Home Phone comparison Xiaomi Redmi Note 15 4G and Oppo Find X9 Ultra - Which is better?

Xiaomi Redmi Note 15 4G vs Oppo Find X9 Ultra

64 out 100
Xiaomi Redmi Note 15 4G
VS
96 out 100
Oppo Find X9 Ultra
Xiaomi Redmi Note 15 4G
Oppo Find X9 Ultra

Compared 2 smartphones : Xiaomi Redmi Note 15 4G Manufactured in December, 2025, with display 6.77 with chipsetMediaTek Helio G100 Ultra, vs Oppo Find X9 Ultra, Manufactured in May, 2026with chipsetQualcomm Snapdragon 8 Elite Gen 5. 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 Xiaomi Redmi Note 15 4G
  • Lighter design: 183.7g vs 235g
Reasons to choose Oppo Find X9 Ultra
  • Larger display: 6.82in
  • Higher pixel density: 510ppi
  • Higher refresh rate: 144Hz
  • Higher battery capacity: 7050mAh vs 6000mAh
  • Newer Bluetooth version: 6.0 vs 5.3
  • Supports newer USB: 3.2 vs 2
  • Supports DisplayPort
  • Infrared port
  • Built-in eSIM
  • Includes charger

Versions

Available versions and configurations
Memory Options - 6/128 GB
- 8/128 GB
- 8/256 GB
- 8/512 GB		 - 12/256 GB
- 12/512 GB
- 16/512 GB
- 16/1024 GB

Review

Key Specs Xiaomi Redmi Note 15 4G and Oppo Find X9 Ultra
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:
Redmi Note 15 4G
vs
Oppo Find X9 Ultra

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.77 in 6.82 in
Resolution 1080x2340 pixels 1440x3168 pixels
Aspect ratio n/a 19.8:9
Pixel density 388 ppi 510 ppi
Refresh rate 120 Hz 144 Hz
Adaptive refresh rate Yes (60-120 Hz) Yes (1-120 Hz)
Max brightness n/a 1800 nits
HDR support No Yes, Dolby Vision
Touch Sampling Rate n/a 300 Hz
Screen-to-body ratio 89.7 % 90 %
Features DCI-P3 - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Xiaomi Redmi Note 15 4G
n/a
Oppo Find X9 Ultra
3396 nits

Design & Build

Design and ergonomics comparison
Height 164 mm (6.46 in) 163.16 mm (6.42 in)
Width 75.4 mm (2.97 in) 76.97 mm (3.03 in)
Thickness 7.4 mm (0.29 in) 8.65 mm (0.34 in)
Weight 183.7 g (6.48 oz) 235 g (8.29 oz)
Water resistance IP64 IP69
Cooling system n/a Vapor chamber
Back panel Plastic Glass
Frame Plastic Metal
Colors - Black
- Blue
- Green
- Purple		 - White
- Green
- Orange
Fingerprint sensor Yes, In-Display Yes, In-Display
Screen-to-body ratio
Xiaomi Redmi Note 15 4G
89.7 %
Oppo Find X9 Ultra
90 %

Performance

Testing Xiaomi Redmi Note 15 4G and Oppo Find X9 Ultra In benchmarks
Processor
Chipset MediaTek Helio G100 Ultra Qualcomm Snapdragon 8 Elite Gen 5
Max Frequency 2200 MHz 4600 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6/2 (Cortex-A55)
- 2/2.2 (Cortex-A76)		 - 6/3.63 (Oryon Gen 3 Performance)
- 2/4.61 (Oryon Gen 3 Prime)
Process TSMC TSMC
Transistor Size 6 nm 3 nm
Neural Processor Yes Hexagon
Graphics Mali-G57 MP2 n/a
GPU Cores 64 n/a
GPU Frequency 1000 MHz n/a
FLOPS 128 GFLOPS n/a
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi Redmi Note 15 4G
730
Oppo Find X9 Ultra
3646
Geekbench 6 (Multi-Core)
Xiaomi Redmi Note 15 4G
2025
Oppo Find X9 Ultra
11276
Geekbench 6 (Single-Core)7303646
Geekbench 6 (Multi-Core)202511276
Sources: Geekbench v6 [Oppo Find X9 Ultra]
AnTuTu 10
AnTuTu 10
Xiaomi Redmi Note 15 4G
437184
Oppo Find X9 Ultra
4086107
CPU1327241166693
GPU722381523262
Memory109980509363
UX122242886789
NanoReview Score4371844086107

Memory

RAM
RAM Size 6 GB 12 GB
Memory Type LPDDR4X LPDDR5X
Memory Frequency 2133 MHz 5300 MHz
Channels 2 4
Storage
Storage Capacity128 GB256 GB
Storage TypeUFS 2.2UFS 4.1
Memory CardNoNo

Software

OS Android 15 Android 16
UI Skin HyperOS 2.0 ColorOS 16

Battery

Volume 6000 mAh 7050 mAh
Max Charging Power 33 W 100 W
Battery Type Silicon Carbon (Si/C) Silicon Carbon (Si/C)
Removable No No
Wireless Charging No Yes (50 W)
Reverse Charging Yes Yes, (Wireless)
Fast Charging Yes Yes (75% in 30 min)
Full Charge Time n/a 0:45 h
Battery Life Test
Battery Life
Xiaomi Redmi Note 15 4G
n/a
Oppo Find X9 Ultra
37:00
Web Browsingn/a16:45 h
Video Playbackn/a26:15 h
Gamesn/a08:23 h
Standby Moden/a144 h

Main camera

Matrix 108 MP 200 MP
Zoom Digital Optical, 10x
Flash LED LED
Stabilization Digital Optical
8K Recording No Yes (Up to 30 fps)
4K Recording No Yes (Up to 120 fps)
1080p Recording Yes (Up to 30 fps) Yes (Up to 240 fps)
Slow Motion n/a 480 fps (720p)
Wide-angle lens n/a 120 °
Lenses count Standard: 108 MP
Depth: 2 MP		 Standard: 200 MP
Telephoto: 200 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
Main lens
Matrix108 MP200 MP
Aperturef/1.7f/1.5
Focal length24 mm23 mm
Sensorn/aSony LYTIA-901
Sensor size1/1.67 (0.6)1/1.12 (0.89)
Pixel size0.64 μm0.7 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalOptical
Telephoto
Matrixn/a200 MP
Aperturen/af/2.2
Focal lengthn/a70 mm
Sensorn/aOmniVision OV52A
Sensor sizen/a1/1.28 (0.78)
Pixel sizen/a0.61 μm
Stabilizationn/aOptical
Ultra-wide lens
Matrixn/a50 MP
Aperturen/af/2.0
Focal lengthn/a14 mm
Sensorn/aSony LYTIA-600
Sensor sizen/a1/1.95 (0.51)
Pixel sizen/a0.8 μm
Stabilizationn/aDigital

Front camera

Matrix 20 MP 50 MP
Aperture f/2.2 f/2.4
Focal length n/a 21 mm
Sensor Omnivision OV02F Samsung ISOCELL JN5
Sensor size 1/5 (0.2) 1/2.75 (0.36)
Pixel size 1.75 μm 0.64 μm
Autofocus No Phase autofocus
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 2160p (4K) at 60 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.3 6.0
Bluetooth features LE LE
USB type USB Type-C USB Type-C
USB version 2 3.2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort No Yes
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
- NAVIC
NFC* Varies by region Yes
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoYes
Hybrid SlotNoNo
2G Bandsn/aGSM 850/900/1800/1900MHz
3G Bandsn/aWCDMA 1/2/4/5/6/8/19
LTE Bands*n/aLTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B32/B66/B71)
5G SupportNoYes

Sound

3.5 mm Jack No No
FM Radio Yes No

Other

Class Mid-range Flagship
Announced December, 2025 yr April, 2026 yr
Release Date December, 2025 yr May, 2026 yr
MSRP ($) n/a 1299
Sensors - 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, 100 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Oppo Find X9 Ultra the clear winner in this comparison.

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