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Compare vivo X21 UD (2018) 128GB vs HTC J butterfly HTV31 au 32GB

Created date: 2018-09-30 22:10:41, Updated date: 2021-10-20 18:01:58

vivo X21 UD (2018) 128GBHTC J butterfly HTV31 au 32GB
vivo X21 UD (2018) 128GBHTC J butterfly HTV31 au 32GB

Here's our thorough comparison of the difference in performance and function between the "vivo X21 UD (2018) 128GB" and "HTC J butterfly HTV31 au 32GB". Which one should you buy? We'll compare and explain what differs between the "vivo X21 UD (2018) 128GB" and "HTC J butterfly HTV31 au 32GB" in a way that even people who aren't used to choosing between two similar products can understand.

vivo X21 UD (2018) 128GBHTC J butterfly HTV31 au 32GB
vivo X21 UD (2018) 128GB

HTC J butterfly HTV31 au 32GB

General rating:
Portabilityrating-image3.2
74.8mm x 154.5mm x 7.4mm
rating-image3.1
73.0mm x 151.0mm x 10.7mm
Weightrating-image3.4
156.2g
rating-image3.3
162.0g
Size of screenrating-image4.5
6.28inch
rating-image3.9
5.2inch
Screen clarityrating-image4.2
401ppi
rating-image4.5
564ppi
Battery durationrating-image3.4
3200.0mAh
rating-image3.0
2700.0mAh
Processing capabilityrating-image4.5
2.2GHz+1.8GHz×8(8.0-cores)
rating-image3.7
2.0GHz+1.5GHz×8(8.0-cores)
Memory capacityrating-image4.5
6.0GB
rating-image3.0
3.0GB
Storage capacityrating-image4.5
128.0GB
rating-image2.8
32.0GB
Rear camera functionrating-image3.0
12.0MP
rating-image3.9
20.2MP
Front camera functionrating-image3.5
12.0MP
rating-image3.6
13.0MP

Compare Performance and Usability

Size comparison of "vivo X21 UD (2018) 128GB" and "HTC J butterfly HTV31 au 32GB". 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 "vivo X21 UD (2018) 128GB" is 74.8mm wide, 154.5mm tall, and 7.4mm thick. The "HTC J butterfly HTV31 au 32GB" is 73.0mm tall, 151.0mm wide, and 10.7mm thick.

There is no real difference between the "vivo X21 UD (2018) 128GB" and "HTC J butterfly HTV31 au 32GB" when comparing their width, thickness, and slimness; they are both around the same in terms of one-handed ease of use and carry. Because of this, it is better to compare them based on other aspects of performance and function.

There is no real difference in length or width between the "vivo X21 UD (2018) 128GB" and "HTC J butterfly HTV31 au 32GB", 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.

When comparing their sizes as a whole, there is no real difference between the "vivo X21 UD (2018) 128GB"and "HTC J butterfly HTV31 au 32GB". Thus they are roughly the same in terms of ease of carry and one-handed use. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreDimensions (width x height x thickness)
vivo X21 UD (2018) 128GB64/10074.8mm x 154.5mm x 7.4mm
HTC J butterfly HTV31 au 32GB61/10073.0mm x 151.0mm x 10.7mm

Which one is easier to hold, "vivo X21 UD (2018) 128GB" or "HTC J butterfly HTV31 au 32GB"? 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 "vivo X21 UD (2018) 128GB" weighs 156.2g. The "HTC J butterfly HTV31 au 32GB" clocks in at 162.0g. The "vivo X21 UD (2018) 128GB" and "HTC J butterfly HTV31 au 32GB" have around the same weight, so prolonged use will tire out fingers nd wrists to around the same degree. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreWeight
vivo X21 UD (2018) 128GB67/100156.2g
HTC J butterfly HTV31 au 32GB65/100162.0g

Which is better in terms of display, "vivo X21 UD (2018) 128GB" or "HTC J butterfly HTV31 au 32GB"?

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 "vivo X21 UD (2018) 128GB" is 6.28inch, and 5.2inch on the "HTC J butterfly HTV31 au 32GB". Comparing the sizes of the screens and displays, the "vivo X21 UD (2018) 128GB" is considerably larger than the "HTC J butterfly HTV31 au 32GB", with a difference of about 1.08inch. Compared to the "HTC J butterfly HTV31 au 32GB", the "vivo X21 UD (2018) 128GB" makes buttons in apps easier to press, and the visuals look more impressive in videos and games. The larger screen of the "vivo X21 UD (2018) 128GB" also has the advantage of being less tiring on the eyes. If you want to avoid tapping the wrong place, enjoy videos and games on a large screen, and not get tired eyes while using it, we recommend that you buy the "vivo X21 UD (2018) 128GB" rather than the "HTC J butterfly HTV31 au 32GB".

ScoreDisplay size
vivo X21 UD (2018) 128GB90/1006.28inch
HTC J butterfly HTV31 au 32GB77/1005.2inch

Which one has a better display, "vivo X21 UD (2018) 128GB" or "HTC J butterfly HTV31 au 32GB"?

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 "vivo X21 UD (2018) 128GB" has a 1080 x 2280 resolution and a pixel density of 401ppi. The "HTC J butterfly HTV31 au 32GB", on the other hand, has a screen resolution of 1440 x 2560 and a pixel density of 564ppi. There is not much of a difference in the pixel resolutions of the "vivo X21 UD (2018) 128GB" and "HTC J butterfly HTV31 au 32GB", so they are about the same in terms of clarity of image and gentleness on the eyes. For this reason it is better to compare them based on other aspects of performance and function.

ScorePixel density
vivo X21 UD (2018) 128GB84/100401ppi
HTC J butterfly HTV31 au 32GB89/100564ppi

How is the battery duration of "vivo X21 UD (2018) 128GB" different from that of "HTC J butterfly HTV31 au 32GB" ? 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 "vivo X21 UD (2018) 128GB" has a battery capacity of 3200.0mAh, while the "HTC J butterfly HTV31 au 32GB" has a 2700.0mAh battery. Regarding the battery performance, the "vivo X21 UD (2018) 128GB" has a larger battery capacity than the "HTC J butterfly HTV31 au 32GB", with a difference of 500mAh. If you are choosing based on the battery, the "vivo X21 UD (2018) 128GB" is recommended over the "HTC J butterfly HTV31 au 32GB".

ScoreBattery capacity
vivo X21 UD (2018) 128GB68/1003200.0mAh
HTC J butterfly HTV31 au 32GB60/1002700.0mAh

Which is better in terms of CPU function, "vivo X21 UD (2018) 128GB" or "HTC J butterfly HTV31 au 32GB"?

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 "vivo X21 UD (2018) 128GB" is equipped with a Qualcomm SDM660 Snapdragon 660 processor, and its performance speed is 2.2GHz+1.8GHz×8(8.0-cores). The "HTC J butterfly HTV31 au 32GB" uses an Qualcomm Snapdragon 810 MSM8994 CPU that performs at a speed of 2.0GHz+1.5GHz×8(8.0-cores). Comparing CPU performance, the "vivo X21 UD (2018) 128GB" has significantly higher specs than the "HTC J butterfly HTV31 au 32GB". The "vivo X21 UD (2018) 128GB" proves to be more advanced than the "HTC J butterfly HTV31 au 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 "vivo X21 UD (2018) 128GB" rather than the "HTC J butterfly HTV31 au 32GB".

ScoreCPU specs
vivo X21 UD (2018) 128GB90/1002.2GHz+1.8GHz×8(8.0-cores)
HTC J butterfly HTV31 au 32GB73/1002.0GHz+1.5GHz×8(8.0-cores)

How is "vivo X21 UD (2018) 128GB" different from "HTC J butterfly HTV31 au 32GB" 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 "vivo X21 UD (2018) 128GB" has 6.0GB of memory. The "HTC J butterfly HTV31 au 32GB", on the other hand, has 3.0GB. As for memory performance, the "vivo X21 UD (2018) 128GB" has a larger memory capacity than the "HTC J butterfly HTV31 au 32GB", with a difference of about 3GB. The "vivo X21 UD (2018) 128GB" has better multitasking, less crashing, and runs 3D games and VR video better than the "HTC J butterfly HTV31 au 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 "vivo X21 UD (2018) 128GB" rather than the "HTC J butterfly HTV31 au 32GB".

ScoreRAM size
vivo X21 UD (2018) 128GB90/1006.0GB
HTC J butterfly HTV31 au 32GB60/1003.0GB

Which has a better storage capacity, "vivo X21 UD (2018) 128GB" or "HTC J butterfly HTV31 au 32GB"?

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 "vivo X21 UD (2018) 128GB" has 128.0GB of storage, while the "HTC J butterfly HTV31 au 32GB" has 32.0GB. In terms of ROM and data storage, the "vivo X21 UD (2018) 128GB" has a much larger capacity than the "HTC J butterfly HTV31 au 32GB", with a difference of about 96GB. The "vivo X21 UD (2018) 128GB" can save more photos and keep more apps installed than the "HTC J butterfly HTV31 au 32GB". If you're searching for a smartphone that can store more data, we recommended that you buy the "vivo X21 UD (2018) 128GB" rather than the "HTC J butterfly HTV31 au 32GB".

ScoreStorage size
vivo X21 UD (2018) 128GB90/100128.0GB
HTC J butterfly HTV31 au 32GB55/10032.0GB

Compare the rear cameras of "vivo X21 UD (2018) 128GB" and "HTC J butterfly HTV31 au 32GB". 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 "vivo X21 UD (2018) 128GB" has 12.0MP. The "HTC J butterfly HTV31 au 32GB" has 20.2MP. The rear-facing camera of the "HTC J butterfly HTV31 au 32GB" also has a higher pixel count than the "vivo X21 UD (2018) 128GB", with a difference of about 8.2MP. The "HTC J butterfly HTV31 au 32GB" is more capable than the "vivo X21 UD (2018) 128GB" 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 "HTC J butterfly HTV31 au 32GB" rather than the "vivo X21 UD (2018) 128GB".

ScoreRear-camera resolution
vivo X21 UD (2018) 128GB59/10012.0MP
HTC J butterfly HTV31 au 32GB78/10020.2MP

Which has a front camera with better picture quality, "vivo X21 UD (2018) 128GB" or "HTC J butterfly HTV31 au 32GB"?

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 "vivo X21 UD (2018) 128GB" has a resolution of 12.0MP. The "HTC J butterfly HTV31 au 32GB"'s has 13.0MP. There is little difference between the camera capabilities and the pixel density of the "vivo X21 UD (2018) 128GB" and "HTC J butterfly HTV31 au 32GB"'s front facing cameras, so the quality of photographs and video footage is virtually the same. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreFront-camera resolution
vivo X21 UD (2018) 128GB70/10012.0MP
HTC J butterfly HTV31 au 32GB71/10013.0MP

Compare Performance Specs

vivo X21 UD (2018) 128GBHTC J butterfly HTV31 au 32GB
Imagevivo X21 UD (2018) 128GBHTC J butterfly HTV31 au 32GB
MakervivoHTC
Release date2018-032015-06-05
ColorBlack/Ruby Red/ /
OSAndroidAndroid
Dimensions (width x height x thickness)74.8mm x 154.5mm x 7.4mm73.0mm x 151.0mm x 10.7mm
Weight156.2g162.0g
Display size6.28inch5.2inch
Display typeSuper AMOLEDSuper LCD3 WQHD
Screen resolution (width x height)1080 x 22801440 x 2560
Pixel density401ppi564ppi
Battery capacity3200.0mAh2700.0mAh
ChipsetQualcomm SDM660 Snapdragon 660Qualcomm Snapdragon 810 MSM8994
CPU specs2.2GHz+1.8GHz×8(8.0-cores)2.0GHz+1.5GHz×8(8.0-cores)
RAM size6.0GB3.0GB
Storage size128.0GB32.0GB
Rear-camera resolution12.0MP20.2MP
Front-camera resolution12.0MP13.0MP

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