79points
65points
Xiaomi Mi 9
64points
67points
Xiaomi Mi A3
Cost-effectiveness winner
vs
vs
144 facts in comparison
Xiaomi Mi 9 vs Xiaomi Mi A3
Xiaomi Mi 9
Xiaomi Mi A3
Why is Xiaomi Mi 9 better than Xiaomi Mi A3?
- 40.91% higher pixel density?
403ppivs286ppi - 13.29% faster CPU speed?
1 x 2.84GHz & 3 x 2.42GHz & 4 x 1.8GHzvs4 x 2 & 4 x 1.8GHz - 4GB more RAM memory?
8GBvs4GB - 2.25x higher resolution?
1080 x 2340pxvs720 x 1560px - 31.03% more megapixels (main camera)?
48MP & 16MP & 12MPvs48 & 8 & 2MP - 6.32% bigger screen size?
6.39"vs6.01" - 2x better video recording quality (main camera)?
2160 x 60fpsvs2160 x 30fps - 2.67x faster downloads?
1200MBits/svs450MBits/s
Why is Xiaomi Mi A3 better than Xiaomi Mi 9?
- 22.12% more battery power?
4030mAhvs3300mAh - 1.6x more megapixels (front camera)?
32MPvs20MP - Has an external memory slot?
- Has a socket for a 3.5 mm audio jack?
- Has a radio?
- 2.8mm narrower?
71.9mmvs74.7mm - 4mm shorter?
153.5mmvs157.5mm
Price comparison
Xiaomi Mi 9
Buy used:
$199.00
| Product | Store | Price | ||
|---|---|---|---|---|
| Xiaomi Redmi 9 EU 64Gb ROM 4Gb Ram Sunse...Xiaomi Redmi 9 EU 64Gb ROM 4Gb Ram Sunset Purple | $161.00 | |||
| Xiaomi Redmi Note 9 Pro 128GB + 6GB RAM,...Xiaomi Redmi Note 9 Pro 128GB + 6GB RAM, 6.67" FHD+ DotDisplay, 64MP AI Quad Camera, Qualcomm Snapdragon 720G LTE Factory Unlocked Smartphone - International Version (Tropical Green) | $267.00 | |||
| Xiaomi Redmi Note 9S 6.67" 48MP Internat...Xiaomi Redmi Note 9S 6.67" 48MP International Global Version (Glacier White, 6GB/128GB) | $231.99 | |||
| Xiaomi Redmi Note 9S 6.67" 48MP Internat...Xiaomi Redmi Note 9S 6.67" 48MP International Global Version (Glacier White, 4GB/64GB) | $199.00 | |||
| Xiaomi Redmi Note 9 DualSim 6.53" 48MP I...Xiaomi Redmi Note 9 DualSim 6.53" 48MP International Global Version (Polar White, 3GB/64GB) | $184.00 | |||
Xiaomi Mi A3
Buy used:
$199.00
| Product | Store | Price | ||
|---|---|---|---|---|
| Xiaomi Redmi 9 64GB, 4GB RAM, 6.53" Full...Xiaomi Redmi 9 64GB, 4GB RAM, 6.53" Full HD + AI Quad Camera, LTE Factory Unlocked Smartphone - International Version (Ocean Green) | $162.99 | |||
| Xiaomi Redmi Note 9S 6.67" 48MP Internat...Xiaomi Redmi Note 9S 6.67" 48MP International Global Version (Interstellar Grey, 4GB/64GB) | $198.50 | |||
| Samsung Galaxy A51 (128GB, 4GB) 6.5", 48...Samsung Galaxy A51 (128GB, 4GB) 6.5", 48MP Quad Camera, Dual SIM GSM Unlocked A515F/DS- Global 4G LTE International Model - Prism Crush Blue | $300.50 | |||
| Xiaomi MI Mix 3 (128GB, 6GB) 6.39" Displ...Xiaomi MI Mix 3 (128GB, 6GB) 6.39" Display, Dual SIM 4G LTE GSM Unlocked Multi-Functional Magnetic Slider Smartphone w/Wireless Charging Pad (Black) | $1,500.00 | |||
| Xiaomi Redmi Note 8 128GB 4GB RAM 48MP F...Xiaomi Redmi Note 8 128GB 4GB RAM 48MP Factory Unlocked Global Version Dual SIM Smartphone (Neptune Blue) | $199.97 | |||
| Xiaomi Mi A3 Global Version 6.088 inch A...Xiaomi Mi A3 Global Version 6.088 inch AMOLED 48MP Triple Rear Camera 4GB 64GB Snapdragon 665 Octa core 4G Smartphone | $219.99 | |||
| Xiaomi Mi A3 Global Version 6.088 inch A...Xiaomi Mi A3 Global Version 6.088 inch AMOLED 48MP Triple Rear Camera 4GB 128GB Snapdragon 665 Octa core 4G Smartphone | $249.99 | |||
Design
The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.
We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
We consider a thinner chassis better because it makes the product more compact and portable. Thinness is a feature highlighted by many manufacturers of mobile devices, but it is essential for a wide range of products.
The width represents the horizontal dimension of the product. We consider a smaller width better because it assures easy maneuverability.
The height represents the vertical dimension of the product. We consider a smaller height better because it assures easy maneuverability.
Volume is the quantity of three-dimensional space enclosed by the product's chassis or, in simpler terms, the space the product occupies.
Display
Pixel density is a measurement of a screen's resolution, expressed as the number of pixels per inch (PPI) on the screen. A higher pixel density translates into more clarity and sharpness for the images rendered on the screen, thus improving the quality of the viewing experience.
Resolution is an essential indicator of a screen's image quality, representing the maximum amount of pixels that can be shown on the screen. The resolution is given as a compound value, comprised of horizontal and vertical pixels.
The bigger the screen size is, the better the user experience.
Damage-resistant glass (such as Corning Gorilla Glass or Asahi Dragontrail Glass) is thin, lightweight, and can withstand high levels of force.
Gorilla Glass is one of the most popular brands of chemically strengthened glass, manufactured by Corning. Several versions have been developed, the newer ones being more durable and providing better damage resistance.
OLED (Organic Light-Emitting Diode) displays are formed of organic materials that emit light. They have higher contrast ratios and wider viewing angles compared to LCDs. AMOLED and POLED are types of OLED displays.
Performance
1.CPU speed
1 x 2.84GHz & 3 x 2.42GHz & 4 x 1.8GHz (Qualcomm Snapdragon 855)
4 x 2GHz & 4 x 1.8GHz (Qualcomm Snapdragon 665)
The CPU speed indicates how many processing cycles per second can be executed by a CPU, considering all of its cores (processing units). It is calculated by adding the clock rates of each core or, in the case of multi-core processors employing different microarchitectures, of each group of cores.
Random-access memory (RAM) is a form of volatile memory used to store working data and machine code currently in use. It is a quick-access, temporary virtual storage that can be read and changed in any order, thus enabling fast data processing.
The device has a standard memory slot (such as an SD or micro SD card slot) that enables you to extend the built-in internal storage with affordable memory modules, or easily retrieve data, such as photographs, from the memory card.
The internal storage refers to the built-in storage space available in a device for system data, apps, and user-generated data. With a large amount of internal storage, you can save more files and apps on your device.
The system on a chip (SoC) has an integrated LTE cellular chip. LTE is capable of downloading at faster speeds than older, 3G technology.
Small semiconductors provide better performance and reduced power consumption. Chipsets with a higher number of transistors, semiconductor components of electronic devices, offer more computational power. A small form factor allows more transistors to fit on a chip, therefore increasing its performance.
Cameras
The number of megapixels determines the resolution of the images captured with the main camera. A higher megapixel count means that the camera is capable of capturing more details. However, the megapixel count is not the only important element determining the quality of an image.
The number of megapixels determines the resolution of the images captured with the front camera. A higher megapixel count means that the front camera is capable of capturing more details, an essential factor for taking high-resolution selfies.
Optical image stabilization uses gyroscopic sensors to detect the vibrations of the camera. The lens adjusts the optical path accordingly, ensuring that any type of motion blur is corrected before the sensor captures the image.
The maximum resolution available for videos shot with the main camera. Although it may be possible to choose among other frame rates, those recordings usually have lower resolutions.
With a wider aperture the sensor can capture more light, helping to avoid blur by enabling a faster shutter speed. It also provides a shallow depth of field, allowing you to blur the background to focus attention on the subject.
A dual-tone flash has LED lights with different color temperatures, delivering a better color balance to photos and videos.
Audio
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
With a standard mini jack socket, you can use the device with most headphones.
A built-in FM radio tuner allows you to listen to most of the live-broadcasted FM radio stations without using the internet.
More microphones result in better sound quality and enable the device to filter out background noise.
Battery
Battery power, or battery capacity, represents the amount of electrical energy that a battery can store. More battery power can be an indication of longer battery life.
The manufacturer offers a branded wireless charging kit. To charge the device, you simply put it down on its charging base.
Fast charging technologies, like Qualcomm’s Quick Charge or MediaTek’s Pump Express, are used to reduce the time it takes to charge a device. For example, with Quick Charge 3.0, the battery can be charged to 50% in just 30 minutes.
The battery is removable and can be replaced by the user if broken.
The ultra power-saving mode, also called low power mode, is an effective way to extend the battery life of the device. Usually, it involves limiting screen brightness and contrast, disabling location services, restricting connectivity, and turning off nonessential apps.
An indicator shows you when the device has low battery.
Features
The download speed is a measurement of the internet connection bandwidth, representing the maximum data transfer rate at which a device can access online content.
802.11ac wireless works on the 5GHz frequency range. It offers higher transfer rates, improved reliability, and improved power consumption. It provides advantages for gaming and HD video streaming.
NFC (near-field communication) allows a device to perform simple wireless transactions.
The device has a fingerprint scanner which identifies the user.
All DLNA-certified products are compatible with one another. When different devices are connected to the same network, data can be transferred easily between them.
Bluetooth is a wireless technology standard that allows data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. Newer versions provide faster data transfers.
Price comparison
Xiaomi Mi 9
Buy used:
$199.00
| Product | Store | Price | ||
|---|---|---|---|---|
| Xiaomi Redmi 9 EU 64Gb ROM 4Gb Ram Sunse...Xiaomi Redmi 9 EU 64Gb ROM 4Gb Ram Sunset Purple | $161.00 | |||
| Xiaomi Redmi Note 9 Pro 128GB + 6GB RAM,...Xiaomi Redmi Note 9 Pro 128GB + 6GB RAM, 6.67" FHD+ DotDisplay, 64MP AI Quad Camera, Qualcomm Snapdragon 720G LTE Factory Unlocked Smartphone - International Version (Tropical Green) | $267.00 | |||
| Xiaomi Redmi Note 9S 6.67" 48MP Internat...Xiaomi Redmi Note 9S 6.67" 48MP International Global Version (Glacier White, 6GB/128GB) | $231.99 | |||
| Xiaomi Redmi Note 9S 6.67" 48MP Internat...Xiaomi Redmi Note 9S 6.67" 48MP International Global Version (Glacier White, 4GB/64GB) | $199.00 | |||
| Xiaomi Redmi Note 9 DualSim 6.53" 48MP I...Xiaomi Redmi Note 9 DualSim 6.53" 48MP International Global Version (Polar White, 3GB/64GB) | $184.00 | |||
Xiaomi Mi A3
Buy used:
$199.00
| Product | Store | Price | ||
|---|---|---|---|---|
| Xiaomi Redmi 9 64GB, 4GB RAM, 6.53" Full...Xiaomi Redmi 9 64GB, 4GB RAM, 6.53" Full HD + AI Quad Camera, LTE Factory Unlocked Smartphone - International Version (Ocean Green) | $162.99 | |||
| Xiaomi Redmi Note 9S 6.67" 48MP Internat...Xiaomi Redmi Note 9S 6.67" 48MP International Global Version (Interstellar Grey, 4GB/64GB) | $198.50 | |||
| Samsung Galaxy A51 (128GB, 4GB) 6.5", 48...Samsung Galaxy A51 (128GB, 4GB) 6.5", 48MP Quad Camera, Dual SIM GSM Unlocked A515F/DS- Global 4G LTE International Model - Prism Crush Blue | $300.50 | |||
| Xiaomi MI Mix 3 (128GB, 6GB) 6.39" Displ...Xiaomi MI Mix 3 (128GB, 6GB) 6.39" Display, Dual SIM 4G LTE GSM Unlocked Multi-Functional Magnetic Slider Smartphone w/Wireless Charging Pad (Black) | $1,500.00 | |||
| Xiaomi Redmi Note 8 128GB 4GB RAM 48MP F...Xiaomi Redmi Note 8 128GB 4GB RAM 48MP Factory Unlocked Global Version Dual SIM Smartphone (Neptune Blue) | $199.97 | |||
| Xiaomi Mi A3 Global Version 6.088 inch A...Xiaomi Mi A3 Global Version 6.088 inch AMOLED 48MP Triple Rear Camera 4GB 64GB Snapdragon 665 Octa core 4G Smartphone | $219.99 | |||
| Xiaomi Mi A3 Global Version 6.088 inch A...Xiaomi Mi A3 Global Version 6.088 inch AMOLED 48MP Triple Rear Camera 4GB 128GB Snapdragon 665 Octa core 4G Smartphone | $249.99 | |||
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