Samsung Galaxy Note 9 vs Xiaomi Redmi Note 4X

Compare recorded specifications, size and practical differences.

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Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

  • Display technology

    OLED versus LCD

    Galaxy Note 9:
    OLED
    Redmi Note 4X:
    LCD
  • Weight

    Redmi Note 4X: 36 g lighter

    Galaxy Note 9:
    201 g
    Redmi Note 4X:
    165 g
  • Screen diagonal

    Redmi Note 4X: 0.9 in smaller diagonal

    Galaxy Note 9:
    6.4 in
    Redmi Note 4X:
    5.5 in
  • Rear camera layout

    Galaxy Note 9:
    Dual
    Redmi Note 4X:
    Single
  • Height

    Redmi Note 4X: 10.9 mm shorter

    Galaxy Note 9:
    161.9 mm
    Redmi Note 4X:
    151 mm
  • Release year

    Galaxy Note 9:
    2018
    Redmi Note 4X:
    2017

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

  1. 1. Galaxy Note 9

    Height:
    161.9 mm +10.9 mm versus Redmi Note 4X
    Width:
    76.4 mm
    Depth:
    8.8 mm
  2. 2. Redmi Note 4X

    Height:
    151 mm
    Width:
    76 mm
    Depth:
    8.5 mm

Weight

Bars start at zero and share a scale within this chart.

  1. 1. Galaxy Note 9

    201 g

    +36 g versus Redmi Note 4X

  2. 2. Redmi Note 4X

    165 g

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

  1. 1. Galaxy Note 9

    Screen diagonal:
    6.4 in
    Aspect ratio (height:width):
    18.5:9
    Approximate rectangular screen area:
    104 cm²
  2. 2. Redmi Note 4X

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    83.4 cm²

Galaxy Note 9 has approximately 24.7% more rectangular screen area than Redmi Note 4X.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

Galaxy Note 9: Original memory entry

512 GB · 8 GB RAM 128 GB · 6 GB RAM

Redmi Note 4X: Original memory entry

64 GB · 4 GB RAM 16/32 GB · 3 RAM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. Galaxy Note 9

NFC:
Yes
Headphone jack:
Yes
Memory card support:
See details microSD · up to 512 GB (uses SIM 2 slot) - dual SIM model only

2. Redmi Note 4X

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 2 slot)

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

  1. 1. Galaxy Note 9

    4000 mAh

  2. 2. Redmi Note 4X

    4100 mAh

    +100 mAh versus Galaxy Note 9

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. Galaxy Note 92. Redmi Note 4X

Everyday essentials
Everyday essentials — specifications for Galaxy Note 9, Redmi Note 4X.
SpecificationGalaxy Note 9Redmi Note 4X
Dimensions (HxWxD)
  • 161.9 Х 76.4 Х 8.8 mm
  • 151 Х 76 Х 8.5 mm
Weight
  • 201 g
  • 165 g
Technology
  • Super AMOLED
  • IPS LCD
Screen size
  • 6.4" inch
  • 5.5" inch
Screen resolution
  • 1440 x 2960 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 512 GB
  • 8 GB RAM 128 GB
  • 6 GB RAM
  • 64 GB
  • 4 GB RAM 16/32 GB
  • 3 RAM
Memory card support
  • microSD
  • up to 512 GB (uses SIM 2 slot) - dual SIM model only
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 4000 mAh
  • Non-removable Li-Ion
  • 4100 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 8.1 (Oreo)
  • upgradable to Android 9.0 (Pie); One UI
  • Android 6.0 (Marshmallow)
  • upgradable to 7.0 (Nougat); MIUI 10
Chipset
  • Exynos 9810 Octa (10 nm) EMEA -Qualcomm SDM845 Snapdragon 845 (10 nm) USA/LATAM
  • China
  • Qualcomm MSM8953 Snapdragon 625 (14 nm)
NFC
  • Yes
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Galaxy Note 9, Redmi Note 4X.
SpecificationGalaxy Note 9Redmi Note 4X
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 103.2 cm2
  • 83.4 cm2
Screen format
  • 18.5:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 83.4%
  • 72.7%
PPI /points per inch/
  • 516 PPI
  • 401 PPI
Screen protection
  • Corning Gorilla Glass 5
Unknown
Camera and Video

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Camera and Video — specifications for Galaxy Note 9, Redmi Note 4X.
SpecificationGalaxy Note 9Redmi Note 4X
Rear camera, main
  • 12 MP
  • Dual
  • 13 MP
  • Single
Camera specs
  • 12 MP
  • f/1.5-2.4
  • 26mm (wide)
  • 1/2.55''
  • 1.4µm
  • dual pixel PDAF
  • OIS -12 MP
  • f/2.4
  • 52mm (telephoto)
  • 1/3.4''
  • 1.0µm
  • AF
  • OIS
  • 2x optical zoom
  • 13 MP
  • f/2.0
  • 1.12µm
  • PDAF
Functions
  • Dual video call
  • Auto-HDR
  • Dual-LED dual-tone flash
  • panorama
  • HDR
Video
  • 1440p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 5 MP
  • Single
Specifications
  • 8 MP
  • f/1.7
  • 25mm (wide)
  • 1/3.6''
  • 1.22µm
  • AF
  • 5 MP
  • f/2.0
DxOMark Main Score *
  • 103
Unknown
DxOMark Photo *
  • 96
Unknown
DxOMark Video *
  • 86
Unknown
DxOMark Selfie Score *
  • 92
Unknown
Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for Galaxy Note 9, Redmi Note 4X.
SpecificationGalaxy Note 9Redmi Note 4X
Processor CPU
  • Octa-core (4x2.7 GHz Mongoose M3 & 4x1.8 GHz Cortex-A55) EMEA -Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) USA/LATAM
  • China
  • Octa-core 2.0 GHz Cortex-A53
Graphics processor GPU
  • Mali-G72 MP18 EMEA -Adreno 630 USA/LATAM
  • China
  • Adreno 506
Antutu 7 score *
  • 249456
  • 90236
GeekBench 4 Single Core *
  • 2358
  • 832
GeekBench 4 Multi-Core *
  • 8531
  • 3415
GeekBench 4 RenderScript *
  • 9353
  • 3045
Antutu 8 score *
  • 320265
Unknown
GeekBench 4 Battery *
  • 5154
Unknown
GeekBench 5 Single Core *
  • 480
  • 170
GeekBench 5 Multi-Core *
  • 2002
  • 944
General specs
General specs — specifications for Galaxy Note 9, Redmi Note 4X.
SpecificationGalaxy Note 9Redmi Note 4X
Release date
  • 2018
  • August
  • 2017
  • February
Colors
  • Metallic Copper
  • Lavender Purple
  • Ocean Blue
  • Midnight Black
  • Pure White
  • Alpine White
  • Platinum Silver
  • Champagne Gold
  • Matte Black
  • Hatsune Miku
  • Sakura Powder
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 750 EUR
  • 130 EUR
Body build
  • Front/back glass (Gorilla Glass 5)
  • aluminum frame
  • Front glass
  • aluminum body
Communication and Connectivity
Communication and Connectivity — specifications for Galaxy Note 9, Redmi Note 4X.
SpecificationGalaxy Note 9Redmi Note 4X
SIM card
  • Single SIM (Nano-SIM)Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
  • Hybrid Dual SIM (Micro-SIM/Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) CDMA 800 / 1900 - USA -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO - USA -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 12(700)
  • 13(700)
  • 17(700)
  • 18(800)
  • 19(800)
  • 20(800)
  • 25(1900)
  • 26(850)
  • 28(700)
  • 32(1500)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
  • 66(1700/2100)
  • 71(600) - Global LTE band 1(2100)
  • 14(700)
  • 29(700)
  • 30(2300)
  • 46
  • 71(600) - USA
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500) - Snapdragon model LTE band 1(2100)
  • 8(900)
  • 41(2500) - Mediatek model
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A (5CA) Cat18 1200/200 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 a/b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
  • GALILEO
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • 3.1
  • Type-C 1.0 reversible connector
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 5.0
  • A2DP
  • LE
  • aptX
  • 4.2
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Galaxy Note 9, Redmi Note 4X.
SpecificationGalaxy Note 9Redmi Note 4X
Radio
  • No
  • FM radio
Others
  • HDR10 -Always-on display
  • 32-bit/384kHz audio -Active noise cancellation with dedicated mic
  • 24-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features
Other features — specifications for Galaxy Note 9, Redmi Note 4X.
SpecificationGalaxy Note 9Redmi Note 4X
Dop
  • Sensors Iris scanner
  • fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • barometer
  • heart rate
  • SpO2 - Samsung DeX (desktop experience support) -Fast battery charging (Quick Charge 2.0) -Qi/PMA wireless charging (market dependent) -ANT+ -Bixby natural language commands and dictation - Samsung Pay (Visa
  • MasterCard certified) -IP68 dust/water proof (up to 1.5m for 30 mins) -Stylus (Bluetooth integration) - SM-N960F/DS (Global); SM-N960U (USA); SM-N9600/DS (LATAM
  • Brazil
  • China)
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - For China