vs
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
Top 69%1,721 points
Top 69%
Top 66%1,881 points
Top 66%
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
Top specs and features

Microsoft Lumia 640 Dual SIM vs Nokia Lumia 820: 84 facts in comparison

1. battery power

1.52x more battery power.
2500mAh
Energizer Power Max P16K Pro: 16000mAh
1650mAh

2. total clock speed

1.6x faster CPU clock speed.
4 x 1.2GHz(Qualcomm Snapdragon 400)
Meizu Pro 7 Plus 64GB: 10 x 2.6GHz
2 x 1.5GHz

3. pixel density

35.48% higher pixel density.
294ppi
Sony Xperia H8541: 847ppi
217ppi

4. screen size

The bigger the screen size is, the better the user experience.
5"
Huawei Honor 8X Max: 7.12"
4.3"

5. RAM

0MB more RAM memory.
1GB
Xiaomi Mi 8 Pro: 8GB
1GB

6. megapixels

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

7. resolution

2.4x higher resolution.
720 x 1280px
Sony Xperia H8541: 2160 x 4320px
480 x 800px

8. front camera megapixels

3.33x more megapixels (front camera).
1MP
Wiko View2 Pro: 16 & 16MP
0.3MP

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.
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
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.
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
40% have it

11. weight

15g lighter.
145g
Starmobile Uno B208: 68g
160g

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.
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
78% have it

13. internal storage

0MB more internal storage.
8GB
Smartisan Nut R1: 1024GB
8GB

14. thickness

1.1mm thinner.
8.8mm
Asus Zenfone AR 64GB: 4.6mm
9.9mm

15. has a removable battery

The battery is removable and can be replaced by the user if broken.
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
37% have it

16. has a radio

It works as an FM radio with included headsets
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
69% have it

17. 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
Apple iPhone XS Max 64GB: 2160 x 60fps
1080 x 30fps

18. wireless charging

The manufacturer offers a branded wireless charging kit. To charge the device, you simply put it down on its charging base.
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
7% have it

19. 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.
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
30% have it

20. has NFC

NFC (near field communication) allows a device to perform simple wireless transactions.
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
38% have it

21. 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.
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
56% have it

22. width

3.7mm narrower.
72.2mm
Samsung Galaxy Note 9 (Qualcomm Snapdragon 845) 128GB: 8.8mm
68.5mm

23. 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.
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
27% have it

24. has a dedicated camera button

A dedicated camera button allows you to take snapshots more easily.
Microsoft Lumia 640 Dual SIM
Nokia Lumia 820
7% have it

25. height

17.5mm shorter.
141.3mm
Motorola FlipOut: 67mm
123.8mm

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