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BLU D440
Nokia Lumia 521
Top 87%745 points
Top 87%
Top 80%1,129 points
Top 80%
BLU D440
Nokia Lumia 521
Top specs and features

BLU D440 vs Nokia Lumia 521: 71 facts in comparison

1. battery power

25.87% more battery power.
1800mAh
Energizer Power Max P16K Pro: 16000mAh
1430mAh

2. total clock speed

3x faster CPU clock speed.
4 x 1.5GHz
Meizu Pro 7 Plus 64GB: 10 x 2.6GHz
2 x 1GHz

3. pixel density

5.15% higher pixel density.
245ppi
Sony Xperia H8541: 847ppi
233ppi

4. screen size

The bigger the screen size is, the better the user experience.
4.5"
Samsung Galaxy J Max: 7"
4"

5. RAM

0.5GB more RAM memory.
1GB
Oppo Find X: 8GB
0.5GB

6. megapixels

0% more megapixels (main camera).
5MP
Huawei Mate RS Porsche Design: 40 & 20 & 8MP
5MP

7. resolution

35% higher resolution.
540 x 960px
Sony Xperia H8541: 2160 x 4320px
480 x 800px

8. has an external memory slot

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.
BLU D440
Nokia Lumia 521
85% have it

9. has branded damage resistant glass

Damage resistant glass (such as Corning Gorilla Glass or Asahi Dragontrail Glass) is thin, lightweight, and can withstand high levels of force.
BLU D440
Nokia Lumia 521
41% have it

10. weight

21g lighter.
145g
Starmobile Uno B208: 68g
124g

11. every pixel has three subpixels

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.
BLU D440
Nokia Lumia 521
78% have it

12. thickness

0.9mm thinner.
10.8mm
Asus Zenfone AR 64GB: 4.6mm
9.9mm

13. internal storage

4GB more internal storage.
4GB
Smartisan Nut R1: 1024GB
8GB

14. has a removable battery

The battery is removable and can be replaced by the user if broken.
BLU D440
Nokia Lumia 521
39% have it

15. has USB mass storage support

It can transfer files, music, photos via USB, no need to install additional software.
BLU D440
Nokia Lumia 521
87% have it

16. download speed

0.48% faster downloads.
21MBits/s
HTC U12+ 128GB: 1200MBits/s
21.1MBits/s

17. has a radio

It works as an FM radio with included headsets
BLU D440
Nokia Lumia 521
68% have it

18. wireless charging

The manufacturer offers a branded wireless charging kit. To charge the device, you simply put it down on its charging base.
BLU D440
Nokia Lumia 521
7% have it

19. video recording (main camera)

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.
1080 x 30fps
Xiaomi Mi 8 64GB: 2160 x 60fps
720 x 30fps

20. has NFC

NFC (near field communication) allows a device to perform simple wireless transactions.
BLU D440
Nokia Lumia 521
39% have it

21. width

3mm narrower.
67mm
Vertu Signature for Bentley: 42mm
64mm

22. Has a dual-tone LED flash

A dual-tone flash has LED lights with different color temperatures, delivering a better color balance to photos and videos.
BLU D440
Nokia Lumia 521
26% have it

23. height

9mm shorter.
133mm
Motorola FlipOut: 67mm
124mm

24. Bluetooth version

1 newer Bluetooth version.
4
Samsung Galaxy S8 Active: 5.1
3

25. The browser has word wrap

The web browser has automatic word wrap when zooming, the user can easily read long lines without scrolling horizontally.
BLU D440(Android 4.0–4.0.2 Ice Cream Sandwich (API level 14))
Nokia Lumia 521(Windows Phone 8)
85% have it

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