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Compare: Samsung Galaxy M31 Vs Redmi Note 9 Pro

Here you can compare Samsung Galaxy M31 and Xiaomi Redmi Note 9 Pro. The Samsung Galaxy M31 starts at $ 289.89 for the base model. And this makes it a direct competitor to the Redmi Note 9 Pro that arrived back in February as a successor to the M30 and M30s. So, which one’s a better buy under $ 300? Let’s check out the same in our detailed Samsung Galaxy M31 vs Xiaomi Redmi Note 9 Pro comparison involving key specifications, performance, design, camera, multimedia, battery life, and connectivity.

Pros and Cons

Samsung Galaxy M31Redmi Note 9 Pro
Fast fingerprint sensor and face unlock6.67 inch LCD IPS display
Best AMOLED displayCorning Gorilla glass 5 protection
Powerful 6000 mAh batteryType-C, Infrared
Moderate fast charging speedHeavy and Bulky design
Low light camera performanceNo AMOLED Display support

Key Specification

Samsung Galaxy M31Redmi Note 9 Pro
Released2020, March2020, March
ChipsetSamsung Exynos 9 Octa 9611Qualcomm Snapdragon 720G
Display6.4 inches6.67 inches
Memory6 GB4 GB
Storage64 GB64 GB
Camera64+8+5+5 MP48+8+5+2 MP
Fingerprint Sensor PositionRearSide


Samsung Galaxy M31Redmi Note 9 Pro
Dimensions159.2 x 75.1 x 8.9 mm165.7 x 76.6 x 8.8 mm
Weight191 grams209 grams
Screen Size6.4 inches6.67 inches
Screen Resolution1080 x 2340 pixels1080 x 2400 pixels
ColorBlack, BlueAurora Blue, Glacier White, Interstellar Black
Display TypeSuper AMOLEDIPS LCD
Build MaterialPlasticGorilla Glass

When comparing the two phones in terms of design, the Redmi Note 9 Pro is an instant winner. The Redmi Note 9 Pro has Gorilla Glass 5 protection both in the back and front while the Samsung Galaxy M31 only has Gorilla Glass 3 in the front and the overall plastic body is a disappointment.  The Redmi Note 9 Pro is 20 grams heavier than M31, so it is to be noted for those who prefer a lighter phone. These features of the Redmi Note 9 Pro give it a luxurious and premium look.

Display-wise the Samsung Galaxy M31 features a 6.4 inches Super AMOLED display while the Note 9 Pro has a bigger 6.67 inch IPS LCD, both these panels are regular 60-hertz ones. With the AMOLED nature of the display, one can take advantage of features like always-on display and even dark mode looks pleasing on it, however, it’s worth mentioning that Redmi Note 9 Pro’s display is a good too. Hence becoming a very close second and since it is the bigger of the two one might prefer it for gaming and media consumption as well.


Samsung Galaxy M31Redmi Note 9 Pro
ProcessorOcta core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)Octa core (2.3 GHz, Dual core, Kryo 465 + 1.8 GHz, Hexa Core, Kryo 465)
GPUMali-G72 MP3Adreno 618
Internal storage64 GB64 GB
Storage expansionUp to 512 GBUp to 512 GB
OSAndroid v10 (Q)Android v10 (Q)

The Redmi Note 9 Pro comes with 4 GB RAM while Samsung Galaxy M31 has 6 Gb Ram. Both devices have 64GB internal storage and offer storage expansion. They both offer Android 10, although they have different UIs and overall experience differs.

The key difference is that the Redmi Note 9 Pro comes packing a Snapdragon 720g chipset (gaming-centric) while the Samsung Galaxy M31 comes with Exynos 9611 chipset. Also, the former comes with Adreno 680 GPU and the latter has the aging Mali-G72 MP3.


Samsung Galaxy M31Redmi Note 9 Pro
Rear64+8+5+5 MP48+8+5+2 MP
Front32 MP f/2.0 Primary Camera16 MP Primary Camera
Video recording3840×2160 @ 30 fps, 1920×1080 @ 30 fps, 1280×720 @ 240 fps3840×2160 @ 30 fps, 1920×1080 @ 60 fps, 1280×720 @ 960 fps
Image Resolution9000 x 7000 Pixels8000 x 6000 Pixels

The Redmi Note 9 Pro features a quad-camera setup that has 48 megapixels primary camera complemented by 8+5+2 megapixel sensors at the back while the front is fitted with a 16-megapixel camera.

The Samsung Galaxy M13 also features a quad-camera setup but has a bigger 68 megapixels primary camera accompanied with an 8+5+5 megapixel setup. The front sports a 32-megapixel snapper. Both devices include ultra-wide, wide, depth, and macro sensor options.


Samsung Galaxy M31Redmi Note 9 Pro
Headphone jack3.5 mm3.5 mm
FM RadioYes
Audio FeaturesDolby Atmos

Battery Life

Samsung Galaxy M31Redmi Note 9 Pro
Capacity6000 mAh5020 mAh
Quick ChargingFast, 15WFast, 18W
User ReplaceableNoNo

The Samsung Galaxy M31 comes packed with a beast 6000 mAh battery which supports 15W fast charging. The Redmi Note 9 Pro, on the other hand, includes a 5020 mAh battery which supports for 18W fast charging.


Samsung Galaxy M31Redmi Note 9 Pro
Network Support4G (supports Indian bands), 3G, 2G4G (supports Indian bands), 3G, 2G
WifiWi-Fi 802.11, ac/b/g/n/n 5GHzWi-Fi 802.11, ac/b/g/n, MIMO
SensorsLight sensor, Proximity sensor, Accelerometer, GyroscopeLight sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Which is Better?

The Redmi Note 9 Pro reigns supreme over M31 in the matter of design, performance, and unique features. The Samsung Galaxy M31 takes the cake when speaking of display, camera, videos, and battery. At this price point, the Samsung Galaxy will appear to be a better choice.

But it is to be kept in my mind that these phones seem to cater to completely different audiences. The Redmi Note 9 Pro is a more performance-centric product with great design while the Samsung Galaxy M31 is best suited for someone more into multimedia consumption.

The final decision will rest on the buyers’ preference and the main purpose of buying the phone.

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