Home Phone comparison Samsung Galaxy Note 20 Ultra and Xiaomi Redmi Note 15 5G - Which is better?

Samsung Galaxy Note 20 Ultra vs Xiaomi Redmi Note 15 5G

63 out 100
Samsung Galaxy Note 20 Ultra
VS
63 out 100
Xiaomi Redmi Note 15 5G
Samsung Galaxy Note 20 Ultra
Xiaomi Redmi Note 15 5G

Compared 2 smartphones : Samsung Galaxy Note 20 Ultra Manufactured in August, 2020, with display 6.9 with chipsetSamsung Exynos 990, vs Xiaomi Redmi Note 15 5G, Manufactured in August, 2025 with chipsetQualcomm Snapdragon 6 Gen 3. 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 20 Ultra
  • Larger display: 6.9in
  • Higher pixel density: 496ppi
  • Supports newer USB: 3.2 vs 2
  • Supports Dolby Atmos
  • Built-in eSIM
Reasons to choose Xiaomi Redmi Note 15 5G
  • Lighter design: 178g vs 208g
  • Higher battery capacity: 5800mAh vs 4500mAh
  • Infrared port
  • Includes charger

Versions

Available versions and configurations
Memory Options - 8/256 GB
- 12/128 GB
- 12/256 GB
- 12/512 GB		 - 6/128 GB
- 8/128 GB
- 8/256 GB
- 12/256 GB

Review

Key Specs Samsung Galaxy Note 20 Ultra and Xiaomi Redmi Note 15 5G
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 Note 20 Ultra
vs
Redmi Note 15 5G

Display

Display quality comparison
Type Dynamic AMOLED AMOLED
Size 6.9 in 6.77 in
Resolution 1440x3088 pixels 1080x2340 pixels
Aspect ratio 19.5:9 n/a
Pixel density 496 ppi 388 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes (10-120 Hz) Yes (60-120 Hz)
Max brightness 600 nits n/a
HDR support Yes HDR10+ No
Screen-to-body ratio 91.8 % 89.1 %
Features - DCI-P3
- Always-On Display		 DCI-P3
Display test
Peak brightness (auto)
Samsung Galaxy Note 20 Ultra
1020 nits
Xiaomi Redmi Note 15 5G
n/a
sRGB gamut96.9 %n/a
PWM (Flicker)245 Hzn/a
Response time6 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Samsung Galaxy Note 20 Ultra]

Design & Build

Design and ergonomics comparison
Height 164.8 mm (6.49 in) 165 mm (6.5 in)
Width 77.2 mm (3.04 in) 75.4 mm (2.97 in)
Thickness 8.1 mm (0.32 in) 7.4 mm (0.29 in)
Weight 208 g (7.34 oz) 178 g (6.28 oz)
Water resistance IP68 IP68
Cooling system Vapor chamber n/a
Back panel Glass n/a
Frame Metal Plastic
Colors - White
- Black
- Brown		 - White
- Black
- Blue
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Samsung Galaxy Note 20 Ultra
91.8 %
Xiaomi Redmi Note 15 5G
89.1 %

Performance

Testing Samsung Galaxy Note 20 Ultra and Xiaomi Redmi Note 15 5G In benchmarks
Processor
Chipset Samsung Exynos 990 Qualcomm Snapdragon 6 Gen 3
Max Frequency 2730 MHz 2400 MHz
CPU Cores 8 (2 + 2 + 4) 8 (4 + 4)
Architecture - 4/2 (Cortex-A55)
- 2/2.5 (Cortex-A76)
- 2/2.73 (Exynos M5)		 - 4/1.8 (Cortex-A55)
- 4/2.4 (Cortex-A78)
Process Samsung Samsung
Transistor Size 7 nm 4 nm
Neural Processor Yes Hexagon
Graphics Mali-G77 MP11 Adreno 710
GPU Cores 704 256
GPU Frequency 800 MHz 1010 MHz
FLOPS 1126 GFLOPS 517.1 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy Note 20 Ultra
1173
Xiaomi Redmi Note 15 5G
1015
Geekbench 6 (Multi-Core)
Samsung Galaxy Note 20 Ultra
3168
Xiaomi Redmi Note 15 5G
2890
Geekbench 6 (Single-Core)11731015
Geekbench 6 (Multi-Core)31682890
AnTuTu 10
AnTuTu 10
Samsung Galaxy Note 20 Ultra
765381
Xiaomi Redmi Note 15 5G
608985
CPU207699200717
GPU247886141388
Memory144292118625
UX165504148255
NanoReview Score765381608985
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy Note 20 Ultra
4250
Xiaomi Redmi Note 15 5G
n/a
Max Surface Temp.37.3 °Cn/a
Stability49 %n/a
Graphics Test25 fpsn/a
Graphics Score4250n/a
Sources: 3DMark [Samsung Galaxy Note 20 Ultra]
PCMark 3.0
PCMark 3.0
Samsung Galaxy Note 20 Ultra
10807
Xiaomi Redmi Note 15 5G
n/a
Writing score12145n/a
Web score8848n/a
Video editing6906n/a
Data manipulation8762n/a
NanoReview Score10807n/a

Memory

RAM
RAM Size - 8 GB
- 12 GB		 6 GB
Memory Type LPDDR5 LPDDR4X
Memory Frequency 2750 MHz 2133 MHz
Channels n/a 2
Storage
Storage Capacity- 256 GB
- 512 GB		128 GB
Storage TypeUFS 3.1UFS 2.2
Memory CardMicroSDNo

Software

OS Android 10 (Upgradeable to Android 13) Android 15
OS Size 34.7 GB n/a
UI Skin One UI 5.0 HyperOS 2.0

Battery

Volume 4500 mAh 5800 mAh
Max Charging Power 25 W 45 W
Battery Type Li-Po Li-Po
Removable No No
Wireless Charging Yes (15 W) No
Reverse Charging Yes (Wireless) Yes
Fast Charging Yes (43% in 30 min) Yes
Full Charge Time 1:20 h n/a
Battery Life Test
Battery Life
Samsung Galaxy Note 20 Ultra
18:32
Xiaomi Redmi Note 15 5G
n/a
Web Browsing07:27 hn/a
Video Playback12:33 hn/a
Games05:16 hn/a
Standby Mode81 hn/a

Main camera

Matrix 108 MP 50 MP
Photo resolution 12000x9000 pixels n/a
Zoom Optical, 5x Digital
Flash LED LED
Stabilization Optical Digital
8K Recording Up to 24FPS No
4K Recording Yes (Up to 60 fps) No
1080p Recording Yes (Up to 240 fps) Yes (Up to 30 fps)
Slow Motion 960 fps (720p) n/a
Wide-angle lens 120 ° n/a
Lenses count Standard: 108 MP
Telephoto: 12 MP
Ultra-wide: 12 MP
Depth: 0.3 MP		 Standard: 50 MP
Depth: 2 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
Main lens
Matrix108 MP50 MP
Aperturef/1.8f/1.8
Focal length26 mmn/a
SensorSamsung Bright S5KHM1n/a
Sensor size1/1.331/2
Pixel size0.8 μm0.64 μm
AutofocusLaser autofocusPhase autofocus
StabilizationOpticalDigital
Telephoto
Matrix12 MPn/a
Aperturef/3.0n/a
Focal length103 mmn/a
SensorSamsung S5K3M5n/a
Sensor size1/3.4n/a
Pixel size1 μmn/a
StabilizationOpticaln/a
Ultra-wide lens
Matrix12 MPn/a
Aperturef/2.2n/a
Focal length13 mmn/a
SensorSamsung S5K2L3n/a
Sensor size1/2.55n/a
Pixel size1.4 μmn/a
StabilizationDigitaln/a
Main camera DxOMark results
Photo quality
Samsung Galaxy Note 20 Ultra
122
Xiaomi Redmi Note 15 5G
n/a
Video quality
Samsung Galaxy Note 20 Ultra
106
Xiaomi Redmi Note 15 5G
n/a
Overall camera score
Samsung Galaxy Note 20 Ultra
120
Xiaomi Redmi Note 15 5G
n/a
Sources: DxOMark [Samsung Galaxy Note 20 Ultra]

Front camera

Matrix 10 MP 8 MP
Photo resolution 3872x2592 pixels n/a
Aperture f/2.2 f/2.0
Focal length 26 mm n/a
Sensor Sony IMX374 n/a
Sensor size 1/3.2 n/a
Pixel size 1.22 μm n/a
Autofocus Phase autofocus (Dual Pixel) No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 1080p (Full HD) at 60 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 6 (802.11 a/b/g/n/ac/ax) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.1 5.1
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 3.2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort n/a No
GPS - GPS
- GLONASS
- Beidou
- Galileo
- NAVIC		 - 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 *YesNo
Hybrid SlotYesNo
2G BandsGSM 700 / 800 / 850 / 900 / 1700 / 1800 / 1900 / 2100 / 2600 / 2000 / 2300 / 2500n/a
3G BandsUMTS 850 / 900 / 1700 / 1900 / 2100n/a
LTE Bands*LTE (B700/B800/B850/B900/B1700/B1800/B1900/B2000/B2100/B2300/B2500/B2600)n/a
LTE category20n/a
5G SupportYesYes

Sound

Speakers Stereo n/a
3.5 mm Jack No Yes
FM Radio Yes Yes
Dolby Atmos Yes n/a
Speaker Test
Max Volume
Samsung Galaxy Note 20 Ultra
88.8 dB
Xiaomi Redmi Note 15 5G
n/a

Other

Class Flagship Mid-range
Announced August, 2020 yr August, 2025 yr
Release Date August, 2020 yr August, 2025 yr
Launch Price ($) 1299 n/a
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 Yes, 45 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

No clear favorite identified yet; updates may follow as new data arrives.

Survey

Which smartphone would you pick?
0 (0%)
0 (0%)
Total Votes: 0

User comments

Share your opinion or ask questions below