Phone Comparison - Nokia Lumia 520 vs Nokia Lumia 1020 vs Nokia Lumia 635

general General Info

Manufacturer Nokia Nokia Nokia
Announced February 2013 July 2013 April 2014
Status Available - April 2013 Available - July 2013 Available - May 2014
Colors Yellow, red, cyan, white/black Black, White, Yellow Orange, Yellow, White, Black
Form Factor Candybar Candybar Candybar
Dimension 119.9 x 64 x 9.9 mm
(4.72 x 2.52 x 0.39 in)
130.4 x 71.4 x 10.4 mm
(5.13 x 2.81 x 0.41 in)
129.5 x 66.7 x 9.2 mm
(5.1 x 2.63 x 0.36 in)
Weight 124 g (4.37 oz) 158 g (5.57 oz) 134 g (4.73 oz)
2G Network GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 900 / 2100
HSDPA 850 / 1900 / 2100
HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G Network - LTE 800 / 900 / 1800 / 2100 / 2600 LTE
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 Microsoft Windows Phone 8.1
Processor Dual-core 1 GHz, Qualcomm MSM8227 Snapdragon S4 Dual-core 1.5 GHz Krait, Qualcomm MSM8960 Snapdragon Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400
GPU Adreno 305 Adreno 225 Adreno 305
RAM 512 MB 2 GB 512 MB
Internal Memory 8 GB storage 32 GB 8 GB
External Memory microSD, up to 64 GB No microSD, up to 64 GB

display Display

Type IPS LCD capacitive touchscreen AMOLED capacitive touchscreen, PureMotion HD+ ClearBlack Display, Gorilla Glass 3 IPS LCD capacitive touchscreen
Colors 16M colors 16M colors 16M colors
Size 4.0 inches 4.5 inches 4.5 inches
Resolution 480 x 800 pixels (233 ppi) 768 x 1280 pixels (332 ppi) 480 x 854 pixels (218 ppi)
Screen-to-Body Ratio 59.47% 61.80% 64.43%
Multi-Touch yes yes yes

multimedia Multimedia

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

camera Camera

Rear Camera 5 MP, 2592х1944 pixels 41 MP (38 MP effective, 7152 x 5368 pixels) 5 MP, 2592 х 1944 pixels
Flash No Xenon Flash No
Features Auto focus, Geo-tagging Carl Zeiss optics, Auto Focus, 1/1.2' Sensor Size, ND Filter, Optical Zoom, Geo-tagging, Face Detection, Optical Zoom, Panorama Geo-tagging
Video Yes, 720p@30fps Yes, 1080p@30fps Yes, 720p@30fps
Front Camera No [Similar] Yes, 1.2 MP, 720p [Similar] No [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Up to 107 kbps Yes
Edge Yes Up to 236.8 kbps Yes
3G HSDPA, 21 Mbps; HSUPA, 5.76 Mbps HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE, Cat3, 50 Mbps UL, 100 Mbps DL
Bluetooth Yes, v4.0 with A2DP Yes, v3.0 with A2DP Yes, v4.0 with A2DP
Wi-Fi Wi-Fi 802.11 b/g/n Wi-Fi 802.11 b/g/n, DLNA, UPnP technology Wi-Fi 802.11 b/g/n
USB Yes, microUSB v2.0 Yes, microUSB v2.0, USB On-the-go Yes, microUSB v2.0
GPS Yes, with A-GPS support and GLONASS Yes, with A-GPS support Yes, with A-GPS support and GLONASS
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 8 GB storage, 512 MB RAM 32 GB, 2 GB RAM 8 GB, 512 MB RAM
Expandable Storage microSD, up to 64 GB No microSD, up to 64 GB
USB OTG - Supported -

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 not supported NFC supported NFC not supported

battery Battery

Type Li-Ion Battery Non-removable Li-Ion Battery, Wireless Charging Supported via Cover Li-Ion Battery
Capacity 1430 mAh 2000 mAh 1830 mAh
Stand by Up to 384 h (3G)
Up to 360 h (3G)
Up to 384 h Up to 648 h
Talk Time Up to 17 h 24 min (2G)
Up to 9 h 42 min (3G)
Up to 19 h 6 min (2G)
Up to 13 h 18 min (3G)
Up to 12 h (2G)
Up to 14 h (3G)