Home Phone comparison Samsung Galaxy S9 and Xiaomi 15T - Which is better?

Samsung Galaxy S9 vs Xiaomi 15T

47 out 100
Samsung Galaxy S9
VS
82 out 100
Xiaomi 15T
Samsung Galaxy S9
Xiaomi 15T

Compared 2 smartphones : Samsung Galaxy S9 Manufactured in March, 2018, with display 5.8 with chipsetSamsung Exynos 9 Octa 9810, vs Xiaomi 15T, Manufactured in September, 2025 with chipsetMediaTek Dimensity 8400 Ultra. 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 S9
  • Higher pixel density: 568ppi
  • Lighter design: 163g vs 194g
  • Supports newer USB: 3.1 vs 2
Reasons to choose Xiaomi 15T
  • Larger display: 6.83in
  • Higher refresh rate: 120Hz
  • Higher battery capacity: 5500mAh vs 3000mAh
  • Newer Bluetooth version: 6.0 vs 5
  • Infrared port
  • Built-in eSIM

Versions

Available versions and configurations
Memory Options - 4/64 GB
- 4/128 GB
- 4/256 GB		 - 12/256 GB
- 12/512 GB

Review

Key Specs Samsung Galaxy S9 and Xiaomi 15T
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.
Customize your score
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 S9
vs
Xiaomi 15T

Display

Display quality comparison
Type Super AMOLED AMOLED
Size 5.8 in 6.83 in
Resolution 1440x2960 pixels 1280x2772 pixels
Aspect ratio 18.5:9 19.5:9
Pixel density 568 ppi 447 ppi
Refresh rate 60 Hz 120 Hz
Adaptive refresh rate No Yes
Max brightness 658 nits n/a
HDR support Yes HDR10 Yes, Dolby Vision
Touch Sampling Rate n/a 480 Hz
Screen-to-body ratio 84.1 % 89.9 %
Features Always-On Display - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Samsung Galaxy S9
657 nits
Xiaomi 15T
n/a
PWM (Flicker)240 Hzn/a
Response time7 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Samsung Galaxy S9]

Design & Build

Design and ergonomics comparison
Height 147.7 mm (5.81 in) 163.2 mm (6.43 in)
Width 68.7 mm (2.7 in) 78 mm (3.07 in)
Thickness 8.5 mm (0.33 in) 7.5 mm (0.3 in)
Weight 163 g (5.75 oz) 194 g (6.84 oz)
Water resistance IP68 IP68
Cooling system n/a Vapor chamber
Back panel Glass n/a
Frame Metal Plastic
Colors - Black
- Gold
- Gray
- Blue
- Purple		 - Black
- Gray
- Rose Gold
Fingerprint sensor Yes rear Yes, In-Display
Screen-to-body ratio
Samsung Galaxy S9
84.1 %
Xiaomi 15T
89.9 %

Performance

Testing Samsung Galaxy S9 and Xiaomi 15T In benchmarks
Processor
Chipset Samsung Exynos 9 Octa 9810 MediaTek Dimensity 8400 Ultra
Max Frequency 2900 MHz 3250 MHz
CPU Cores 8 (4 + 4) 8 (1 + 3 + 4)
Architecture - 4/1.9 (Cortex-A55)
- 4/2.9 (Exynos M3)		 - 4/2.1 (Cortex-A725)
- 3/3 (Cortex-A725)
- 1/3.25 (Cortex-A725)
Process Samsung TSMC
Transistor Size 10 nm 4 nm
Neural Processor Yes MediaTek NPU 880
Graphics Mali-G72 MP18 Mali-G720 MP7
GPU Cores 324 896
GPU Frequency 572 MHz 1300 MHz
FLOPS 370.6 GFLOPS 2329.6 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S9
734
Xiaomi 15T
1603
Geekbench 6 (Multi-Core)
Samsung Galaxy S9
1894
Xiaomi 15T
6413
Geekbench 6 (Single-Core)7341603
Geekbench 6 (Multi-Core)18946413
Geekbench Compute (GPU)n/a11228
Sources: Geekbench v6 [Xiaomi 15T]
AnTuTu 10
AnTuTu 10
Samsung Galaxy S9
470496
Xiaomi 15T
1872827
CPU137633448609
GPU168155683486
Memory86184396486
UX78524344246
NanoReview Score4704961872827
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S9
2272
Xiaomi 15T
n/a
Max Surface Temp.39.2 °Cn/a
Stability93 %n/a
Graphics Test13 fpsn/a
Graphics Score2272n/a
Sources: 3DMark [Samsung Galaxy S9]
PCMark 3.0
PCMark 3.0
Samsung Galaxy S9
6347
Xiaomi 15T
n/a
Writing score6325n/a
Web score5265n/a
Video editing5496n/a
Data manipulation5694n/a
NanoReview Score6347n/a

Memory

RAM
RAM Size 4 GB 12 GB
Memory Type LPDDR4X LPDDR5X
Memory Frequency 1794 MHz n/a
Channels 2 4
Storage
Storage Capacity64 GB256 GB
Storage TypeUFS 2.1UFS 4.1
Memory CardMicroSDNo

Software

OS Android 8.0 (Upgradeable to Android 10) Android 15
OS Size 14 GB n/a
UI Skin One UI 2.5 HyperOS 2.0

Battery

Volume 3000 mAh 5500 mAh
Max Charging Power 15 W 67 W
Battery Type Li-Po Li-Po
Removable No No
Wireless Charging Yes Qi/PMA (10 W) No
Reverse Charging No No
Fast Charging Yes (40% in 30 min) Yes (50% in 22 min)
Full Charge Time 1:35 h 0:50 h
Battery Life Test
Battery Life
Samsung Galaxy S9
15:09
Xiaomi 15T
n/a
Web Browsing05:32 hn/a
Video Playback09:42 hn/a
Games03:45 hn/a
Standby Mode75 hn/a

Main camera

Matrix 12 MP 50 MP
Photo resolution 4000x3000 pixels 8192x6144 pixels
Zoom Digital Optical, 2x
Flash Dual LED Dual LED
Stabilization Optical Optical
8K Recording No No
4K Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 240 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (720p) 240 fps (1080p)
Wide-angle lens n/a 120 °
Lenses count Standard: 12 MP Standard: 50 MP
Telephoto: 50 MP
Ultra-wide: 12 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix12 MP50 MP
Aperturef/1.5 - 2.4f/1.7
Focal length26 mm23 mm
SensorSamsung SAK2L3Omnivision OV50 Light Hunter 800
Sensor size1/2.551/1.55
Pixel size1.4 μm1 μm
AutofocusPhase autofocusPhase autofocus
StabilizationOpticalOptical
Telephoto
Matrixn/a50 MP
Aperturen/af/1.9
Focal lengthn/a46 mm
Sensorn/aSamsung S5KJN5
Sensor sizen/a1/2.76
Pixel sizen/a0.64 μm
Stabilizationn/aDigital
Ultra-wide lens
Matrixn/a12 MP
Aperturen/af/2.2
Focal lengthn/a15 mm
Sensor sizen/a1/3.06
Pixel sizen/a1.12 μm
Stabilizationn/aDigital
Main camera DxOMark results
Photo quality
Samsung Galaxy S9
104
Xiaomi 15T
n/a
Video quality
Samsung Galaxy S9
91
Xiaomi 15T
n/a
Overall camera score
Samsung Galaxy S9
99
Xiaomi 15T
n/a

Front camera

Matrix 8 MP 32 MP
Photo resolution 3264x2448 pixels n/a
Aperture f/1.7 f/2.2
Focal length 25 mm 21 mm
Sensor Samsung S5K3H1 CMOS
Sensor size 1/3.6 1/3.44
Pixel size 1.22 μm 0.64 μm
Autofocus Phase autofocus (Dual Pixel) No
Stabilization Digital Digital
Video resolution 1440p at 30 fps 2160p (4K) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 6E (802.11 a/b/g/n/ac/ax)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot		 - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 6.0
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
DisplayPort n/a No
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Yes Yes
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoYes
Hybrid SlotYesNo
2G BandsGSM 850, GSM 900, GSM 1800, GSM 1900GSM 2/3/5/8
3G BandsHSDPA 850, HSDPA 900, HSDPA 1900, HSDPA 2100WCDMA B1/2/4/5/8/6/19
LTE Bands*LTE (B700/B800/B850/B900/B1700/B1800/B1900/B2100/B2300/B2500/B2600)LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B26/B28/B32/B66/B71)
LTE category18n/a
5G SupportNoYes

Sound

Speakers Stereo n/a
3.5 mm Jack Yes No
FM Radio No No
Dolby Atmos Yes Yes
Speaker Test
Max Volume
Samsung Galaxy S9
86 dB
Xiaomi 15T
n/a

Other

Class Flagship Mid-range
Announced February, 2018 yr September, 2025 yr
Release Date March, 2018 yr September, 2025 yr
Launch Price ($) 720 n/a
MSRP ($) n/a 650
Sensors - Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included n/a No
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Xiaomi 15T the clear winner in this comparison.

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