Home Phone comparison Samsung Galaxy S20 Ultra and Xiaomi 15T - Which is better?

Samsung Galaxy S20 Ultra vs Xiaomi 15T

65 out 100
Samsung Galaxy S20 Ultra
VS
82 out 100
Xiaomi 15T
Samsung Galaxy S20 Ultra
Xiaomi 15T

Compared 2 smartphones : Samsung Galaxy S20 Ultra Manufactured in March, 2020, with display 6.9 with chipsetSamsung Exynos 990, 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 S20 Ultra
  • Larger display: 6.9in
  • Higher pixel density: 511ppi
  • Supports newer USB: 3.1 vs 2
Reasons to choose Xiaomi 15T
  • Lighter design: 194g vs 220g
  • Higher battery capacity: 5500mAh vs 5000mAh
  • Newer Bluetooth version: 6.0 vs 5
  • Infrared port

Versions

Available versions and configurations
Memory Options - 12/128 GB
- 12/256 GB
- 16/512 GB		 - 12/256 GB
- 12/512 GB

Review

Key Specs Samsung Galaxy S20 Ultra 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:
Galaxy S20 Ultra
vs
Xiaomi 15T

Display

Display quality comparison
Type Dynamic AMOLED AMOLED
Size 6.9 in 6.83 in
Resolution 1440x3200 pixels 1280x2772 pixels
Aspect ratio 20:9 19.5:9
Pixel density 511 ppi 447 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate No Yes
Max brightness 800 nits n/a
HDR support Yes HDR10+ Yes, Dolby Vision
Touch Sampling Rate n/a 480 Hz
Screen-to-body ratio 90.6 % 89.9 %
Features - DCI-P3
- Always-On Display		 - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Samsung Galaxy S20 Ultra
886 nits
Xiaomi 15T
n/a
sRGB gamut99.2 %n/a
PWM (Flicker)240 Hzn/a
Response time6.2 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Samsung Galaxy S20 Ultra]

Design & Build

Design and ergonomics comparison
Height 166.9 mm (6.57 in) 163.2 mm (6.43 in)
Width 76 mm (2.99 in) 78 mm (3.07 in)
Thickness 8.8 mm (0.35 in) 7.5 mm (0.3 in)
Weight 220 g (7.76 oz) 194 g (6.84 oz)
Water resistance IP68 IP68
Cooling system Vapor chamber Vapor chamber
Back panel Glass n/a
Frame Metal Plastic
Colors - Black
- Gray		 - Black
- Gray
- Rose Gold
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Samsung Galaxy S20 Ultra
90.6 %
Xiaomi 15T
89.9 %

Performance

Testing Samsung Galaxy S20 Ultra and Xiaomi 15T In benchmarks
Processor
Chipset Samsung Exynos 990 MediaTek Dimensity 8400 Ultra
Max Frequency 3020 MHz 3250 MHz
CPU Cores 8 (2 + 2 + 4) 8 (1 + 3 + 4)
Architecture - 4/2 (Cortex-A55)
- 2/2.5 (Cortex-A76)
- 2/2.73 (Exynos M5)		 - 4/2.1 (Cortex-A725)
- 3/3 (Cortex-A725)
- 1/3.25 (Cortex-A725)
Process Samsung TSMC
Transistor Size 7 nm 4 nm
Neural Processor Yes MediaTek NPU 880
Graphics Mali-G77 MP11 Mali-G720 MP7
GPU Cores 704 896
GPU Frequency 800 MHz 1300 MHz
FLOPS 1126 GFLOPS 2329.6 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S20 Ultra
1159
Xiaomi 15T
1603
Geekbench 6 (Multi-Core)
Samsung Galaxy S20 Ultra
3158
Xiaomi 15T
6413
Geekbench 6 (Single-Core)11591603
Geekbench 6 (Multi-Core)31586413
Geekbench Compute (GPU)n/a11228
Sources: Geekbench v6 [Xiaomi 15T]
AnTuTu 10
AnTuTu 10
Samsung Galaxy S20 Ultra
760316
Xiaomi 15T
1872827
CPU220525448609
GPU225011683486
Memory146451396486
UX168329344246
NanoReview Score7603161872827
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S20 Ultra
4320
Xiaomi 15T
n/a
Max Surface Temp.38.6 °Cn/a
Stability53 %n/a
Graphics Test25 fpsn/a
Graphics Score4320n/a
Sources: 3DMark [Samsung Galaxy S20 Ultra]
PCMark 3.0
PCMark 3.0
Samsung Galaxy S20 Ultra
11163
Xiaomi 15T
n/a
Writing score13391n/a
Web score8714n/a
Video editing6104n/a
Data manipulation9006n/a
NanoReview Score11163n/a

Memory

RAM
RAM Size - 12 GB
- 16 GB		 12 GB
Memory Type LPDDR5 LPDDR5X
Memory Frequency 3200 MHz n/a
Channels 2 4
Storage
Storage Capacity- 128 GB
- 512 GB		256 GB
Storage TypeUFS 3.0UFS 4.1
Memory CardMicroSDNo

Software

OS Android 10.0 (Upgradeable to Android 13) Android 15
OS Size 23.7 GB n/a
UI Skin One UI 5.1 HyperOS 2.0

Battery

Volume 5000 mAh 5500 mAh
Max Charging Power 45 W 67 W
Battery Type Li-ion Li-Po
Removable No No
Wireless Charging Yes (15 W) No
Reverse Charging Yes (Wireless) No
Fast Charging Yes (100% in 80 min) Yes (50% in 22 min)
Full Charge Time 1:20 h 0:50 h
Battery Life Test
Battery Life
Samsung Galaxy S20 Ultra
18:01
Xiaomi 15T
n/a
Web Browsing06:27 hn/a
Video Playback11:23 hn/a
Games04:23 hn/a
Standby Mode91 hn/a

Main camera

Matrix 108 MP 50 MP
Photo resolution 12032x9204 pixels 8192x6144 pixels
Zoom Optical, 4x Optical, 2x
Flash LED Dual LED
Stabilization Optical Optical
8K Recording Up to 24FPS No
4K Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (720p) 240 fps (1080p)
Wide-angle lens 120 ° 120 °
Lenses count Standard: 108 MP
Telephoto: 48 MP
Ultra-wide: 12 MP
Depth: 0.3 MP		 Standard: 50 MP
Telephoto: 50 MP
Ultra-wide: 12 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix108 MP50 MP
Aperturef/1.8f/1.7
Focal length26 mm23 mm
SensorSamsung Bright S5KHM1Omnivision OV50 Light Hunter 800
Sensor size1/1.331/1.55
Pixel size0.8 μm1 μm
AutofocusPhase autofocus (Dual Pixel)Phase autofocus
StabilizationOpticalOptical
Telephoto
Matrix48 MP50 MP
Aperturef/3.5f/1.9
Focal length103 mm46 mm
SensorSony IMX586Samsung S5KJN5
Sensor size1/21/2.76
Pixel size0.8 μm0.64 μm
StabilizationOpticalDigital
Ultra-wide lens
Matrix12 MP12 MP
Aperturef/2.2f/2.2
Focal length13 mm15 mm
SensorSamsung S5K2LAn/a
Sensor size1/2.551/3.06
Pixel size1.4 μm1.12 μm
StabilizationDigitalDigital

Front camera

Matrix 40 MP 32 MP
Photo resolution 7864x5200 pixels n/a
Aperture f/2.2 f/2.2
Focal length 26 mm 21 mm
Sensor Samsung S5KGH1 CMOS
Sensor size 1/2.65 1/3.44
Pixel size 0.7 μm 0.64 μm
Autofocus Phase autofocus (Dual Pixel) No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 2160p (4K) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 6 (802.11 b/g/n/ac/ax) Wi-Fi 6E (802.11 a/b/g/n/ac/ax)
Wi-Fi features - Wi-Fi Direct
- Wi-Fi Display		 - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 6.0
Bluetooth features LE, 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 *YesYes
Hybrid SlotYesNo
2G BandsGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2GSM 2/3/5/8
3G BandsHSDPA 850 / 900 / 1900 / 2100WCDMA B1/2/4/5/8/6/19
LTE Bands*LTE (B850/B900/B1700/B1900/B2100)LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B26/B28/B32/B66/B71)
LTE category22n/a
5G SupportYesYes

Sound

Speakers Stereo n/a
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes Yes
Speaker Test
Max Volume
Samsung Galaxy S20 Ultra
84.4 dB
Xiaomi 15T
n/a

Other

Class Flagship Mid-range
Announced February, 2020 yr September, 2025 yr
Release Date March, 2020 yr September, 2025 yr
Launch Price ($) 1400 n/a
MSRP ($) n/a 650
Sensors - Hall Sensor
- 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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