Which should you buy, the Galaxy S20 Ultra 5G or ROG Phone II ZS660KL? We offer a thorough comparison of the differences in functions, specifications and performance between the two

Created date: 02/10/2020, 13:44:49, Updated date: 04/16/2020, 10:36:14

Galaxy S20 Ultra 5GROG Phone II ZS660KL
Galaxy S20 Ultra 5GROG Phone II ZS660KL

Explaining the difference between Galaxy S20 Ultra 5G and ROG Phone II ZS660KL by comparing Galaxy S20 Ultra 5G and ROG Phone II ZS660KL. Check it out if you are considering purchasing a new device but cannot decide between Galaxy S20 Ultra 5G and ROG Phone II ZS660KL.

Galaxy S20 Ultra 5GROG Phone II ZS660KL
Galaxy S20 Ultra 5G

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ROG Phone II ZS660KL

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General rating:

86.3/100

(The 1st of all smartphones)

82.6/100

(The 13th of all smartphones)

Holding comfort
59/100
55/100
Weight
46/100
44/100
Screen size
91/100
90/100
Display quality
87/100
82/100
Battery life
83/100
86/100
Processing power
98/100
98/100
Memory capacity
100/100
99/100
Storage capacity
95/100
99/100
Rear camera performance
100/100
97/100
Front camera performance
100/100
86/100

Galaxy S20 Ultra 5G and ROG Phone II ZS660KL, performance comparison

Galaxy S20 Ultra 5G and ROG Phone II ZS660KL 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 Galaxy S20 Ultra 5G has a width of 3.0 inches (76 mm), a length of 6.6 inches (166.9 mm), and a thickness of 0.3 inches (8.8 mm). Also, the ROG Phone II ZS660KL has a width of 3.1 inches (77.6 mm), a length of 6.7 inches (171 mm), and a thickness of 0.4 inches (9.5 mm).

Comparing the width and thickness of the body, there isn't much difference between the Galaxy S20 Ultra 5G and ROG Phone II ZS660KL 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 Galaxy S20 Ultra 5G and the ROG Phone II ZS660KL. 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 Galaxy S20 Ultra 5G and the ROG Phone II ZS660KL. 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)
Galaxy S20 Ultra 5G59/1003.0 inches (76 mm) x 6.6 inches (166.9 mm) x 0.3 inches (8.8 mm)
ROG Phone II ZS660KL55/1003.1 inches (77.6 mm) x 6.7 inches (171 mm) x 0.4 inches (9.5 mm)

Galaxy S20 Ultra 5G and ROG Phone II ZS660KL, 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 Galaxy S20 Ultra 5G is about 222 oz (222 g), and the weight of the ROG Phone II ZS660KL is about 240 oz (240 g). Comparing the weight of the two devices, there isn't much difference in weight between the Galaxy S20 Ultra 5G and ROG Phone II ZS660KL. 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
Galaxy S20 Ultra 5G46/100222 oz (222 g)
ROG Phone II ZS660KL44/100240 oz (240 g)

Galaxy S20 Ultra 5G and ROG Phone II ZS660KL, 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 Galaxy S20 Ultra 5G has a 6.9 inch display. Also, the ROG Phone II ZS660KL has a 6.59 inch display. Comparing the screen size, there is a negligible difference in screen size between the Galaxy S20 Ultra 5G and the ROG Phone II ZS660KL. 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
Galaxy S20 Ultra 5G91/1006.9 inch
ROG Phone II ZS660KL90/1006.59 inch

Galaxy S20 Ultra 5G and ROG Phone II ZS660KL, 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 Galaxy S20 Ultra 5G is 1440 x 3200, and pixel density is 508 ppi. Also, the resolution on the ROG Phone II ZS660KL is 1080 x 2340, and pixel density is 391 ppi. Comparing the pixel count, the difference in pixel density between the Galaxy S20 Ultra 5G and the ROG Phone II ZS660KL 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
Galaxy S20 Ultra 5G87/100508 ppi
ROG Phone II ZS660KL82/100391 ppi

Galaxy S20 Ultra 5G and ROG Phone II ZS660KL, 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 Galaxy S20 Ultra 5G is 5000 mAh, and the ROG Phone II ZS660KL is 6000 mAh. Regarding battery capacity, there is a negligible difference in battery capacity between the Galaxy S20 Ultra 5G and ROG Phone II ZS660KL. Since both have roughly equal battery life, you are better off comparing them based on other aspects of performance and functionality.

ScoreBattery capacity
Galaxy S20 Ultra 5G83/1005000 mAh
ROG Phone II ZS660KL86/1006000 mAh

Galaxy S20 Ultra 5G and ROG Phone II ZS660KL, 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 Galaxy S20 Ultra 5G's CPU is a Exynos 990, with performance measured at 2.73GHz+2.5GHz+2.0GHz×8(OctaCore). Also, the ROG Phone II ZS660KL's CPU is a Qualcomm SM8150 Snapdragon 855+, with performance measured at 2.96GHz+2.42GHz+1.78GHz×8(OctaCore). Comparing CPU performance, there is almost no difference in the specs of the Galaxy S20 Ultra 5G and the ROG Phone II ZS660KL. For that reason the level of smoothness felt when using apps and comfortable handling of games is about the same. For that reason it is better to compare them in terms of other aspects of performance and functionality.

ScoreCPU specs
Galaxy S20 Ultra 5G98/1002.73GHz+2.5GHz+2.0GHz×8(OctaCore)
ROG Phone II ZS660KL98/1002.96GHz+2.42GHz+1.78GHz×8(OctaCore)

Galaxy S20 Ultra 5G and ROG Phone II ZS660KL, 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 Galaxy S20 Ultra 5G is 16GB and the weight of the ROG Phone II ZS660KL is 12GB. Comparing the devices in terms of RAM, there is almost no difference in the amount of RAM of the Galaxy S20 Ultra 5G and the ROG Phone II ZS660KL. 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
Galaxy S20 Ultra 5G100/10016GB
ROG Phone II ZS660KL99/10012GB

Galaxy S20 Ultra 5G and ROG Phone II ZS660KL, 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 Galaxy S20 Ultra 5G is 512GB. Also the ROG Phone II ZS660KL is 1024GB. Regarding storage capacity, there is a negligible difference in storage capacity between the Galaxy S20 Ultra 5G and ROG Phone II ZS660KL. As a result, you can save roughly the same amount of pictures, and install roughly the same amount of applications, on either phone. You are better off comparing them based on other aspects of performance and functionality.

ScoreStorage size
Galaxy S20 Ultra 5G95/100512GB
ROG Phone II ZS660KL99/1001024GB

Galaxy S20 Ultra 5G and ROG Phone II ZS660KL 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.

Galaxy S20 Ultra 5G has a 108 MP main camera. Also, ROG Phone II ZS660KL has a 48 MP main camera. Comparing rear camera performance, the Galaxy S20 Ultra 5G and ROG Phone II ZS660KL 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
Galaxy S20 Ultra 5G100/100108 MP
ROG Phone II ZS660KL97/10048 MP

Galaxy S20 Ultra 5G and ROG Phone II ZS660KL, 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.

Galaxy S20 Ultra 5G has an 40 MP front camera and ROG Phone II ZS660KL has an 24 MP front camera. Comparing rear camera performance, the front camera of the Galaxy S20 Ultra 5G has a much higher pixel count compared to the ROG Phone II ZS660KL, with a roughly 16 MP difference. As a result, the Galaxy S20 Ultra 5G is more suited than the ROG Phone II ZS660KL 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 Galaxy S20 Ultra 5G over the ROG Phone II ZS660KL.

ScoreFront-camera resolution
Galaxy S20 Ultra 5G100/10040 MP
ROG Phone II ZS660KL86/10024 MP

Detailed comparison of Galaxy S20 Ultra 5G and ROG Phone II ZS660KL

Comparison for general rating

ImageProduct nameReviewgeneral rating

Galaxy S20 Ultra 5G

Score

86.3Color:Cosmic Grey/Cosmic Black, Dimensions (width x height x thickness):3.0 inches (76 mm) x 6.6 inches (166.9 mm) x 0.3 inches (8.8 mm), Weight:222 oz (222 g), Display type:Dynamic AMOLED 2X, Screen resolution (width x height):1440 x 3200, Pixel density:508 ppi, Display size:6.9 inch, OS:Android

ROG Phone II ZS660KL

Score

82.6Color:Matte Black/Glossy Black, Dimensions (width x height x thickness):3.1 inches (77.6 mm) x 6.7 inches (171 mm) x 0.4 inches (9.5 mm), Weight:240 oz (240 g), Display type:AMOLED, Screen resolution (width x height):1080 x 2340, Pixel density:391 ppi, Display size:6.59 inch, OS:Android

Comparison for body size

ImageProduct nameReviewbody size

Galaxy S20 Ultra 5G

Score

48.6

ROG Phone II ZS660KL

Score

45.6

Comparison for body weight

ImageProduct nameReviewbody weight

Galaxy S20 Ultra 5G

Score

46.8

ROG Phone II ZS660KL

Score

44.2

Comparison for screen size

ImageProduct nameReviewscreen size

Galaxy S20 Ultra 5G

Score

91.5

ROG Phone II ZS660KL

Score

91.0

Comparison for screen resolution

ImageProduct nameReviewscreen resolution

Galaxy S20 Ultra 5G

Score

97.7

ROG Phone II ZS660KL

Score

75.3

Comparison for GPU performance

ImageProduct nameReviewGPU performance

Galaxy S20 Ultra 5G

Score

81.8

ROG Phone II ZS660KL

Score

92.5

Comparison for RAM capacity

ImageProduct nameReviewRAM capacity

Galaxy S20 Ultra 5G

Score

100.0

ROG Phone II ZS660KL

Score

99.0

Comparison for storage size

ImageProduct nameReviewstorage size

Galaxy S20 Ultra 5G

Score

95.0

ROG Phone II ZS660KL

Score

99.0

Comparison for process integration

ImageProduct nameReviewprocess integration

Galaxy S20 Ultra 5G

Score

98.0

ROG Phone II ZS660KL

Score

98.0

Comparison for battery

ImageProduct nameReviewbattery

Galaxy S20 Ultra 5G

Score

83.0

ROG Phone II ZS660KL

Score

86.0

Comparison for downlink data communication speed

ImageProduct nameReviewdownlink data communication speed

Galaxy S20 Ultra 5G

Score

95.0

ROG Phone II ZS660KL

Score

87.1

Comparison for rear-camera resolution

ImageProduct nameReviewrear-camera resolution

Galaxy S20 Ultra 5G

Score

100.0

ROG Phone II ZS660KL

Score

97.8

Comparison for number of wide-angle camera pixels on the back

ImageProduct nameReviewnumber of wide-angle camera pixels on the back

Galaxy S20 Ultra 5G

Score

97.9

ROG Phone II ZS660KL

Score

89.0

Comparison for front-camera resolution

ImageProduct nameReviewfront-camera resolution

Galaxy S20 Ultra 5G

Score

100.0

ROG Phone II ZS660KL

Score

86.6

Comparison for grip

ImageProduct nameReviewgrip

Galaxy S20 Ultra 5G

Score

47.7Color:Cosmic Grey/Cosmic Black, Dimensions (width x height x thickness):3.0 inches (76 mm) x 6.6 inches (166.9 mm) x 0.3 inches (8.8 mm), Weight:222 oz (222 g)

ROG Phone II ZS660KL

Score

44.9Color:Matte Black/Glossy Black, Dimensions (width x height x thickness):3.1 inches (77.6 mm) x 6.7 inches (171 mm) x 0.4 inches (9.5 mm), Weight:240 oz (240 g)

Comparison for screen cleanliness

ImageProduct nameReviewscreen cleanliness

Galaxy S20 Ultra 5G

Score

87.8Display type:Dynamic AMOLED 2X, Screen resolution (width x height):1440 x 3200, Pixel density:508 ppi

ROG Phone II ZS660KL

Score

82.9Display type:AMOLED, Screen resolution (width x height):1080 x 2340, Pixel density:391 ppi

Comparison for screen quality

ImageProduct nameReviewscreen quality

Galaxy S20 Ultra 5G

Score

91.8Display size:6.9 inch, Display type:Dynamic AMOLED 2X, Screen resolution (width x height):1440 x 3200, Pixel density:508 ppi

ROG Phone II ZS660KL

Score

87.2Display size:6.59 inch, Display type:AMOLED, Screen resolution (width x height):1080 x 2340, Pixel density:391 ppi

Comparison for performance

ImageProduct nameReviewperformance

Galaxy S20 Ultra 5G

Score

98.1OS:Android

ROG Phone II ZS660KL

Score

98.9OS:Android

Galaxy S20 Ultra 5G and ROG Phone II ZS660KL, performance comparison by specification sheet

Galaxy S20 Ultra 5GROG Phone II ZS660KL
ImageGalaxy S20 Ultra 5GROG Phone II ZS660KL
MakerSamsungAsus
Release date3/6, 20209, 2019
ColorCosmic Grey/Cosmic BlackMatte Black/Glossy Black
OSAndroidAndroid
Dimensions (width x height x thickness)3.0 inches (76 mm) x 6.6 inches (166.9 mm) x 0.3 inches (8.8 mm)3.1 inches (77.6 mm) x 6.7 inches (171 mm) x 0.4 inches (9.5 mm)
Weight222 oz (222 g)240 oz (240 g)
Display size6.9 inch6.59 inch
Display typeDynamic AMOLED 2XAMOLED
Screen resolution (width x height)1440 x 32001080 x 2340
Pixel density508 ppi391 ppi
Battery capacity5000 mAh6000 mAh
ChipsetExynos 990Qualcomm SM8150 Snapdragon 855+
CPU specs2.73GHz+2.5GHz+2.0GHz×8(OctaCore)2.96GHz+2.42GHz+1.78GHz×8(OctaCore)
RAM size16GB12GB
Storage size512GB1024GB
Rear-camera resolution108 MP48 MP
Front-camera resolution40 MP24 MP

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Color:Ocean Green/Jet Black/Nebula Purple/Pink Mist/Coral Orange/Inspiration Edition, Dimensions (width x height x thickness):2.9 inches (74.3 mm) x 6.2 inches (156.6 mm) x 0.4 inches (9 mm), Weight:185 oz (185 g), Display type:AMOLED, Screen resolution (width x height):1080 x 2340, Pixel density:402 ppi, Display size:6.4 inch, OS:Android

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