Xiaomi Mi 9 SE vs Redmi Note 12 Pro 4G: A Head-to-Head Showdown

Choosing a new smartphone can be overwhelming, especially with so many options from Xiaomi. The Mi 9 SE was a compact powerhouse, while the Redmi Note 12 Pro 4G offers modern features and fast charging. Let's break down these two devices to see which one reigns supreme.
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🏆 Quick Verdict

The Redmi Note 12 Pro 4G takes the win thanks to its significantly faster charging, more modern chipset, and improved overall feature set. While the Mi 9 SE boasts impressive battery life, the Note 12 Pro's advancements make it the better choice for most users.

PHONES
Phone Names Xiaomi Mi 9 SE Xiaomi Redmi Note 12 Pro 4G
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 3, 4, 5, 7, 8, 20, 38, 40 - Global1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41, 66
SpeedHSPA, LTEHSPA, LTE
TechnologyGSM / CDMA / HSPA / LTEGSM / HSPA / LTE
 1, 3, 5, 7, 8, 34, 38, 39, 40, 41 - China-
Launch
Announced2019, February 20. Released 2019, March2023, March 03
StatusDiscontinuedAvailable. Released 2023, April 11
Body
BuildGlass front (Gorilla Glass 5), glass back, aluminum frame-
Dimensions147.5 x 70.5 x 7.5 mm (5.81 x 2.78 x 0.30 in)164.2 x 76.1 x 8.1 mm (6.46 x 3.00 x 0.32 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight155 g (5.47 oz)201.8 g (7.13 oz)
Display
ProtectionCorning Gorilla Glass 5-
Resolution1080 x 2340 pixels, 19.5:9 ratio (~432 ppi density)1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
Size5.97 inches, 87.5 cm2 (~84.1% screen-to-body ratio)6.67 inches, 107.4 cm2 (~86.0% screen-to-body ratio)
TypeSuper AMOLED, HDRAMOLED, 120Hz, Dolby Vision, 700 nits (HBM), 1100 nits (peak)
Platform
CPUOcta-core (2x2.3 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
ChipsetQualcomm SDM712 Snapdragon 712 (10 nm)Qualcomm SM7150 Snapdragon 732G (8 nm)
GPUAdreno 616Adreno 618
OSAndroid 9.0 (Pie), upgradable to Android 11, MIUI 12.5Android 11, MIUI 13
Memory
Card slotNomicroSDXC (uses shared SIM slot)
Internal64GB 6GB RAM, 128GB 6GB RAM128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
 UFS 2.0UFS 2.2
Main Camera
FeaturesDual-LED flash, HDR, panoramaLED flash, HDR, panorama
Quad-108 MP, f/1.9, (wide), 1/1.52", 0.7µm, PDAF 8 MP, 120˚, (ultrawide) 2 MP (macro) Auxiliary lens
Triple48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.4, (telephoto), 1/4.0", 1.12µm, PDAF 13 MP, f/2.4, (ultrawide), 1/3.1", 1.12µm-
Video4K@30fps, 1080p@30/60/120fps, 720p@960fps, gyro-EIS4K@30fps, 1080p@30/60fps
Selfie camera
FeaturesHDR-
Single20 MP, f/2.0, (wide), 1/3", 0.9µm16 MP, f/2.4, (wide)
Video1080p@30fps1080p@30fps
Sound
3.5mm jack NoYes
35mm jackNoYes
Loudspeaker YesYes, with stereo speakers
Comms
Bluetooth5.0, A2DP, LE, aptX HD5.0, A2DP, LE
Infrared portYesYes
NFCYesYes (market/region dependent)
PositioningGPS, GLONASS, GALILEO, BDSGPS, GLONASS, GALILEO, BDS
RadioNoUnspecified
USBUSB Type-C 2.0, OTGUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNAWi-Fi 802.11 a/b/g/n/ac, dual-band
Features
SensorsFingerprint (under display, optical), accelerometer, gyro, compassFingerprint (side-mounted), accelerometer, gyro, compass
 Virtual proximity sensing-
Battery
Charging18W wired67W wired
TypeLi-Po 3070 mAh, non-removableLi-Po 5000 mAh
Misc
ColorsViolet, Blue, GrayStar Blue, Graphite Gray, Polar White, Ice blue
ModelsM1903F2G‎2209116AG, 2209116AG
PriceAbout 460 EURAbout 150 EUR
SAR1.39 W/kg (head)     1.39 W/kg (body)-
SAR EU1.19 W/kg (head)     1.17 W/kg (body)-
Tests
Audio quality Noise -93.5dB / Crosstalk -93.5dB-
Battery life Endurance rating 73h -
Camera Photo / Video-
Display Contrast ratio: Infinite (nominal)-
Loudspeaker Voice 86dB / Noise 79dB / Ring 87dB -
Performance AnTuTu: 180057 (v7) GeekBench: 6017 (v4.4) GFXBench: 14fps (ES 3.1 onscreen)-

Xiaomi Mi 9 SE

  • Compact and lightweight
  • Excellent battery life
  • Smooth performance for everyday tasks
  • Good value (if found used)

  • Older chipset
  • Slower charging
  • Outdated design
  • Limited software updates

Xiaomi Redmi Note 12 Pro 4G

  • Fast 67W charging
  • More powerful Snapdragon 732G chipset
  • Modern design
  • Likely better camera system
  • More frequent software updates

  • Larger size
  • Potentially less impressive battery life than Mi 9 SE (though charging compensates)
  • May lack some premium features

Display Comparison

The Redmi Note 12 Pro 4G likely features a more modern AMOLED display with vibrant colors and deeper blacks, a significant upgrade over the Mi 9 SE's LCD. While the Mi 9 SE's 637 nits brightness is respectable, the Note 12 Pro's display will likely offer better outdoor visibility and a more immersive viewing experience. Resolution and refresh rate are also likely higher on the Note 12 Pro.

Camera Comparison

While both phones offer capable cameras, the Redmi Note 12 Pro 4G likely has a more versatile camera system with a higher resolution main sensor and potentially improved image processing. Expect better low-light performance and more detailed photos from the Note 12 Pro. The Mi 9 SE's camera is still good, but it shows its age.

Performance

The Snapdragon 732G in the Redmi Note 12 Pro 4G provides a noticeable performance boost over the Mi 9 SE's Snapdragon 712. Expect smoother multitasking, faster app loading times, and better gaming performance on the Note 12 Pro. The 8nm process also contributes to improved efficiency.

Battery Life

The Mi 9 SE's endurance rating of 73h is exceptional, suggesting incredible battery life. However, the Redmi Note 12 Pro 4G's 67W charging capability more than compensates for any potential battery life difference. You'll be able to top up the Note 12 Pro incredibly quickly, minimizing downtime.

Buying Guide

The Xiaomi Mi 9 SE is ideal for users prioritizing compact size, excellent battery life, and a smooth, albeit older, user experience. The Redmi Note 12 Pro 4G is perfect for those seeking fast charging, a more powerful processor, and a modern design, even if it's slightly larger.

Frequently Asked Questions

❓ Is the Mi 9 SE still worth buying?
If you prioritize a compact size and exceptional battery life and can find it at a very low price, the Mi 9 SE can still be a decent option. However, be aware of its age and limited software support.
❓ Which phone has better gaming performance?
The Redmi Note 12 Pro 4G's Snapdragon 732G offers significantly better gaming performance than the Mi 9 SE's Snapdragon 712.