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Should you buy Xiaomi Mi 9 SE 128GB or Xiaomi Redmi S2 (Redmi Y2) 64GB? Compare the differences in functions and specifications/performances thoroughly

Created date: 2019-03-19 05:29:00, Updated date: 2020-04-16 21:42:46

Xiaomi Mi 9 SE 128GBXiaomi Redmi S2 (Redmi Y2) 64GB
Xiaomi Mi 9 SE 128GBXiaomi Redmi S2 (Redmi Y2) 64GB

Are you having trouble comparing the differences in features and performance of the "Xiaomi Mi 9 SE 128GB" and "Xiaomi Redmi S2 (Redmi Y2) 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.

Xiaomi Mi 9 SE 128GBXiaomi Redmi S2 (Redmi Y2) 64GB
Xiaomi Mi 9 SE 128GB

Xiaomi Redmi S2 (Redmi Y2) 64GB

General rating:
Portabilityrating-image3.6
70.5mm x 147.5mm x 7.5mm
rating-image2.9
77.3mm x 160.7mm x 8.1mm
Weightrating-image3.4
155.0g
rating-image3.1
170.0g
Size of screenrating-image4.5
5.97inch
rating-image4.5
5.99inch
Screen clarityrating-image4.3
431ppi
rating-image2.7
268ppi
Battery durationrating-image3.3
3070.0mAh
rating-image3.3
3080.0mAh
Processing capabilityrating-image4.5
2.3GHz+1.7GHz×8(8.0-cores)
rating-image4.5
2.0GHz×8(8.0-cores)
Memory capacityrating-image4.5
6.0GB
rating-image3.5
4.0GB
Storage capacityrating-image4.5
128.0GB
rating-image3.4
64.0GB
Rear camera functionrating-image4.9
48.0MP
rating-image3.0
12.0MP
Front camera functionrating-image4.1
20.0MP
rating-image3.8
16.0MP

Compare Performance and Usability

Size comparison of "Xiaomi Mi 9 SE 128GB" and "Xiaomi Redmi S2 (Redmi Y2) 64GB". 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 "Xiaomi Mi 9 SE 128GB" is 70.5mm wide, 147.5mm tall, and 7.5mm thick. The "Xiaomi Redmi S2 (Redmi Y2) 64GB" is 77.3mm tall, 160.7mm wide, and 8.1mm thick.

The "Xiaomi Mi 9 SE 128GB" is also more compact than the "Xiaomi Redmi S2 (Redmi Y2) 64GB" in terms of the thickness of the devices. The "Xiaomi Mi 9 SE 128GB" is easier than the "Xiaomi Redmi S2 (Redmi Y2) 64GB" to hold with one hand, and you are less likely to accidentally drop it. If you're looking for a smartphone that fits nicely in your hand and can be gripped firmly, we recommend buying the "Xiaomi Mi 9 SE 128GB" rather than the "Xiaomi Redmi S2 (Redmi Y2) 64GB".

Comparing the width and height of the main unit, the "Xiaomi Mi 9 SE 128GB" is smaller and more compact than the "Xiaomi Redmi S2 (Redmi Y2) 64GB". As a result, the "Xiaomi Mi 9 SE 128GB" is easier to operate with one hand and it is more portable without getting in your way than the "Xiaomi Redmi S2 (Redmi Y2) 64GB". Therefore, the "Xiaomi Mi 9 SE 128GB" is recommended.

Comparing the overall size of the main unit, the "Xiaomi Mi 9 SE 128GB" is smaller than the "Xiaomi Redmi S2 (Redmi Y2) 64GB". As a result, it is easier to use the "Xiaomi Mi 9 SE 128GB" with one hand compared to the "Xiaomi Redmi S2 (Redmi Y2) 64GB", and its size makes it more comfortable to carry around. For this reason, the "Xiaomi Mi 9 SE 128GB" is recommended.

ScoreDimensions (width x height x thickness)
Xiaomi Mi 9 SE 128GB71/10070.5mm x 147.5mm x 7.5mm
Xiaomi Redmi S2 (Redmi Y2) 64GB58/10077.3mm x 160.7mm x 8.1mm

Which one is easier to hold, "Xiaomi Mi 9 SE 128GB" or "Xiaomi Redmi S2 (Redmi Y2) 64GB"? 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 "Xiaomi Mi 9 SE 128GB" weighs 155.0g. The "Xiaomi Redmi S2 (Redmi Y2) 64GB" clocks in at 170.0g. Comparing the weight of the main unit, the "Xiaomi Mi 9 SE 128GB" is a lighter phone than the "Xiaomi Redmi S2 (Redmi Y2) 64GB", with a difference of approximately 15g. Therefore, there is less strain on your fingers and wrists even when you use your phone for a long time on the "Xiaomi Mi 9 SE 128GB" compared to the "Xiaomi Redmi S2 (Redmi Y2) 64GB". For this reason, the "Xiaomi Mi 9 SE 128GB" is recommended.

ScoreWeight
Xiaomi Mi 9 SE 128GB68/100155.0g
Xiaomi Redmi S2 (Redmi Y2) 64GB62/100170.0g

Which is better in terms of display, "Xiaomi Mi 9 SE 128GB" or "Xiaomi Redmi S2 (Redmi Y2) 64GB"?

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 "Xiaomi Mi 9 SE 128GB" is 5.97inch, and 5.99inch on the "Xiaomi Redmi S2 (Redmi Y2) 64GB". The screens of the "Xiaomi Mi 9 SE 128GB" and "Xiaomi Redmi S2 (Redmi Y2) 64GB" are roughly the same size, and so the ease of pressing app buttons are the same on both devices. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreDisplay size
Xiaomi Mi 9 SE 128GB89/1005.97inch
Xiaomi Redmi S2 (Redmi Y2) 64GB89/1005.99inch

Which one has a better display, "Xiaomi Mi 9 SE 128GB" or "Xiaomi Redmi S2 (Redmi Y2) 64GB"?

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 "Xiaomi Mi 9 SE 128GB" has a 1080 x 2340 resolution and a pixel density of 431ppi. The "Xiaomi Redmi S2 (Redmi Y2) 64GB", on the other hand, has a screen resolution of 720 x 1440 and a pixel density of 268ppi. Comparing the screen definition, the "Xiaomi Mi 9 SE 128GB" has a much higher pixel density than the "Xiaomi Redmi S2 (Redmi Y2) 64GB", with a difference of about 163ppi. The screen on the "Xiaomi Mi 9 SE 128GB" is clear and crisp, and puts less strain on the eyes than that of the "Xiaomi Redmi S2 (Redmi Y2) 64GB". If you want to choose a smartphone that is gentle on your eyes with a display that shows text and images clearly, we recommend that you buy the "Xiaomi Mi 9 SE 128GB" rather than the "Xiaomi Redmi S2 (Redmi Y2) 64GB".

ScorePixel density
Xiaomi Mi 9 SE 128GB85/100431ppi
Xiaomi Redmi S2 (Redmi Y2) 64GB53/100268ppi

How is the battery duration of "Xiaomi Mi 9 SE 128GB" different from that of "Xiaomi Redmi S2 (Redmi Y2) 64GB" ? 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 "Xiaomi Mi 9 SE 128GB" has a battery capacity of 3070.0mAh, while the "Xiaomi Redmi S2 (Redmi Y2) 64GB" has a 3080.0mAh battery. The batteries of both the "Xiaomi Mi 9 SE 128GB" and "Xiaomi Redmi S2 (Redmi Y2) 64GB" perform to the same extent. There is also no difference in the battery capacities of the "Xiaomi Mi 9 SE 128GB" and the "Xiaomi Redmi S2 (Redmi Y2) 64GB". Since their battery life is practically identical, it would be better to compare them based on other aspects of performance and function.

ScoreBattery capacity
Xiaomi Mi 9 SE 128GB66/1003070.0mAh
Xiaomi Redmi S2 (Redmi Y2) 64GB66/1003080.0mAh

Which is better in terms of CPU function, "Xiaomi Mi 9 SE 128GB" or "Xiaomi Redmi S2 (Redmi Y2) 64GB"?

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 "Xiaomi Mi 9 SE 128GB" is equipped with a Qualcomm SDM712 Snapdragon 712 processor, and its performance speed is 2.3GHz+1.7GHz×8(8.0-cores). The "Xiaomi Redmi S2 (Redmi Y2) 64GB" uses an Qualcomm MSM8953 Snapdragon 625 CPU that performs at a speed of 2.0GHz×8(8.0-cores). There is also no real discrepancy between the CPU performances of the "Xiaomi Mi 9 SE 128GB" and "Xiaomi Redmi S2 (Redmi Y2) 64GB". Because of this, both phones will feel practically identical in terms of smoothness when running apps and ease of game play. This is why it is better to compare them based on other aspects of performance and function.

ScoreCPU specs
Xiaomi Mi 9 SE 128GB90/1002.3GHz+1.7GHz×8(8.0-cores)
Xiaomi Redmi S2 (Redmi Y2) 64GB89/1002.0GHz×8(8.0-cores)

How is "Xiaomi Mi 9 SE 128GB" different from "Xiaomi Redmi S2 (Redmi Y2) 64GB" 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 "Xiaomi Mi 9 SE 128GB" has 6.0GB of memory. The "Xiaomi Redmi S2 (Redmi Y2) 64GB", on the other hand, has 4.0GB. As for memory performance, the "Xiaomi Mi 9 SE 128GB" has a larger memory capacity than the "Xiaomi Redmi S2 (Redmi Y2) 64GB", with a difference of about 2GB. The "Xiaomi Mi 9 SE 128GB" has better multitasking, less crashing, and runs 3D games and VR video better than the "Xiaomi Redmi S2 (Redmi Y2) 64GB". 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 "Xiaomi Mi 9 SE 128GB" rather than the "Xiaomi Redmi S2 (Redmi Y2) 64GB".

ScoreRAM size
Xiaomi Mi 9 SE 128GB90/1006.0GB
Xiaomi Redmi S2 (Redmi Y2) 64GB70/1004.0GB

Which has a better storage capacity, "Xiaomi Mi 9 SE 128GB" or "Xiaomi Redmi S2 (Redmi Y2) 64GB"?

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 "Xiaomi Mi 9 SE 128GB" has 128.0GB of storage, while the "Xiaomi Redmi S2 (Redmi Y2) 64GB" has 64.0GB. In terms of ROM and data storage, the "Xiaomi Mi 9 SE 128GB" has a much larger capacity than the "Xiaomi Redmi S2 (Redmi Y2) 64GB", with a difference of about 64GB. The "Xiaomi Mi 9 SE 128GB" can save more photos and keep more apps installed than the "Xiaomi Redmi S2 (Redmi Y2) 64GB". If you're searching for a smartphone that can store more data, we recommended that you buy the "Xiaomi Mi 9 SE 128GB" rather than the "Xiaomi Redmi S2 (Redmi Y2) 64GB".

ScoreStorage size
Xiaomi Mi 9 SE 128GB90/100128.0GB
Xiaomi Redmi S2 (Redmi Y2) 64GB67/10064.0GB

Compare the rear cameras of "Xiaomi Mi 9 SE 128GB" and "Xiaomi Redmi S2 (Redmi Y2) 64GB". 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 "Xiaomi Mi 9 SE 128GB" has 48.0MP. The "Xiaomi Redmi S2 (Redmi Y2) 64GB" has 12.0MP. The rear-facing camera of the "Xiaomi Mi 9 SE 128GB" also has a higher pixel count than the "Xiaomi Redmi S2 (Redmi Y2) 64GB", with a difference of about 36MP. The "Xiaomi Mi 9 SE 128GB" is more capable than the "Xiaomi Redmi S2 (Redmi Y2) 64GB" 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 "Xiaomi Mi 9 SE 128GB" rather than the "Xiaomi Redmi S2 (Redmi Y2) 64GB".

ScoreRear-camera resolution
Xiaomi Mi 9 SE 128GB97/10048.0MP
Xiaomi Redmi S2 (Redmi Y2) 64GB59/10012.0MP

Which has a front camera with better picture quality, "Xiaomi Mi 9 SE 128GB" or "Xiaomi Redmi S2 (Redmi Y2) 64GB"?

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 "Xiaomi Mi 9 SE 128GB" has a resolution of 20.0MP. The "Xiaomi Redmi S2 (Redmi Y2) 64GB"'s has 16.0MP. Comparing the front-facing camera performance, the number of pixels of the front-facing camera on the "Xiaomi Mi 9 SE 128GB" is higher than the "Xiaomi Redmi S2 (Redmi Y2) 64GB", with a difference of approximately 4MP. For this reason, it is possible to take higher quality selfies and make clear prints with the "Xiaomi Mi 9 SE 128GB" than the "Xiaomi Redmi S2 (Redmi Y2) 64GB". Therefore, the "Xiaomi Mi 9 SE 128GB" is recommended.

ScoreFront-camera resolution
Xiaomi Mi 9 SE 128GB81/10020.0MP
Xiaomi Redmi S2 (Redmi Y2) 64GB75/10016.0MP

Compare Performance Specs

Xiaomi Mi 9 SE 128GBXiaomi Redmi S2 (Redmi Y2) 64GB
ImageXiaomi Mi 9 SE 128GBXiaomi Redmi S2 (Redmi Y2) 64GB
MakerXiaomiXiaomi
Release date2019-032018-05
ColorViolet/Blue/GrayGray/Gold/Rose Gold/Mesmerising Blue/Stunning Black
OSAndroidAndroid
Dimensions (width x height x thickness)70.5mm x 147.5mm x 7.5mm77.3mm x 160.7mm x 8.1mm
Weight155.0g170.0g
Display size5.97inch5.99inch
Display typeSuper AMOLEDIPS LCD
Screen resolution (width x height)1080 x 2340720 x 1440
Pixel density431ppi268ppi
Battery capacity3070.0mAh3080.0mAh
ChipsetQualcomm SDM712 Snapdragon 712Qualcomm MSM8953 Snapdragon 625
CPU specs2.3GHz+1.7GHz×8(8.0-cores)2.0GHz×8(8.0-cores)
RAM size6.0GB4.0GB
Storage size128.0GB64.0GB
Rear-camera resolution48.0MP12.0MP
Front-camera resolution20.0MP16.0MP

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