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BLU D440
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
Top 86%767 points
Top 86%
Top 67%1,842 points
Top 67%
Top 24%4,257 points
Top 24%
Top 6%5,278 points
Top 6%
BLU D440
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
Top specs and features

BLU D440 vs Cat S30 vs Samsung Galaxy S7 edge (Exynos 8890 Octa) vs Samsung Galaxy S9 (Qualcomm Snapdragon 845): 138 facts in comparison

1. battery power

1800mAh
Energizer Power Max P16K Pro: 16000mAh
3000mAh
3600mAh
3000mAh

2. total clock speed

4 x 1.5GHz
Meizu Pro 7 Plus 64GB: 10 x 2.6GHz
4 x 1.1GHz
8 x 2.6GHz
4 x 2.8GHz & 4 x 1.77GHz(Qualcomm Snapdragon 845)

3. pixel density

245ppi
Sony Xperia H8541: 847ppi
218ppi
534ppi
570ppi

4. screen size

The bigger the screen size is, the better the user experience.
4.5"
Huawei Honor 8X Max: 7.12"
4.5"
5.5"
5.8"

5. RAM

1GB
Asus ROG Phone 128GB: 8GB
1GB
4GB
4GB

6. megapixels

5MP
Huawei Mate RS Porsche Design: 40 & 20 & 8MP
5MP
12MP
12MP

7. resolution

540 x 960px
Sony Xperia H8541: 2160 x 4320px
480 x 854px
1440 x 2560px
1440 x 2960px

8. front camera megapixels

1.3MP
Wiko View2 Pro: 16 & 16MP
2MP
5MP
8MP

9. 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
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
86% have it

10. 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
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
40% have it

11. weight

145g
Starmobile Uno B208: 68g
181g
157g
163g

12. 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
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
78% have it

13. internal storage

4GB
Smartisan Nut R1: 1024GB
8GB
64GB
64GB

14. thickness

10.8mm
Asus Zenfone AR 64GB: 4.6mm
13.25mm
7.7mm
8.5mm

15. Is dustproof and water resistant

Dustproof/water resistant at depth equal to or greater than 1 meter.
BLU D440
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
9% have it

16. has stereo speakers

Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
BLU D440
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
19% have it

17. has a removable battery

The battery is removable and can be replaced by the user if broken.
BLU D440
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
37% have it

18. has built-in optical image stabilization

Optical image stabilization uses gyroscopic sensors to detect the vibrations of the camera. The lens adjusts the optical path accordingly, ensuring that any type of motion blur is corrected before the sensor captures the image.
BLU D440
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
14% have it

19. download speed

21MBits/s
Asus ROG Phone 128GB: 1200MBits/s
150MBits/s
450MBits/s
1200MBits/s

20. has a radio

It works as an FM radio with included headsets
BLU D440
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
69% have it

21. 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
Asus ROG Phone 128GB: 2160 x 60fps
1080 x 60fps
2160 x 30fps
2160 x 60fps

22. 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
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
7% have it

23. Is DLNA certified

All DLNA certified products are compatible with one another. When different devices are connected to the same network, data can be transferred easily between them.
BLU D440
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
30% have it

24. has NFC

NFC (near field communication) allows a device to perform simple wireless transactions.
BLU D440
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
38% have it

25. has an IPS screen

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.
BLU D440
Cat S30
Samsung Galaxy S7 edge (Exynos 8890 Octa)
Samsung Galaxy S9 (Qualcomm Snapdragon 845)
56% have it

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