Compare Nokia Lumia 521 vs Nokia Lumia 635

Summary
55%
Display

4" (Small)

800x480, Avg sharpness

4.5" (Medium)

480x854, Avg sharpness

Performance

Dual core

1 GHz, 512 MB RAM

Quad core

1.2 GHz, 512 MB RAM

Storage

8 GB

64 GB (Expandable)

8 GB

128 GB (Expandable)

Camera

5 MP (Main)

5 MP (Main)

Battery

1430 mAh

9 h talktime (3G)

1830 mAh

14 h talktime (3G)

Expert Rating
User Rating
General
Operating System

Windows Phone v8

Windows Phone v8.1

SIM Slot(s)

Single SIM, GSM

Single SIM, GSM

SIM Size

SIM1: Micro

SIM1: Micro

Network

3G: Yes, 2G: Yes

4G: Yes (doesn't support Indian bands)
3G: Yes, 2G: Yes

Design
Size Compare
Size Compare
Dimensions

Height: 124 mm
Width: 64 mm
Thickness: 9.9 mm

Height: 129.5 mm
Width: 66.7 mm
Thickness: 9.2 mm

Weight

124.5 grams

134 grams

Colours

Display
Good
Screen Resolution

800 x 480 pixels

480 x 854 pixels

Pixel Density

233 ppi

218 ppi

Display Type

IPS LCD

IPS LCD

Touch Screen

Multi-touch

Capacitive Touchscreen, Multi-touch

Performance
Below Average
Chipset

Qualcomm Snapdragon 400

Processor

Dual core, 1 GHz, Qualcomm Snapdragon S4

Quad core, 1.2 GHz, Cortex A7

Graphics

Adreno 305

RAM

512 MB

512 MB

Storage
Very Good
Internal Memory

8 GB

8 GB

Expandable Memory

Up to 64 GB

Up to 128 GB

Camera
Average
Main Camera
Resolution

5 MP Primary Camera

5 MP Primary Camera

Flash

No

Image Resolution

2592 x 1936 Pixels

2592 x 1944 Pixels

Settings

Exposure compensation

Camera Features

4 x Digital Zoom, Touch to focus

4 x Digital Zoom, Touch to focus

Video Recording

1280x720 @ 30 fps

1280x720 @ 30 fps

Battery
Average
Capacity

1430 mAh

1830 mAh

Type

Li-ion

Li-ion

Standby Time

Up to 400 Hours(3G)

Up to 27 Day(2G)

Network & Connectivity
SIM Size

SIM1: Micro

SIM1: Micro

SIM 1

3G, 2G

4G (doesn't support Indian bands), 3G, 2G

Bluetooth

v3.0

v4.0

GPS

with A-GPS, Glonass

with A-GPS, Glonass

USB Connectivity

USB 2.0, microUSB

microUSB 2.0

Multimedia
FM Radio

Loudspeaker

Audio Jack

3.5 mm

3.5 mm

Audio Features

Dolby Digital

Special Features
Other Sensors

Light sensor, Proximity sensor, Accelerometer

Proximity sensor, Accelerometer, Compass