Browsing this site requires consent to the privacy policy. By continuing to browse, you agree to our privacy policy. If you do not agree, please stop browsing. Privacy policy

All our articles is independent of any advertiser or commercial initiative, and if you buy something through our posts, we may get a small share of the sale. Click here for more information.

Which should you buy, the vivo iQOO U1 128GB or ROG Phone II ZS660KL 1024GB? We offer a thorough comparison of the differences in functions, specifications and performance between the two

Created date: 2020-07-26 15:49:45

vivo iQOO U1 128GBROG Phone II ZS660KL 1024GB
vivo iQOO U1 128GBROG Phone II ZS660KL 1024GB

Here's our thorough comparison of the difference in performance and function between the "vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB". Which one should you buy? We'll compare and explain what differs between the "vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB" in a way that even people who aren't used to choosing between two similar products can understand.

vivo iQOO U1 128GBROG Phone II ZS660KL 1024GB
vivo iQOO U1 128GB

ROG Phone II ZS660KL 1024GB

General rating:

74.8/100

(The 3279th of all smartphones)

80.8/100

(The 5168th of all smartphones)

Holding comfort
58/100
55/100
Weight
54/100
44/100
Screen size
90/100
90/100
Display quality
83/100
82/100
Battery life
81/100
86/100
Processing power
92/100
98/100
Memory capacity
93/100
99/100
Storage capacity
90/100
99/100
Rear camera performance
97/100
97/100
Front camera performance
58/100
86/100

"vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB", performance comparison

"vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB" 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 iQOO U1 128GB" has a width of 76.6mm, a length of 162.1mm, and a thickness of 8.5mm. Also, the "ROG Phone II ZS660KL 1024GB" has a width of 77.6mm, a length of 171.0mm, and a thickness of 9.5mm.

Comparing the width and thickness of the body, there isn't much difference between the "vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB" 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 iQOO U1 128GB" and the "ROG Phone II ZS660KL 1024GB". 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 iQOO U1 128GB" and the "ROG Phone II ZS660KL 1024GB". 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 iQOO U1 128GB58/10076.6mm x 162.1mm x 8.5mm
ROG Phone II ZS660KL 1024GB55/10077.6mm x 171.0mm x 9.5mm

"vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB", 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 iQOO U1 128GB" is about 190.0g, and the weight of the "ROG Phone II ZS660KL 1024GB" is about 240.0g. Comparing the weight of the two devices, the "vivo iQOO U1 128GB" is a considerably lighter smart phone than the "ROG Phone II ZS660KL 1024GB", and there is a difference of about 50g. In terms of the burden placed upon your fingers and wrist, the "vivo iQOO U1 128GB" is superior to the "ROG Phone II ZS660KL 1024GB". If you are going for a smart phone that won't lead to hand fatigue even after extended use, and is less likely to place a burden on your fingers, we recommend purchasing the "vivo iQOO U1 128GB" over the "ROG Phone II ZS660KL 1024GB".

ScoreWeight
vivo iQOO U1 128GB54/100190.0g
ROG Phone II ZS660KL 1024GB44/100240.0g

"vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB", 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 iQOO U1 128GB" has a 6.53inch display. Also, the "ROG Phone II ZS660KL 1024GB" has a 6.59inch display. Comparing the screen size, there is a negligible difference in screen size between the "vivo iQOO U1 128GB" and the "ROG Phone II ZS660KL 1024GB". 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 iQOO U1 128GB90/1006.53inch
ROG Phone II ZS660KL 1024GB90/1006.59inch

"vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB", 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 iQOO U1 128GB" is 1080 x 2340, and pixel density is 394ppi. Also, the resolution on the "ROG Phone II ZS660KL 1024GB" is 1080 x 2340, and pixel density is 391ppi. Comparing the pixel count, the difference in pixel density between the "vivo iQOO U1 128GB" and the "ROG Phone II ZS660KL 1024GB" 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 iQOO U1 128GB83/100394ppi
ROG Phone II ZS660KL 1024GB82/100391ppi

"vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB", 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 iQOO U1 128GB" is 4500.0mAh, and the "ROG Phone II ZS660KL 1024GB" is 6000.0mAh. Regarding battery capacity, there is a negligible difference in battery capacity between the "vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB". Since both have roughly equal battery life, you are better off comparing them based on other aspects of performance and functionality.

ScoreBattery capacity
vivo iQOO U1 128GB81/1004500.0mAh
ROG Phone II ZS660KL 1024GB86/1006000.0mAh

"vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB", 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 iQOO U1 128GB"'s CPU is a Qualcomm SM7125 Snapdragon 720G, with performance measured at 2.3GHz+1.8GHz×8(8.0-cores). Also, the "ROG Phone II ZS660KL 1024GB"'s CPU is a Qualcomm SM8150 Snapdragon 855+, with performance measured at 2.96GHz+2.42GHz+1.78GHz×8(8.0-cores). Comparing CPU performance, the "ROG Phone II ZS660KL 1024GB" has higher specs compared to the "vivo iQOO U1 128GB". For that reason, the "ROG Phone II ZS660KL 1024GB" allows for more comfortable use of apps, and games that run more smoothly. That's why we recommend the "ROG Phone II ZS660KL 1024GB" over the "vivo iQOO U1 128GB".

ScoreCPU specs
vivo iQOO U1 128GB92/1002.3GHz+1.8GHz×8(8.0-cores)
ROG Phone II ZS660KL 1024GB98/1002.96GHz+2.42GHz+1.78GHz×8(8.0-cores)

"vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB", 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 iQOO U1 128GB" is 8.0GB and the weight of the "ROG Phone II ZS660KL 1024GB" is 12.0GB. Comparing the devices in terms of RAM, the "ROG Phone II ZS660KL 1024GB" has more RAM than the "vivo iQOO U1 128GB", with a difference of about 4GB. For that reason the "ROG Phone II ZS660KL 1024GB" allows for smoother multitasking than the "vivo iQOO U1 128GB", and apps are less likely to crash. In addition the "ROG Phone II ZS660KL 1024GB" allows for smoother enjoyment of 3D games and VR. For this reason, we recommend the "ROG Phone II ZS660KL 1024GB".

ScoreRAM size
vivo iQOO U1 128GB93/1008.0GB
ROG Phone II ZS660KL 1024GB99/10012.0GB

"vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB", 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 iQOO U1 128GB" is 128.0GB. Also the "ROG Phone II ZS660KL 1024GB" is 1024.0GB. Regarding storage capacity, the "ROG Phone II ZS660KL 1024GB" has a greater storage capacity compared to the "vivo iQOO U1 128GB", with a roughly 896GB difference. As a result, the "ROG Phone II ZS660KL 1024GB" can take more pictures and videos, and have more applications installed, than the "vivo iQOO U1 128GB". Therefore, we recommend the "ROG Phone II ZS660KL 1024GB".

ScoreStorage size
vivo iQOO U1 128GB90/100128.0GB
ROG Phone II ZS660KL 1024GB99/1001024.0GB

"vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB" 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 iQOO U1 128GB" has a 48.0MP main camera. Also, "ROG Phone II ZS660KL 1024GB" has a 48.0MP main camera. Comparing rear camera performance, the "vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB" have approximately the same pixel count. As a result, they can both take pictures and shoot videos of roughly the same quality. Therefore, we recommend comparing the two based on other aspects of performance and functionality.

ScoreRear-camera resolution
vivo iQOO U1 128GB97/10048.0MP
ROG Phone II ZS660KL 1024GB97/10048.0MP

"vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB", 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 iQOO U1 128GB" has an 8.0MP front camera and "ROG Phone II ZS660KL 1024GB" has an 24.0MP front camera. Comparing rear camera performance, the front camera of the "ROG Phone II ZS660KL 1024GB" has a much higher pixel count compared to the "vivo iQOO U1 128GB", with a roughly 16MP difference. As a result, the "ROG Phone II ZS660KL 1024GB" is more suited than the "vivo iQOO U1 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 "ROG Phone II ZS660KL 1024GB" over the "vivo iQOO U1 128GB".

ScoreFront-camera resolution
vivo iQOO U1 128GB58/1008.0MP
ROG Phone II ZS660KL 1024GB86/10024.0MP

"vivo iQOO U1 128GB" and "ROG Phone II ZS660KL 1024GB", performance comparison by specification sheet

vivo iQOO U1 128GBROG Phone II ZS660KL 1024GB
Imagevivo iQOO U1 128GBROG Phone II ZS660KL 1024GB
MakervivoAsus
Release date2020-07-232019-09
ColorBlack/Blue/WhiteMatte Black/Glossy Black
OSAndroidAndroid
Dimensions (width x height x thickness)76.6mm x 162.1mm x 8.5mm77.6mm x 171.0mm x 9.5mm
Weight190.0g240.0g
Display size6.53inch6.59inch
Display typeIPS LCDAMOLED
Screen resolution (width x height)1080 x 23401080 x 2340
Pixel density394ppi391ppi
Battery capacity4500.0mAh6000.0mAh
ChipsetQualcomm SM7125 Snapdragon 720GQualcomm SM8150 Snapdragon 855+
CPU specs2.3GHz+1.8GHz×8(8.0-cores)2.96GHz+2.42GHz+1.78GHz×8(8.0-cores)
RAM size8.0GB12.0GB
Storage size128.0GB1024.0GB
Rear-camera resolution48.0MP48.0MP
Front-camera resolution8.0MP24.0MP

Look at a smartphone

Compare smartphones

Look at a smartphone

Compare smartphones

Check price

Articles related to vivo iQOO U1 128GB
Articles related to ROG Phone II ZS660KL 1024GB

vivo iQOO U1 128GB

Search for smartphone with similar ratings as vivo iQOO U1 128GB

Articles related to vivo iQOO U1 128GB
Articles related to ROG Phone II ZS660KL 1024GB

ROG Phone II ZS660KL 1024GB

Search for smartphone with similar ratings as ROG Phone II ZS660KL 1024GB

New articles