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Vivo X21 UD (2018) 128GB vs Oppo F5 (2017) 64GB: Full Comparison!

Created date: 2018-09-30 21:33:27, Updated date: 2021-10-20 17:24:44

vivo X21 UD (2018) 128GBOppo F5 (2017) 64GB
vivo X21 UD (2018) 128GBOppo F5 (2017) 64GB

Are you having trouble comparing the differences in features and performance of the "vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB", or unsure about their differences in ease-of-use, and wondering which to buy? We did a deep-dive comparison of the features, specs, and capabilities of these two smartphone, and provided our rating of which one was a better buy.

vivo X21 UD (2018) 128GBOppo F5 (2017) 64GB
vivo X21 UD (2018) 128GB

Oppo F5 (2017) 64GB

General rating:
Holding comfortrating-image3.2
64/100
rating-image3.1
61/100
Weightrating-image3.4
67/100
rating-image3.5
69/100
Screen sizerating-image4.5
90/100
rating-image4.5
90/100
Display qualityrating-image4.2
84/100
rating-image4.2
84/100
Battery liferating-image3.4
68/100
rating-image3.4
68/100
Processing powerrating-image4.5
90/100
rating-image4.8
95/100
Memory capacityrating-image4.5
90/100
rating-image4.5
90/100
Storage capacityrating-image4.5
90/100
rating-image3.4
67/100
Rear camera performancerating-image3.0
59/100
rating-image3.4
68/100
Front camera performancerating-image3.5
70/100
rating-image4.1
81/100

"vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB", performance comparison

"vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB" size comparison. Which to choose?

The size of the body has a big influence on the ease of carrying and one-handed operation. The narrower the width, the easier it is to firmly grasp and hold, but you also have to take into account the device's thickness. Also, if the width and height are smaller, its easier to operate one-handed since its easier to extend your fingers. On the contrary, if the width and height are large, it's difficult to fit in your pocket and is bulky even when put in a bag, and portability is impaired.

The "vivo X21 UD (2018) 128GB" has a width of 74.8mm, a length of 154.5mm, and a thickness of 7.4mm. Also, the "Oppo F5 (2017) 64GB" has a width of 76.0mm, a length of 156.5mm, and a thickness of 7.5mm.

Comparing the width and thickness of the body, there isn't much difference between the "vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB" in terms of size. For that reason, the ease of gripping and carrying the devices in one hand is about the same for both. Therefore it's better to compare them in terms of performance and functionality.

Comparing the width and thickness of the body, there isn't a large difference in size between the "vivo X21 UD (2018) 128GB" and the "Oppo F5 (2017) 64GB". For that reason their one-handed operability, portability, and bulkiness when carried is about the same. That's why I think it's better to compare them in terms of other aspects of performance and functionality.

Comparing the overall size of the two devices, there isn't a big difference in size between the "vivo X21 UD (2018) 128GB" and the "Oppo F5 (2017) 64GB". For that reason the ease of carrying and use with one hand is about the same for both. That's why it is better to compare the two in terms of other aspects of performance and functionality.

ScoreDimensions (width x height x thickness)
vivo X21 UD (2018) 128GB64/10074.8mm x 154.5mm x 7.4mm
Oppo F5 (2017) 64GB61/10076.0mm x 156.5mm x 7.5mm

"vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB", which is more comfortable to hold? Weight comparison

The weight of the device affects hand fatigue and the burden placed upon the wrist. The lighter it is, the longer you'll be able to operate the device without tiring. Also, if the burden placed on the wrist is lower, you'll be able to use the device more comfortably. However if the weight isn't right for you, it could place more of a burden on your body, causing you to feel stress.

The weight of the "vivo X21 UD (2018) 128GB" is about 156.2g, and the weight of the "Oppo F5 (2017) 64GB" is about 152.0g. Comparing the weight of the two devices, there isn't much difference in weight between the "vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB". That's why the likelihood of fatigue in the fingers and wrists after extended use is about the same for both. That's why it is better to compare the two in terms of other aspects of performance and functionality.

ScoreWeight
vivo X21 UD (2018) 128GB67/100156.2g
Oppo F5 (2017) 64GB69/100152.0g

"vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB", whose display is easier to use?

The size of the screen affects usability and screen visibility. A larger screen means larger letters and buttons on apps, so the user is less likely to tap adjacent buttons by mistake. In addition, the user can enjoy a more intense experience when playing games and watching videos.

The "vivo X21 UD (2018) 128GB" has a 6.28inch display. Also, the "Oppo F5 (2017) 64GB" has a 6.0inch display. Comparing the screen size, there is a negligible difference in screen size between the "vivo X21 UD (2018) 128GB" and the "Oppo F5 (2017) 64GB". As a result, the app buttons on both are equally easy to press. We recommend comparing them based on other aspects of performance and functionality.

ScoreDisplay size
vivo X21 UD (2018) 128GB90/1006.28inch
Oppo F5 (2017) 64GB90/1006.0inch

"vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB", which has a clearer display?

Pixel density affects picture quality, and the higher the pixel density, the better the picture quality, which means the user can gain more enjoyment from games and videos. In addition, higher picture quality decreases eyestrain, which means that the user will experience less eye fatigue after prolonged use.

The resolution on the "vivo X21 UD (2018) 128GB" is 1080 x 2280, and pixel density is 401ppi. Also, the resolution on the "Oppo F5 (2017) 64GB" is 1080 x 2160, and pixel density is 402ppi. Comparing the pixel count, the difference in pixel density between the "vivo X21 UD (2018) 128GB" and the "Oppo F5 (2017) 64GB" is negligible. As a result, they are both evenly matched in terms of picture quality and easiness on the eyes. Therefore, we recommend comparing them based on other aspects of performance and functionality.

ScorePixel density
vivo X21 UD (2018) 128GB84/100401ppi
Oppo F5 (2017) 64GB84/100402ppi

"vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB", a summary of the differences in battery life

Battery performance greatly affects battery life, but greater battery capacity does not necessarily mean greater battery life, since battery efficiency should also be considered. Bigger screens and higher CPU performance will mean the batteries are depleted more quickly.

The "vivo X21 UD (2018) 128GB" is 3200.0mAh, and the "Oppo F5 (2017) 64GB" is 3200.0mAh. Regarding battery capacity, there is a negligible difference in battery capacity between the "vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB". Since both have roughly equal battery life, you are better off comparing them based on other aspects of performance and functionality.

ScoreBattery capacity
vivo X21 UD (2018) 128GB68/1003200.0mAh
Oppo F5 (2017) 64GB68/1003200.0mAh

"vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB", which has better CPU?

CPU performance affects the ability to process programs, and the ability to process programs is determined by the product of the number of cores in the CPU and the CPU frequency. The higher this performance is, the more smoothly apps and games will run, and with low performance apps and games become heavy and stress is experienced.

The "vivo X21 UD (2018) 128GB"'s CPU is a Qualcomm SDM660 Snapdragon 660, with performance measured at 2.2GHz+1.8GHz×8(8.0-cores). Also, the "Oppo F5 (2017) 64GB"'s CPU is a Mediatek MT6763T Helio P23, with performance measured at 2.5GHz×8(8.0-cores). Comparing CPU performance, the "Oppo F5 (2017) 64GB" has higher specs compared to the "vivo X21 UD (2018) 128GB". For that reason, the "Oppo F5 (2017) 64GB" allows for more comfortable use of apps, and games that run more smoothly. That's why we recommend the "Oppo F5 (2017) 64GB" over the "vivo X21 UD (2018) 128GB".

ScoreCPU specs
vivo X21 UD (2018) 128GB90/1002.2GHz+1.8GHz×8(8.0-cores)
Oppo F5 (2017) 64GB95/1002.5GHz×8(8.0-cores)

"vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB", what's the difference in memory capacity?

RAM affects multitasking ability and the stability of apps. The larger the amount of RAM is, the more stability there will be even in situations where multiple apps are running simultaneously, allowing for comfortable use. In addition, animation will be more smooth, and apps will be less likely to freeze or crash. Also, without sufficient RAM, there are games you won't be able to run, so it is necessary to be careful.

The weight of the "vivo X21 UD (2018) 128GB" is 6.0GB and the weight of the "Oppo F5 (2017) 64GB" is 6.0GB. Comparing the devices in terms of RAM, there is almost no difference in the amount of RAM of the "vivo X21 UD (2018) 128GB" and the "Oppo F5 (2017) 64GB". For that reason they have about the same level of multitasking performance and 3D game and VR smoothness. That's why it is better to make a comparison in terms of other aspects of performance and functionality.

ScoreRAM size
vivo X21 UD (2018) 128GB90/1006.0GB
Oppo F5 (2017) 64GB90/1006.0GB

"vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB", which has more data storage?

Storage capacity affects the amount of data that is capable of being stored. The larger the storage capacity, the more pictures you can take and the more applications you can install. In addition, if your smartphone accepts SD cards, then you can increase its storage capacity. However, there are performance related drawbacks, including a slower data transfer rate than the primary memory, and you cannot transfer all your data on the card, so be warned.

The data storage capacity of the "vivo X21 UD (2018) 128GB" is 128.0GB. Also the "Oppo F5 (2017) 64GB" is 64.0GB. Regarding storage capacity, the "vivo X21 UD (2018) 128GB" has a much larger data storage capacity compared to the "Oppo F5 (2017) 64GB", with a roughly 64GB difference. In terms of the number of pictures you can save and the applications that you can install, the "vivo X21 UD (2018) 128GB" is superior to the "Oppo F5 (2017) 64GB". If you are looking for a smartphone that can save more data, we recommend the "vivo X21 UD (2018) 128GB" over the "Oppo F5 (2017) 64GB".

ScoreStorage size
vivo X21 UD (2018) 128GB90/100128.0GB
Oppo F5 (2017) 64GB67/10064.0GB

"vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB" rear camera performance comparison. Which has a higher resolution?

One factor that determines the performance of the exterior camera located on the back of the device (the rear/back camera) is the pixel count. The larger the pixel count, the higher the resolution of the pictures you can take, and the cleaner the pictures will look when printed.

"vivo X21 UD (2018) 128GB" has a 12.0MP main camera. Also, "Oppo F5 (2017) 64GB" has a 16.0MP main camera. Comparing rear camera performance, the "Oppo F5 (2017) 64GB" has a higher pixel count than the "vivo X21 UD (2018) 128GB", with a roughly 4MP difference. As a result, the "Oppo F5 (2017) 64GB" is better able to take high quality landscape pictures than the "vivo X21 UD (2018) 128GB", and the pictures will look cleaner when printed. Therefore, we recommend the "Oppo F5 (2017) 64GB".

ScoreRear-camera resolution
vivo X21 UD (2018) 128GB59/10012.0MP
Oppo F5 (2017) 64GB68/10016.0MP

"vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB", whose front camera has a better picture quality?

One factor that determines the performance of the exterior camera located on the front of the device (the in/front camera) is the pixel count. The larger the pixel count, the higher the resolution of the pictures you can take, and the cleaner the pictures will look when printed.

"vivo X21 UD (2018) 128GB" has an 12.0MP front camera and "Oppo F5 (2017) 64GB" has an 20.0MP front camera. Comparing rear camera performance, the front camera of the "Oppo F5 (2017) 64GB" has a much higher pixel count compared to the "vivo X21 UD (2018) 128GB", with a roughly 8MP difference. As a result, the "Oppo F5 (2017) 64GB" is more suited than the "vivo X21 UD (2018) 128GB" for shooting videos and taking pictures. If you are looking for a smartphone that is suited for shooting high resolution selfies which will look clean when printed, we recommend the "Oppo F5 (2017) 64GB" over the "vivo X21 UD (2018) 128GB".

ScoreFront-camera resolution
vivo X21 UD (2018) 128GB70/10012.0MP
Oppo F5 (2017) 64GB81/10020.0MP

"vivo X21 UD (2018) 128GB" and "Oppo F5 (2017) 64GB", performance comparison by specification sheet

vivo X21 UD (2018) 128GBOppo F5 (2017) 64GB
Imagevivo X21 UD (2018) 128GBOppo F5 (2017) 64GB
MakervivoOppo
Release date2018-032017-11
ColorBlack/Ruby RedBlack/Gold/Red
OSAndroidAndroid
Dimensions (width x height x thickness)74.8mm x 154.5mm x 7.4mm76.0mm x 156.5mm x 7.5mm
Weight156.2g152.0g
Display size6.28inch6.0inch
Display typeSuper AMOLEDLTPS IPS LCD
Screen resolution (width x height)1080 x 22801080 x 2160
Pixel density401ppi402ppi
Battery capacity3200.0mAh3200.0mAh
ChipsetQualcomm SDM660 Snapdragon 660Mediatek MT6763T Helio P23
CPU specs2.2GHz+1.8GHz×8(8.0-cores)2.5GHz×8(8.0-cores)
RAM size6.0GB6.0GB
Storage size128.0GB64.0GB
Rear-camera resolution12.0MP16.0MP
Front-camera resolution12.0MP20.0MP

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