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Xiaomi Redmi Note 9 Pro 128GB vs Xiaomi Mi 9 Pro 512GB: Which is the best?

Created date: 2020-04-29 17:32:19

Xiaomi Redmi Note 9 Pro 128GBXiaomi Mi 9 Pro 512GB
Xiaomi Redmi Note 9 Pro 128GBXiaomi Mi 9 Pro 512GB

Are you having trouble comparing the differences in features and performance of the "Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB", 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.

Xiaomi Redmi Note 9 Pro 128GBXiaomi Mi 9 Pro 512GB
Xiaomi Redmi Note 9 Pro 128GB

Xiaomi Mi 9 Pro 512GB

General rating:

75.3/100

(The 3252th of all smartphones)

78.4/100

(The 3082th of all smartphones)

Holding comfort
58/100
62/100
Weight
48/100
52/100
Screen size
91/100
90/100
Display quality
83/100
84/100
Battery life
83/100
80/100
Processing power
90/100
98/100
Memory capacity
90/100
99/100
Storage capacity
90/100
95/100
Rear camera performance
100/100
97/100
Front camera performance
75/100
81/100

"Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB", performance comparison

"Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB" 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 "Xiaomi Redmi Note 9 Pro 128GB" has a width of 76.7mm, a length of 165.8mm, and a thickness of 8.8mm. Also, the "Xiaomi Mi 9 Pro 512GB" has a width of 74.6mm, a length of 157.2mm, and a thickness of 8.5mm.

Comparing the width and thickness of the body, there isn't much difference between the "Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB" 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 "Xiaomi Redmi Note 9 Pro 128GB" and the "Xiaomi Mi 9 Pro 512GB". 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 "Xiaomi Redmi Note 9 Pro 128GB" and the "Xiaomi Mi 9 Pro 512GB". 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)
Xiaomi Redmi Note 9 Pro 128GB58/10076.7mm x 165.8mm x 8.8mm
Xiaomi Mi 9 Pro 512GB62/10074.6mm x 157.2mm x 8.5mm

"Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB", 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 "Xiaomi Redmi Note 9 Pro 128GB" is about 209.0g, and the weight of the "Xiaomi Mi 9 Pro 512GB" is about 196.0g. Comparing the weight of the two devices, there isn't much difference in weight between the "Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB". 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
Xiaomi Redmi Note 9 Pro 128GB48/100209.0g
Xiaomi Mi 9 Pro 512GB52/100196.0g

"Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB", 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 "Xiaomi Redmi Note 9 Pro 128GB" has a 6.67inch display. Also, the "Xiaomi Mi 9 Pro 512GB" has a 6.39inch display. Comparing the screen size, there is a negligible difference in screen size between the "Xiaomi Redmi Note 9 Pro 128GB" and the "Xiaomi Mi 9 Pro 512GB". 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
Xiaomi Redmi Note 9 Pro 128GB91/1006.67inch
Xiaomi Mi 9 Pro 512GB90/1006.39inch

"Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB", 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 "Xiaomi Redmi Note 9 Pro 128GB" is 1080 x 2400, and pixel density is 394ppi. Also, the resolution on the "Xiaomi Mi 9 Pro 512GB" is 1080 x 2340, and pixel density is 403ppi. Comparing the pixel count, the difference in pixel density between the "Xiaomi Redmi Note 9 Pro 128GB" and the "Xiaomi Mi 9 Pro 512GB" 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
Xiaomi Redmi Note 9 Pro 128GB83/100394ppi
Xiaomi Mi 9 Pro 512GB84/100403ppi

"Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB", 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 "Xiaomi Redmi Note 9 Pro 128GB" is 5020.0mAh, and the "Xiaomi Mi 9 Pro 512GB" is 4000.0mAh. Regarding battery capacity, there is a negligible difference in battery capacity between the "Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB". Since both have roughly equal battery life, you are better off comparing them based on other aspects of performance and functionality.

ScoreBattery capacity
Xiaomi Redmi Note 9 Pro 128GB83/1005020.0mAh
Xiaomi Mi 9 Pro 512GB80/1004000.0mAh

"Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB", 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 "Xiaomi Redmi Note 9 Pro 128GB"'s CPU is a Qualcomm SM7125 Snapdragon 720G, with performance measured at 2.3GHz+1.8GHz×8(8.0-cores). Also, the "Xiaomi Mi 9 Pro 512GB"'s CPU is a Qualcomm SM8150 Snapdragon 855+, with performance measured at 2.96GHz+2.42GHz+1.8GHz×8(8.0-cores). Comparing CPU performance, the "Xiaomi Mi 9 Pro 512GB" has higher specs compared to the "Xiaomi Redmi Note 9 Pro 128GB". For that reason, the "Xiaomi Mi 9 Pro 512GB" allows for more comfortable use of apps, and games that run more smoothly. That's why we recommend the "Xiaomi Mi 9 Pro 512GB" over the "Xiaomi Redmi Note 9 Pro 128GB".

ScoreCPU specs
Xiaomi Redmi Note 9 Pro 128GB90/1002.3GHz+1.8GHz×8(8.0-cores)
Xiaomi Mi 9 Pro 512GB98/1002.96GHz+2.42GHz+1.8GHz×8(8.0-cores)

"Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB", 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 "Xiaomi Redmi Note 9 Pro 128GB" is 6.0GB and the weight of the "Xiaomi Mi 9 Pro 512GB" is 12.0GB. Comparing the devices in terms of RAM, the "Xiaomi Mi 9 Pro 512GB" has more RAM than the "Xiaomi Redmi Note 9 Pro 128GB", with a difference of about 6GB. For that reason the "Xiaomi Mi 9 Pro 512GB" allows for smoother multitasking than the "Xiaomi Redmi Note 9 Pro 128GB", and apps are less likely to crash. In addition the "Xiaomi Mi 9 Pro 512GB" allows for smoother enjoyment of 3D games and VR. For this reason, we recommend the "Xiaomi Mi 9 Pro 512GB".

ScoreRAM size
Xiaomi Redmi Note 9 Pro 128GB90/1006.0GB
Xiaomi Mi 9 Pro 512GB99/10012.0GB

"Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB", 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 "Xiaomi Redmi Note 9 Pro 128GB" is 128.0GB. Also the "Xiaomi Mi 9 Pro 512GB" is 512.0GB. Regarding storage capacity, there is a negligible difference in storage capacity between the "Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB". 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
Xiaomi Redmi Note 9 Pro 128GB90/100128.0GB
Xiaomi Mi 9 Pro 512GB95/100512.0GB

"Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB" 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.

"Xiaomi Redmi Note 9 Pro 128GB" has a 64.0MP main camera. Also, "Xiaomi Mi 9 Pro 512GB" has a 48.0MP main camera. Comparing rear camera performance, the "Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB" 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
Xiaomi Redmi Note 9 Pro 128GB100/10064.0MP
Xiaomi Mi 9 Pro 512GB97/10048.0MP

"Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB", 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.

"Xiaomi Redmi Note 9 Pro 128GB" has an 16.0MP front camera and "Xiaomi Mi 9 Pro 512GB" has an 20.0MP front camera. Comparing rear camera performance, the front camera of the "Xiaomi Mi 9 Pro 512GB" has a higher pixel count than the "Xiaomi Redmi Note 9 Pro 128GB", with a roughly 4MP difference. As a result, the "Xiaomi Mi 9 Pro 512GB" is better able to take high quality selfies than the "Xiaomi Redmi Note 9 Pro 128GB", and the pictures will look cleaner when printed. Therefore, we recommend the "Xiaomi Mi 9 Pro 512GB".

ScoreFront-camera resolution
Xiaomi Redmi Note 9 Pro 128GB75/10016.0MP
Xiaomi Mi 9 Pro 512GB81/10020.0MP

"Xiaomi Redmi Note 9 Pro 128GB" and "Xiaomi Mi 9 Pro 512GB", performance comparison by specification sheet

Xiaomi Redmi Note 9 Pro 128GBXiaomi Mi 9 Pro 512GB
ImageXiaomi Redmi Note 9 Pro 128GBXiaomi Mi 9 Pro 512GB
MakerXiaomiXiaomi
Release date2020-05-302019-09
ColorTropical Green/Glacier White/Interstellar GrayDream White/Titanium Black
OSAndroidAndroid
Dimensions (width x height x thickness)76.7mm x 165.8mm x 8.8mm74.6mm x 157.2mm x 8.5mm
Weight209.0g196.0g
Display size6.67inch6.39inch
Display typeIPS LCDSuper AMOLED
Screen resolution (width x height)1080 x 24001080 x 2340
Pixel density394ppi403ppi
Battery capacity5020.0mAh4000.0mAh
ChipsetQualcomm SM7125 Snapdragon 720GQualcomm SM8150 Snapdragon 855+
CPU specs2.3GHz+1.8GHz×8(8.0-cores)2.96GHz+2.42GHz+1.8GHz×8(8.0-cores)
RAM size6.0GB12.0GB
Storage size128.0GB512.0GB
Rear-camera resolution64.0MP48.0MP
Front-camera resolution16.0MP20.0MP

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