pixels, Carl Zeiss Tessa	5 MP, 2592 x 1944 pixels	8.7 MP, 3264 x 2448 pixels
Flash
LED flash	LED flash	Dual-LED flash
Features
Auto focus, Geo-tagging	Auto focus, Geo-tagging, Touch Focus	PureView Technology, Geo-tagging, Touch Focus, Optical image stabilization, Still image editor, Face recognition
Video
Yes	Yes, VGA@30fps	Yes, 1080p@30fps, video stabilization
Front Camera
Yes	Yes	Yes, 1.2 MP wide Angle, 720p@30fps

GPRS
Yes	Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps	Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps
Edge
Yes	Class 12	Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps
3G
HSDPA, 42 Mbps HSUPA, 5.76 Mbps LTE, Cat3, 50 Mbps UL, 100 Mbps DL	HSDPA, 21 Mbps; HSUPA, 5.76 Mbps	HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL
Bluetooth
Yes, v3.1 with A2DP, EDR	Yes, v3.0 with A2DP	Yes, v4.0 with A2DP, EDR
Wi-Fi
Wi-Fi 802.11 b/g/n	Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot, DLNA	Wi-Fi 802.11 a/b/g/n, dual-band, DLNA, Wi-Fi hotspot
USB
Yes, microUSB v2.0	Yes, microUSB v2.0	Yes, microUSB v2.0
GPS
Yes, with A-GPS support	Yes, with A-GPS support	Yes, with A-GPS support and GLONASS
Browser
HTML5	HTML, Adobe Flash Lite	HTML5

Internal
8 GB storage, 1 GB RAM	4 GB storage (2.4 GB user available), 512 MB RAM	16/32 GB storage, 1 GB RAM
Expandable Storage
microSD, up to 32 GB	microSD, up to 32 GB	No

Type
Standard battery, Li-Ion	Li-Ion battery	Non-removable Li-Ion Battery (BL-4YW)
Capacity
1650 mAh	1700 mAh	2000 mAh
Stand by
Up to 330 h (2G) Up to 330 h (3G)	Up to 550 h	Up to 440 h (3G)
Talk Time
Up to 14 h (2G) Up to 8 h (3G)	Up to 6 h	Up to 18 h 18 min (2G) Up to 12 h 48 min (3G)