Xiaomi Redmi 9T vs Xiaomi Redmi A3x - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 18, 2021 May 24, 2024
Release Year 2021 2024

Physical

Volume 120.44 cm³ 106.65 cm³
Screen Size to Weight Ratio 3.3 "/g 3.48 "/g
Weight 198 g 193 g
Height 162.3 mm 168.4 mm
Width 77.3 mm 76.3 mm
Thickness 9.6 mm 8.3 mm
Foldable Design No No
Available Colors
  • Carbon Gray
  • Ocean Green
  • Sunrise Orange
  • Twilight Blue
  • Midnight Black
  • Olive Green
  • Moonlight White (Starry White)
  • Aurora Green (Ocean Green)

Display

Screen Size 6.53 " 6.71 "
Resolution 1080 x 2340 720 x 1650
Aspect Ratio 19.5:9 21:9
Screen-to-Body Ratio 83.4 % 82.9 %
Pixel Density 395 PPI 268 PPI
Refresh Rate N/A 90 Hz
Typical Brightness 400 nits 500 nits
HBM Brightness N/A N/A
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 140.71 mAh/in² 111.05 mAh/in²
Battery Density 49.82 mAh/cm³ 46.88 mAh/cm³
Battery Capacity 6000 mAh 5000 mAh
NFC Support Yes No
Chipset Qualcomm SM6115 Snapdragon 662 (11 nm) Unisoc T603 (22 nm)
CPU Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Octa-core 1.8 GHz
GPU Adreno 610 8

Connectivity

USB Version 2.0 N/A
OTG Support 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 2.0, OTG USB Type-C

Software

Operating System Android Android
Initial OS Version 10 14
Maximum OS Version 16

Comparison Summary

Smartphone Comparison: Xiaomi Redmi 9T vs. Xiaomi Redmi A3x

1. Specifications Comparison

FeatureXiaomi Redmi 9TXiaomi Redmi A3xPractical Impact
Design
Dimensions162.3 × 77.3 × 9.6 mm168.4 × 76.3 × 8.3 mmA3x is taller and thinner; 9T is slightly wider and thicker. The A3x will feel a bit more slender in the hand.
Weight198g193gA3x is slightly lighter, may be noticeable during extended use.
Display
Size6.53"6.71"A3x offers a marginally larger screen, better for multimedia consumption.
Resolution1080x2340720x16509T has a much sharper display; text and images will appear clearer.
PPI3952689T's higher pixel density will result in noticeably crisper visuals.
TechnologyIPS LCDIPS LCDBoth offer similar viewing angles and color reproduction, no difference here.
Refresh Rate60Hz90HzA3x has smoother scrolling and animations.
Brightness0 nits0 nitsNo difference in brightness, both have no specification provided.
Performance
ChipsetQualcomm Snapdragon 662 (11 nm)Unisoc T603 (22 nm)A3x has a higher Antutu score, suggesting better app loading and overall responsiveness.
Antutu Score174,500239,000A3x has better benchmark performance, likely offering a smoother day-to-day experience.
GPUAdreno 610Mali-G57 MP1Different GPUs. A3x shows better benchmark performance.
Camera
Main Camera48MP, f/1.79, 1/2", 0.80 µm8MP, f/2.2, unkown sensor, unknown pixel size9T has significantly higher resolution main camera and a wider aperture, meaning better low-light performance and more detail in photos.
Selfie Camera8MP, f/2.0, 1.12 µm5MP, f/2.2, unknown pixel size9T takes sharper selfies, with slightly better low-light due to the wider aperture.
Wide Angle8MP, f/2.2, 1/4", 1.12 µmNot Available9T has a wide-angle lens for more versatile photography.
Depth Sensor2MP, f/2.4Not Available9T has a dedicated depth sensor, allows for better portrait mode photos.
Macro Lens2MP, f/2.4Not Available9T has a macro lens for taking close-up shots.
Video1080p@30fps, slow-motion 120fps1080p@30fps, slow-motion 30fpsSimilar video quality; 9T offers better slow motion capabilities
Battery
Capacity6000mAh5000mAh9T has a much larger battery, providing longer usage between charges.
Charging18W fast charging10W fast charging9T charges faster.
FeaturesReverse charging, 22.5W charger in boxNon-removable9T can charge other devices, has faster charger, it has features the A3x does not have.
Software
OSAndroid 10Android 14A3x runs on a newer Android version, it will likely receive more updates and features.
Connectivity
Wi-Fi802.11ac, dual-band, Wi-Fi Direct802.11ac, Wi-Fi Direct9T supports dual-band WiFi and Wi-Fi display, potentially offering better connection stability.
Bluetooth5.0 LE4.2 LE, EDR, SBC, AAC9T has a newer Bluetooth version. A3x has more audio codecs for Bluetooth audio, which is useful for connecting to wireless audio devices
GPSGPS, A-GPS, GLONASS, Beidou, GalileoGPS, A-GPS, GLONASS, Beidou9T has more satellite systems for slightly better location accuracy.
Storage
Internal64 GB or 128 GB64 GB or 128 GBBoth offer the same storage options, sufficient for most users.
RAM4 GB or 6 GB3 GB or 4 GB9T has more RAM, especially in the higher spec, which enables better multitasking and app performance.
ExpandableNoNoNeither phone offers expandable storage, so users will need to choose adequate internal storage.
Audio
QualityHi-Res Audio, Stereo SpeakersBasic Audio9T provides a richer and more immersive audio experience due to better audio hardware.
Security
Featuresside-mounted fingerprint sensorside-mounted fingerprint sensorBoth offer similar basic fingerprint sensors for device security.
Build
Screen ProtectionCorning Gorilla Glass 3Corning Gorilla Glass 3Both provide the same level of screen protection from scratches and minor impacts.
Sensors
SensorsFingerprint, Accelerometer, Compass, ProximityAccelerometer, Proximity9T has more sensors, which may be useful for some applications.

2. Key Differences Analysis

Xiaomi Redmi 9T Advantages:

  • Significantly better display: Higher resolution and PPI provide sharper visuals.
  • Superior camera system: Higher resolution main camera, wide-angle lens, and depth sensor offer greater versatility.
  • Much larger battery: 6000mAh vs 5000mAh, offering significantly longer battery life.
  • Faster charging: 18W charging is faster than the A3x's 10W charging.
  • Better audio: Stereo speakers and Hi-Res audio support
  • More sensors: Compass and fingerprint sensor.
  • Reverse charging: Useful for charging other devices.
  • Better Wi-Fi: Dual band and Wi-Fi display features.

Xiaomi Redmi A3x Advantages:

  • Newer Android version: Comes with Android 14 out of the box, meaning better software support for the future.
  • Slightly smoother display: 90Hz refresh rate offers a more fluid experience, mainly for scrolling and animation.
  • Lighter and thinner: Easier to handle and more pocketable, if these are important factors.
  • Better benchmark performance Faster app loading and smoother operation.

Trade-offs:

  • The Redmi 9T offers a superior camera, battery and audio experience but runs on an older Android version. The Redmi A3x offers a smoother display and a newer Android version but is otherwise inferior in other key areas such as camera and battery.
  • Both phones lack expandable storage, so choosing the correct internal storage is important.

3. User Profiles & Recommendations

Xiaomi Redmi 9T:

  • Ideal for: Users who prioritize a high-quality display, versatile camera system, and long battery life.
  • Use cases:
    • Frequent media consumption (video streaming, social media)
    • Photography enthusiasts who want versatile shooting options.
    • Users who need their phone to last all day on a single charge.
    • Users who value better audio for multimedia consumption.
  • Price-to-value: Offers excellent value for its camera and battery if you are happy with older software.

Xiaomi Redmi A3x:

  • Ideal for: Users who prioritize a newer Android version, smoother display, and lightweight design.
  • Use cases:
    • Users who prefer simple smartphone experiences with newer software.
    • Users who want a light and thin phone for easy portability.
    • Users who prefer a budget-friendly smartphone with a more recent OS.
  • Price-to-value: Offers a more modern Android experience, albeit with compromises in other areas.

4. Decision Framework

Key Questions for Buyers:

  1. How important is battery life to you? If you need all-day battery, the 9T is the better choice.
  2. Do you prioritize a high-quality camera? The 9T's camera is significantly better than the A3x's.
  3. Do you prefer newer software or better performance? A3x comes with a newer Android version but has worse hardware performance overall.

Scenario-Based Recommendations:

  • For the photographer/media consumer: Choose the Redmi 9T for its better camera and display.
  • For the budget-conscious user: Consider the Redmi A3x if its lower price suits you but be mindful that the A3x has a inferior display, camera, and battery compared to the 9T.
  • For the power user: the 9T with 6GB of RAM and a large battery would be a better fit.
  • For software updates: The A3x, being newer, is likely to get longer software support.

My Choice

If I were to choose, I would pick the Xiaomi Redmi 9T. While the Redmi A3x offers a slightly smoother display and newer Android version, the overall package of the 9T is far more compelling for my needs. The superior display, versatile camera, much larger battery, better audio, faster charging and additional sensors make a big difference for my use. While the software is older, I value the hardware benefits more. The larger battery and better camera system are particularly appealing.

Emily Harper
Emily Harper

Technology Insights Specialist

Dedicated technology writer specializing in mobile device analysis and technology communication. Expert at translating complex smartphone features into clear, actionable insights for diverse audiences.

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