Home Phone comparison Samsung Galaxy Note 9 and Xiaomi Redmi 15 4G - Which is better?

Samsung Galaxy Note 9 vs Xiaomi Redmi 15 4G

51 out 100
Samsung Galaxy Note 9
VS
60 out 100
Xiaomi Redmi 15 4G
Samsung Galaxy Note 9
Xiaomi Redmi 15 4G

Compared 2 smartphones : Samsung Galaxy Note 9 Manufactured in August, 2018, with display 6.4 with chipsetSamsung Exynos 9 Octa 9810, vs Xiaomi Redmi 15 4G, Manufactured in August, 2025 with chipsetQualcomm Snapdragon 685. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy Note 9
  • Higher pixel density: 514ppi
  • Lighter design: 201g vs 224g
  • Supports newer USB: 3.1 vs 2
  • Supports Dolby Atmos
Reasons to choose Xiaomi Redmi 15 4G
  • Larger display: 6.9in
  • Higher refresh rate: 144Hz
  • Higher battery capacity: 7000mAh vs 4000mAh
  • Infrared port
  • Includes charger

Versions

Available versions and configurations
Memory Options - 6/128 GB
- 8/128 GB
- 8/512 GB		 - 6/128 GB
- 8/256 GB

Review

Key Specs Samsung Galaxy Note 9 and Xiaomi Redmi 15 4G
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
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Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Samsung Galaxy Note 9
vs
Xiaomi Redmi 15 4G

Display

Display quality comparison
Type Super AMOLED IPS LCD
Size 6.4 in 6.9 in
Resolution 1440x2960 pixels 1080x2340 pixels
Aspect ratio 18.5:9 19.5:9
Pixel density 514 ppi 374 ppi
Refresh rate 60 Hz 144 Hz
Adaptive refresh rate No Yes
Max brightness 520 nits n/a
HDR support Yes HDR10 No
Screen-to-body ratio 84 % 83.1 %
Features Always-On Display n/a
Display test
Peak brightness (auto)
Samsung Galaxy Note 9
657 nits
Xiaomi Redmi 15 4G
n/a
sRGB gamut144.6 %n/a
PWM (Flicker)227 Hzn/a
Response time8 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Samsung Galaxy Note 9]

Design & Build

Design and ergonomics comparison
Height 161.9 mm (6.37 in) 171.1 mm (6.74 in)
Width 76.4 mm (3.01 in) 82.1 mm (3.23 in)
Thickness 8.8 mm (0.35 in) 8.6 mm (0.34 in)
Weight 201 g (7.09 oz) 224 g (7.9 oz)
Water resistance IP68 IP64
Back panel Glass Plastic
Frame Metal Plastic
Colors - Black
- Blue
- Brown		 - Black
- Gray
- Purple
Fingerprint sensor Yes rear Yes, In-Button
Screen-to-body ratio
Samsung Galaxy Note 9
84 %
Xiaomi Redmi 15 4G
83.1 %

Performance

Testing Samsung Galaxy Note 9 and Xiaomi Redmi 15 4G In benchmarks
Processor
Chipset Samsung Exynos 9 Octa 9810 Qualcomm Snapdragon 685
Max Frequency 2700 MHz 2800 MHz
CPU Cores 8 (4 + 4) 8 (4 + 4)
Architecture - 4/1.9 (Cortex-A55)
- 4/2.9 (Exynos M3)		 - 4/1.9 (Cortex-A53)
- 4/2.8 (Cortex-A73)
Process Samsung TSMC
Transistor Size 10 nm 6 nm
Neural Processor Yes Hexagon 686
Graphics Mali-G72 MP18 Adreno 610
GPU Cores 324 128
GPU Frequency 572 MHz 1260 MHz
FLOPS 370.6 GFLOPS 322.6 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy Note 9
828
Xiaomi Redmi 15 4G
475
Geekbench 6 (Multi-Core)
Samsung Galaxy Note 9
2026
Xiaomi Redmi 15 4G
1514
Geekbench 6 (Single-Core)828475
Geekbench 6 (Multi-Core)20261514
AnTuTu 10
AnTuTu 10
Samsung Galaxy Note 9
457443
Xiaomi Redmi 15 4G
380990
CPU147238114885
GPU13790657988
Memory86902103236
UX85397104881
NanoReview Score457443380990
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy Note 9
2333
Xiaomi Redmi 15 4G
n/a
Max Surface Temp.48.7 °Cn/a
Stability95 %n/a
Graphics Test13 fpsn/a
Graphics Score2333n/a
Sources: 3DMark [Samsung Galaxy Note 9]
PCMark 3.0
PCMark 3.0
Samsung Galaxy Note 9
6325
Xiaomi Redmi 15 4G
n/a
Writing score6182n/a
Web score5312n/a
Video editing5462n/a
Data manipulation5867n/a
NanoReview Score6325n/a

Memory

RAM
RAM Size - 6 GB
- 8 GB		 6 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 1794 MHz 2133 MHz
Channels 2 2
Storage
Storage Capacity- 128 GB
- 256 GB
- 512 GB		128 GB
Storage TypeUFS 2.1UFS 2.2
Memory CardMicroSDMicroSD

Software

OS Android 8.1 (Upgradeable to Android 10) Android 15
OS Size 19 GB n/a
UI Skin One UI 2.5 HyperOS 2.0

Battery

Volume 4000 mAh 7000 mAh
Max Charging Power 15 W 33 W
Battery Type Li-Po n/a
Removable No No
Wireless Charging Yes Qi/PMA (15 W) No
Reverse Charging No No
Fast Charging Yes Samsung Adaptive Fast Charge (50% in 35 min) Yes
Full Charge Time 1:40 h n/a
Battery Life Test
Battery Life
Samsung Galaxy Note 9
19:26
Xiaomi Redmi 15 4G
n/a
Web Browsing07:31 hn/a
Video Playback11:36 hn/a
Games05:01 hn/a
Standby Mode96 hn/a

Main camera

Matrix 12 MP 50 MP
Photo resolution 4000x3000 pixels n/a
Zoom Optical, 2x Digital
Flash Dual LED LED
Stabilization Optical Digital
8K Recording No No
4K Recording Yes (Up to 60 fps) No
1080p Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
Slow Motion 960 fps (720p) n/a
Lenses count Standard: 12 MP
Telephoto: 12 MP		 Standard: 50 MP
Depth
Features - Bokeh effect
- Pro mode
- RAW support		 Bokeh effect
Main lens
Matrix12 MP50 MP
Aperturef/1.5 - 2.4f/1.8
Focal length26 mmn/a
SensorSamsung SAK2L3n/a
Sensor size1/2.55n/a
Pixel size1.4 μmn/a
AutofocusPhase autofocus (Dual Pixel)Phase autofocus
StabilizationOpticalDigital
Telephoto
Matrix12 MPn/a
Aperturef/2.4n/a
Focal length52 mmn/a
SensorSamsungn/a
Sensor size1/3.4n/a
Pixel size1 μmn/a
StabilizationOpticaln/a
Main camera DxOMark results
Photo quality
Samsung Galaxy Note 9
107
Xiaomi Redmi 15 4G
n/a
Video quality
Samsung Galaxy Note 9
94
Xiaomi Redmi 15 4G
n/a
Overall camera score
Samsung Galaxy Note 9
103
Xiaomi Redmi 15 4G
n/a
Sources: DxOMark [Samsung Galaxy Note 9]

Front camera

Matrix 8 MP 8 MP
Photo resolution 3264x2448 pixels n/a
Aperture f/1.7 f/2.0
Focal length 25 mm n/a
Sensor Samsung S5K3H1 n/a
Sensor size 1/3.6 n/a
Pixel size 1.22 μm n/a
Autofocus Phase autofocus (Dual Pixel) No
Stabilization Digital Digital
Video resolution 1440p at 30 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5
Bluetooth features PBAP/PAB, PAN, OPP, MAP, LE, HSP, HID, HFP, DIP, AVRCP, A2DP LE
USB type USB Type-C USB Type-C
USB version 3.1 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotYesNo
2G BandsGSM 850, GSM 900, GSM 1800, GSM 1900n/a
3G BandsHSDPA 850, HSDPA 900, HSDPA 1900, HSDPA 2100n/a
LTE Bands*LTE (B700/B800/B850/B900/B1700/B1800/B1900/B2100/B2300/B2500/B2600)n/a
LTE category18n/a
5G SupportNoNo

Sound

Speakers Stereo n/a
3.5 mm Jack Yes Yes
FM Radio No No
Dolby Atmos Yes n/a
Speaker Test
Max Volume
Samsung Galaxy Note 9
71.6 dB
Xiaomi Redmi 15 4G
n/a

Other

Class Flagship Budget
Announced August, 2018 yr August, 2025 yr
Release Date August, 2018 yr August, 2025 yr
Launch Price ($) 1000 n/a
MSRP ($) n/a 150
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included n/a Yes, 33 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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