22points

Nokia Lumia 521

27points

Nokia Lumia 635

Nokia Lumia 521
Comparison winner
Nokia Lumia 635
vs
vs

75 facts in comparison

Nokia Lumia 521 vs Nokia Lumia 635

Nokia Lumia 521
Nokia Lumia 635
Nokia Lumia 521
Nokia Lumia 635

Why is Nokia Lumia 521 better than Nokia Lumia 635?

  • 10g lighter
    124gvs134g
  • Has a removable battery
  • 2.7mm narrower
    64mmvs66.7mm
  • 5.5mm shorter
    124mmvs129.5mm
  • Has a serial shot mode
  • 4.74% less body volume
    78.57cm³vs79.46637999999999cm³

Why is Nokia Lumia 635 better than Nokia Lumia 521?

  • 27.97% more battery power
    1830mAhvs1430mAh
  • 2.4x faster CPU speed
    4 x 1.2GHzvs2 x 1GHz
  • 12.5% bigger screen size
    4.5"vs4"
  • 6.75% higher resolution
    480 x 854pxvs480 x 800px
  • Has branded damage resistant glass
  • 0.7mm thinner
    9.2mmvs9.9mm
  • 4.74x faster downloads
    100MBits/svs21.1MBits/s
  • Has a radio

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Top specs and features

relevant

Design

1.weight

124g

134g

Best

Palm Phone

62.5g

2.thickness

9.9mm

9.2mm

Best

Asus Zenfone AR 64GB

4.6mm

3.width

64mm

66.7mm

Best

Vertu Signature for Bentley

42mm

4.height

124mm

129.5mm

Best

Motorola FlipOut

67mm

5.volume

78.57cm³

79.47cm³

Best

Palm Phone

36.17cm³

6.has a QWERTY keyboard
Nokia Lumia 521
Nokia Lumia 635

Text messaging is much faster due to a hardware keyboard.

For example

Sharp Aquos R2 Compact

relevant

Display

1.resolution

480 x 800px

480 x 854px

Best

Sony Xperia H8541

2160 x 4320px

2.has branded damage resistant glass
Nokia Lumia 521
Nokia Lumia 635

Damage resistant glass (such as Corning Gorilla Glass or Asahi Dragontrail Glass) is thin, lightweight, and can withstand high levels of force.

3.pixel density

233ppi

221ppi

Best

Sony Xperia H8541

847ppi

4.screen size

4"

4.5"

The bigger the screen size is, the better the user experience.

Best

Huawei Mate 20 X

7.2"

5.every pixel has three subpixels
Nokia Lumia 521
Nokia Lumia 635

The device has a display with three full subpixels per pixel, resulting in a sharp and crisp picture. Pixels in some displays (like AMOLED) share one subpixel to preserve space. This can result in a less crisp, slightly blurred image.

6.has an IPS screen
Nokia Lumia 521
Nokia Lumia 635

IPS (In-Plane Switching) is a technology used for LCDs. It was designed to overcome the main limitations of normal TFTs TN-matrices: relatively slow response times, small viewing angles and low quality color reproduction.

relevant

Performance

1.RAM

0.5GB

0.5GB

Best

Vivo NEX 2

10GB

2.CPU speed

2 x 1GHz

4 x 1.2GHz

Best

Meizu Pro 7 Plus 64GB

10 x 2.6GHz

3.has an external memory slot
Nokia Lumia 521
Nokia Lumia 635

The device has a standard memory slot (such as an SD or micro SD card slot) so that you can either extend the internal storage with affordable memory modules or you can retrieve data, such as photographs, easily from a memory card.

4.internal storage

8GB

8GB

Best

Smartisan Nut R1

1024GB

5.semiconductor size

28nm

28nm

A smaller size indicates that the process to create the chip is newer.

Best

Huawei Mate 20 X

7nm

relevant

Cameras

1.megapixels

5MP

5MP

Best

Huawei Mate 20 X

40 & 20 & 8MP

2.video recording (main camera)

720 x 30fps

720 x 30fps

The maximum resolution available for videos shot with the main camera. Although it may be possible to choose among other frame rates, those recordings usually have lower resolutions.

Best

Crosscall Trekker-X4

1080 x 120fps

3.widest aperture

f/2.4

f/2.4

With a wider aperture the sensor can capture more light, helping to avoid blur by enabling a faster shutter speed. It also provides a shallow depth of field, allowing you to blur the background to focus attention on the subject.

Best

Vivo NEX 2

1.3 & 1.8 & 1.8f

4.has a flash
Nokia Lumia 521
Nokia Lumia 635

A flash is good for low-light environments, and can sometimes be used as flashlight.

For example

Vivo NEX 2

5.has a front camera
Nokia Lumia 521
Nokia Lumia 635

A front camera, also called secondary camera, can be used for video chats/selfies.

For example

ZTE Nubia Red Magic Mars (64GB / 6GB RAM)

6.has continuous autofocus when recording movies
Nokia Lumia 521
Nokia Lumia 635

When recording movies they stay focussed and sharp.

relevant

Audio

1.has a socket for a 3.5 mm audio jack
Nokia Lumia 521
Nokia Lumia 635

With a standard mini jack socket, you can use the device with most headphones.

2.number of microphones

2

2

More microphones result in better sound quality and enable the device to filter out background noise.

Best

Motorola Moto Z3

4

3.has a radio
Nokia Lumia 521
Nokia Lumia 635

It works as an FM radio with included headsets

4.has dedicated media keys
Nokia Lumia 521
Nokia Lumia 635

The music player can be blindly used.

For example

ZTE Nubia X

relevant

Battery

1.battery power

1430mAh

1830mAh

Best

Energizer Power Max P16K Pro

16000mAh

2.wireless charging
Nokia Lumia 521
Nokia Lumia 635

The manufacturer offers a branded wireless charging kit. To charge the device, you simply put it down on its charging base.

For example

Kyocera DuraForce Pro 2

3.has a removable battery
Nokia Lumia 521
Nokia Lumia 635

The battery is removable and can be replaced by the user if broken.

4.has a battery level indicator
Nokia Lumia 521
Nokia Lumia 635

An indicator shows you when the device has low battery.

5.has a rechargeable battery
Nokia Lumia 521
Nokia Lumia 635

The battery can be recharged and used over again.

relevant

Features

1.Is a multi-user system
Nokia Lumia 521
Nokia Lumia 635
2.Has offline voice recognition
Nokia Lumia 521
Nokia Lumia 635

Offline voice recognition enables you to perform voice actions, like dictating texts or using various voice commands, without an internet connection.

3.Allows app installs on the device's external storage
Nokia Lumia 521
Nokia Lumia 635
4.Has fast 802.11ac WiFi connection
Nokia Lumia 521
Nokia Lumia 635

802.11ac wireless works on the 5GHz frequency range. It offers higher transfer rates, improved reliability and improved power consumption. It provides advantages for gaming and HD video streaming.

For example

Vivo NEX 2

5.download speed

21.1MBits/s

100MBits/s

Best

ZTE Nubia Red Magic Mars (64GB / 6GB RAM)

1200MBits/s

6.has GPS
Nokia Lumia 521
Nokia Lumia 635

GPS enables global positioning, useful in map, geo-tagging or navigation apps.

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