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Which should you buy, the Ulefone Armor X3 32GB or Zenfone 4 Pro ZS551KL 128GB? We offer a thorough comparison of the differences in functions, specifications and performance between the two

Created date: 2020-01-07 21:01:39, Updated date: 2022-06-01 22:06:13

Ulefone Armor X3 32GBZenfone 4 Pro ZS551KL 128GB
Ulefone Armor X3 32GBZenfone 4 Pro ZS551KL 128GB

Here's our thorough comparison of the difference in performance and function between the "Ulefone Armor X3 32GB" and "Zenfone 4 Pro ZS551KL 128GB". Which one should you buy? We'll compare and explain what differs between the "Ulefone Armor X3 32GB" and "Zenfone 4 Pro ZS551KL 128GB" in a way that even people who aren't used to choosing between two similar products can understand.

Ulefone Armor X3 32GBZenfone 4 Pro ZS551KL 128GB
Ulefone Armor X3 32GB

Zenfone 4 Pro ZS551KL 128GB

General rating:

50.7/100

(The 3881th of all smartphones)

73.7/100

(The 19th of all smartphones)

Portability
49/100
62/100
Weight
44/100
60/100
Size of screen
82/100
82/100
Screen clarity
59/100
85/100
Battery duration
83/100
74/100
Processing capability
36/100
91/100
Memory capacity
50/100
90/100
Storage capacity
55/100
90/100
Rear camera function
50/100
68/100
Front camera function
50/100
58/100

Compare Performance and Usability

Size comparison of "Ulefone Armor X3 32GB" and "Zenfone 4 Pro ZS551KL 128GB". Which one would you choose?

Your device's size has a huge influence on how easy it is to hold or to operate with one hand. The smaller your device's width, the easier it will be to hold, but you'll also need to take device thickness into account. And when the length and width are both smaller, you'll find that it's much easier for you to operate it one-handed, since your fingers will find it much easier to reach where you want them to. On the other hand, longer lengths and wider widths might lead to devices that are hard to carry in your pocket, bulky even when you keep them in your bag, and all around less portable.

The "Ulefone Armor X3 32GB" is 77.5mm wide, 158.0mm tall, and 13.9mm thick. The "Zenfone 4 Pro ZS551KL 128GB" is 75.6mm tall, 156.9mm wide, and 7.6mm thick.

The "Zenfone 4 Pro ZS551KL 128GB" is also more compact than the "Ulefone Armor X3 32GB" in terms of the thickness of the devices. The "Zenfone 4 Pro ZS551KL 128GB" is easier than the "Ulefone Armor X3 32GB" to hold with one hand, and you are less likely to accidentally drop it. If you're looking for a smartphone that fits nicely in your hand and can be gripped firmly, we recommend buying the "Zenfone 4 Pro ZS551KL 128GB" rather than the "Ulefone Armor X3 32GB".

There is no real difference in length or width between the "Ulefone Armor X3 32GB" and "Zenfone 4 Pro ZS551KL 128GB", so they are both about the same in terms of usability, ease of carry, and bulkiness. Because of this, it is better to compare them based on other aspects of performance and function.

Comparing the overall size of the main unit, the "Zenfone 4 Pro ZS551KL 128GB" is smaller than the "Ulefone Armor X3 32GB". As a result, it is easier to use the "Zenfone 4 Pro ZS551KL 128GB" with one hand compared to the "Ulefone Armor X3 32GB", and its size makes it more comfortable to carry around. For this reason, the "Zenfone 4 Pro ZS551KL 128GB" is recommended.

ScoreDimensions (width x height x thickness)
Ulefone Armor X3 32GB49/10077.5mm x 158.0mm x 13.9mm
Zenfone 4 Pro ZS551KL 128GB62/10075.6mm x 156.9mm x 7.6mm

Which one is easier to hold, "Ulefone Armor X3 32GB" or "Zenfone 4 Pro ZS551KL 128GB"? Compare weight

The device weight will effect how quickly you tire from holding it, and how much stress is put on your wrist. The lighter it is, the longer you can hold it without feeling tired. Also, less stress on your wrist will make using it easier and more pleasant. Unless the weight is right for you, it might put too much strain on your body and make using it more stressful.

The "Ulefone Armor X3 32GB" weighs 235.0g. The "Zenfone 4 Pro ZS551KL 128GB" clocks in at 175.0g. If you compare the weight of the two, the "Zenfone 4 Pro ZS551KL 128GB" is a considerably lighter smartphone than the "Ulefone Armor X3 32GB", with a difference of about 60g. Because of this, the "Zenfone 4 Pro ZS551KL 128GB" puts less of a burden on the fingers and wrists than the "Ulefone Armor X3 32GB". If you want a smartphone that won't tire your hands out even when using it for a long time, we recommend that you buy the "Zenfone 4 Pro ZS551KL 128GB" rather than the "Ulefone Armor X3 32GB".

ScoreWeight
Ulefone Armor X3 32GB44/100235.0g
Zenfone 4 Pro ZS551KL 128GB60/100175.0g

Which is better in terms of display, "Ulefone Armor X3 32GB" or "Zenfone 4 Pro ZS551KL 128GB"?

Screen size influences how well you can control your device, as well as how clear the display is. With a large screen, the text and buttons in apps will display large enough so you'll be less likely to accidentally tap the button next to the one you were aiming for. Plus, you'll be able to enjoy more high-impact visuals for games and movies.

The screen size on the "Ulefone Armor X3 32GB" is 5.5inch, and 5.5inch on the "Zenfone 4 Pro ZS551KL 128GB". The screens of the "Ulefone Armor X3 32GB" and "Zenfone 4 Pro ZS551KL 128GB" are roughly the same size, and so the ease of pressing app buttons are the same on both devices. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreDisplay size
Ulefone Armor X3 32GB82/1005.5inch
Zenfone 4 Pro ZS551KL 128GB82/1005.5inch

Which one has a better display, "Ulefone Armor X3 32GB" or "Zenfone 4 Pro ZS551KL 128GB"?

Pixel density influences how nice your device's screen looks, with high pixel densities making screens look more beautiful, and letting you get more out of your games and movies. Plus, the nicer you screen looks, the less strain you'll be putting on your eyes, so you'll tend to be able to use your device for longer before your eyes get tired.

The screen on the "Ulefone Armor X3 32GB" has a 720 x 1440 resolution and a pixel density of 292ppi. The "Zenfone 4 Pro ZS551KL 128GB", on the other hand, has a screen resolution of 1080 x 1920 and a pixel density of 400ppi. Comparing the screen definition, the "Zenfone 4 Pro ZS551KL 128GB" has a much higher pixel density than the "Ulefone Armor X3 32GB", with a difference of about 108ppi. The screen on the "Zenfone 4 Pro ZS551KL 128GB" is clear and crisp, and puts less strain on the eyes than that of the "Ulefone Armor X3 32GB". If you want to choose a smartphone that is gentle on your eyes with a display that shows text and images clearly, we recommend that you buy the "Zenfone 4 Pro ZS551KL 128GB" rather than the "Ulefone Armor X3 32GB".

ScorePixel density
Ulefone Armor X3 32GB59/100292ppi
Zenfone 4 Pro ZS551KL 128GB85/100400ppi

How is the battery duration of "Ulefone Armor X3 32GB" different from that of "Zenfone 4 Pro ZS551KL 128GB" ? See the differences

Battery performance has a big effect on the battery life of your device. However, a high battery capacity doesn't necessarily mean a long battery life. Rather, the rate of power consumption needs to be taken into consideration as well. The larger the screen and the higher the CPU performance, the higher the rate of power consumption on your battery.

The "Ulefone Armor X3 32GB" has a battery capacity of 5000.0mAh, while the "Zenfone 4 Pro ZS551KL 128GB" has a 3600.0mAh battery. Regarding the battery performance, the "Ulefone Armor X3 32GB" has a larger battery capacity than the "Zenfone 4 Pro ZS551KL 128GB", with a difference of 1400mAh. If you are choosing based on the battery, the "Ulefone Armor X3 32GB" is recommended over the "Zenfone 4 Pro ZS551KL 128GB".

ScoreBattery capacity
Ulefone Armor X3 32GB83/1005000.0mAh
Zenfone 4 Pro ZS551KL 128GB74/1003600.0mAh

Which is better in terms of CPU function, "Ulefone Armor X3 32GB" or "Zenfone 4 Pro ZS551KL 128GB"?

Your CPU's speed will influence the processing power of the applications you run, and together with the number of cores in the CPU, as well as its clock frequency, will determine the processing power available for apps. The higher these performance factors, the smoother your games and apps will run. Conversely, if these factors are too low, your apps and games will be sluggish and struggle to run.

The "Ulefone Armor X3 32GB" is equipped with a Mediatek MT6580 processor, and its performance speed is 1.3GHz×4(4.0-cores). The "Zenfone 4 Pro ZS551KL 128GB" uses an Qualcomm MSM8998 Snapdragon 835 CPU that performs at a speed of 2.45GHz+1.9GHz×8(8.0-cores). Comparing CPU performance, the "Zenfone 4 Pro ZS551KL 128GB" has significantly higher specs than the "Ulefone Armor X3 32GB". The "Zenfone 4 Pro ZS551KL 128GB" proves to be more advanced than the "Ulefone Armor X3 32GB" in the way that apps run quickly and games play smoothly. If you're looking for a high-spec smartphone that runs quickly and plays games smoothly, we recommend that you buy the "Zenfone 4 Pro ZS551KL 128GB" rather than the "Ulefone Armor X3 32GB".

ScoreCPU specs
Ulefone Armor X3 32GB36/1001.3GHz×4(4.0-cores)
Zenfone 4 Pro ZS551KL 128GB91/1002.45GHz+1.9GHz×8(8.0-cores)

How is "Ulefone Armor X3 32GB" different from "Zenfone 4 Pro ZS551KL 128GB" in terms of memory capacity?

Your device's multimedia performance and app stability are both influenced by the amount of memory it has available. The more memory, the more apps you can use simultaneously, while keeping everything stable and smooth. Plus, there'll be less chance of animations lagging or apps crashing. You also need to keep in mind that some games won't run at all if there's not enough memory available.

The "Ulefone Armor X3 32GB" has 2.0GB of memory. The "Zenfone 4 Pro ZS551KL 128GB", on the other hand, has 6.0GB. As for memory performance, the "Zenfone 4 Pro ZS551KL 128GB" has a larger memory capacity than the "Ulefone Armor X3 32GB", with a difference of about 4GB. The "Zenfone 4 Pro ZS551KL 128GB" has better multitasking, less crashing, and runs 3D games and VR video better than the "Ulefone Armor X3 32GB". If you're looking for a smartphone that will remain stable even when you are using multiple apps at the same time, and which will allow you to play 3D games and VR video comfortably, we recommend that you buy the "Zenfone 4 Pro ZS551KL 128GB" rather than the "Ulefone Armor X3 32GB".

ScoreRAM size
Ulefone Armor X3 32GB50/1002.0GB
Zenfone 4 Pro ZS551KL 128GB90/1006.0GB

Which has a better storage capacity, "Ulefone Armor X3 32GB" or "Zenfone 4 Pro ZS551KL 128GB"?

Storage capacity determines the amount of data you'll be able to save on your device. The more storage you have, the more photos you can take and the more apps you can install. Plus, if your smartphone is compatible with SD cards, then you can increase the amount of available storage. However, SD cards have a slower writespeed, making them less desirable in terms of performance, and users should be aware that it won't be possible to transfer all kinds of data to the card.

The "Ulefone Armor X3 32GB" has 32.0GB of storage, while the "Zenfone 4 Pro ZS551KL 128GB" has 128.0GB. In terms of ROM and data storage, the "Zenfone 4 Pro ZS551KL 128GB" has a much larger capacity than the "Ulefone Armor X3 32GB", with a difference of about 96GB. The "Zenfone 4 Pro ZS551KL 128GB" can save more photos and keep more apps installed than the "Ulefone Armor X3 32GB". If you're searching for a smartphone that can store more data, we recommended that you buy the "Zenfone 4 Pro ZS551KL 128GB" rather than the "Ulefone Armor X3 32GB".

ScoreStorage size
Ulefone Armor X3 32GB55/10032.0GB
Zenfone 4 Pro ZS551KL 128GB90/100128.0GB

Compare the rear cameras of "Ulefone Armor X3 32GB" and "Zenfone 4 Pro ZS551KL 128GB". Which one has better picture quality?

One factor in how well your rear camera (the camera on the back of your device) performs is its megapixel count. With a higher megapixel count, you'll be able to take photos with sharper detail, photos that stay clear and sharp even when printed.

The main camera on the "Ulefone Armor X3 32GB" has 8.0MP. The "Zenfone 4 Pro ZS551KL 128GB" has 16.0MP. The rear-facing camera of the "Zenfone 4 Pro ZS551KL 128GB" also has a higher pixel count than the "Ulefone Armor X3 32GB", with a difference of about 8MP. The "Zenfone 4 Pro ZS551KL 128GB" is more capable than the "Ulefone Armor X3 32GB" of taking high-definition photos and videos, and produces better results when printing out the photos you have taken. If you want a smartphone that is designed for video and photography, we recommend buying the "Zenfone 4 Pro ZS551KL 128GB" rather than the "Ulefone Armor X3 32GB".

ScoreRear-camera resolution
Ulefone Armor X3 32GB50/1008.0MP
Zenfone 4 Pro ZS551KL 128GB68/10016.0MP

Which has a front camera with better picture quality, "Ulefone Armor X3 32GB" or "Zenfone 4 Pro ZS551KL 128GB"?

One indication of how well your forward facing camera (the camera on the same side as your device's screen) performs is how many megapixels it has. More megapixels means you'll be able to take photos with sharper detail, that still look amazing printed out.

The forward-facing camera on the "Ulefone Armor X3 32GB" has a resolution of 5.0MP. The "Zenfone 4 Pro ZS551KL 128GB"'s has 8.0MP. Comparing the front-facing camera performance, the number of pixels of the front-facing camera on the "Zenfone 4 Pro ZS551KL 128GB" is higher than the "Ulefone Armor X3 32GB", with a difference of approximately 3MP. For this reason, it is possible to take higher quality selfies and make clear prints with the "Zenfone 4 Pro ZS551KL 128GB" than the "Ulefone Armor X3 32GB". Therefore, the "Zenfone 4 Pro ZS551KL 128GB" is recommended.

ScoreFront-camera resolution
Ulefone Armor X3 32GB50/1005.0MP
Zenfone 4 Pro ZS551KL 128GB58/1008.0MP

Compare Performance Specs

Ulefone Armor X3 32GBZenfone 4 Pro ZS551KL 128GB
ImageUlefone Armor X3 32GBZenfone 4 Pro ZS551KL 128GB
MakerUlefoneAsus
Release date2019-072017-10
ColorBlack/Red/SilverMoonlight white/Pure Black
OSAndroidAndroid
Dimensions (width x height x thickness)77.5mm x 158.0mm x 13.9mm75.6mm x 156.9mm x 7.6mm
Weight235.0g175.0g
Display size5.5inch5.5inch
Display typeIPS LCDAMOLED
Screen resolution (width x height)720 x 14401080 x 1920
Pixel density292ppi400ppi
Battery capacity5000.0mAh3600.0mAh
ChipsetMediatek MT6580Qualcomm MSM8998 Snapdragon 835
CPU specs1.3GHz×4(4.0-cores)2.45GHz+1.9GHz×8(8.0-cores)
RAM size2.0GB6.0GB
Storage size32.0GB128.0GB
Rear-camera resolution8.0MP16.0MP
Front-camera resolution5.0MP8.0MP

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