Home Phone comparison Oppo Find X9 Ultra and Xiaomi 18 Fold - Which is better?

Oppo Find X9 Ultra vs Xiaomi 18 Fold

96 out 100
Oppo Find X9 Ultra
VS
89 out 100
Xiaomi 18 Fold
Oppo Find X9 Ultra
Xiaomi 18 Fold

Compared 2 smartphones : Oppo Find X9 Ultra Manufactured in May, 2026, with display 6.82 with chipsetQualcomm Snapdragon 8 Elite Gen 5, vs Xiaomi 18 Fold, Manufactured in September, 2026 with chipsetXRing O3. 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 Oppo Find X9 Ultra
  • Higher pixel density: 510ppi
  • Higher refresh rate: 144Hz
  • Higher battery capacity: 7050mAh vs 6000mAh
  • Built-in eSIM
Reasons to choose Xiaomi 18 Fold
  • Larger display: 7.58in
  • Lighter design: 219g vs 235g
  • Supports Dolby Atmos

Versions

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

Review

Key Specs Oppo Find X9 Ultra and Xiaomi 18 Fold
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:
Oppo Find X9 Ultra
vs
Xiaomi 18 Fold

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.82 in 7.58 in
Resolution 1440x3168 pixels 2364x1672 pixels
Aspect ratio 19.8:9 3:2
Pixel density 510 ppi 382 ppi
Refresh rate 144 Hz 120 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes (1-120 Hz)
Max brightness 1800 nits n/a
HDR support Yes, Dolby Vision Yes, Dolby Vision
Touch Sampling Rate 300 Hz n/a
Screen-to-body ratio 90 % 88.7 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Oppo Find X9 Ultra
3396 nits
Xiaomi 18 Fold
n/a

Design & Build

Design and ergonomics comparison
Height 163.16 mm (6.42 in) 163.8 mm (6.45 in)
Width 76.97 mm (3.03 in) 117.8 mm (4.64 in)
Thickness 8.65 mm (0.34 in) 5.02 mm (0.2 in)
Weight 235 g (8.29 oz) 219 g (7.72 oz)
Water resistance IP69 IP59
Cooling system Vapor chamber Vapor chamber
Back panel Glass Glass
Frame Metal Metal
Colors - White
- Green
- Orange		 - Silver
- Gray
- Red
- Rose Gold
Fingerprint sensor Yes, In-Display Yes, In-Button
Screen-to-body ratio
Oppo Find X9 Ultra
90 %
Xiaomi 18 Fold
88.7 %

Performance

Testing Oppo Find X9 Ultra and Xiaomi 18 Fold In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Elite Gen 5 XRing O3
Max Frequency 4600 MHz 4350 MHz
CPU Cores 8 (2 + 6) 10 (2 + 4 + 4)
Architecture - 6/3.63 (Oryon Gen 3 Performance)
- 2/4.61 (Oryon Gen 3 Prime)		 - 4/3.15 (C1-Pro)
- 4/3.68 (C1-Premium)
- 2/4.35 (C1-Ultra)
Process TSMC TSMC
Transistor Size 3 nm 3 nm
Neural Processor Hexagon Yes
GeekBench v6
Geekbench 6 (Single-Core)
Oppo Find X9 Ultra
3646
Xiaomi 18 Fold
3636
Geekbench 6 (Multi-Core)
Oppo Find X9 Ultra
11276
Xiaomi 18 Fold
13491
Geekbench 6 (Single-Core)36463636
Geekbench 6 (Multi-Core)1127613491
Sources: Geekbench v6 [Oppo Find X9 Ultra], [Xiaomi 18 Fold]
AnTuTu 10
AnTuTu 10
Oppo Find X9 Ultra
4086107
Xiaomi 18 Fold
5228014
CPU11666931359147
GPU15232622143582
Memory509363941063
UX886789784222
NanoReview Score40861075228014

Memory

RAM
RAM Size 12 GB 12 GB
Memory Type LPDDR5X LPDDR5X
Memory Frequency 5300 MHz n/a
Channels 4 4
Storage
Storage Capacity256 GB256 GB
Storage TypeUFS 4.1UFS 4.1
Memory CardNoNo

Software

OS Android 16 Android 17
UI Skin ColorOS 16 HyperOS 4

Battery

Volume 7050 mAh 6000 mAh
Max Charging Power 100 W 67 W
Battery Type Silicon Carbon (Si/C) Silicon Carbon (Si/C)
Removable No No
Wireless Charging Yes (50 W) Yes (50 W)
Reverse Charging Yes, (Wireless) Yes, (Wireless)
Fast Charging Yes (75% in 30 min) Yes
Full Charge Time 0:45 h n/a
Battery Life Test
Battery Life
Oppo Find X9 Ultra
37:00
Xiaomi 18 Fold
n/a
Web Browsing16:45 hn/a
Video Playback26:15 hn/a
Games08:23 hn/a
Standby Mode144 hn/a

Main camera

Matrix 200 MP 200 MP
Zoom Optical, 10x Optical, 3.5x
Flash LED n/a
Stabilization Optical Optical
8K Recording Yes (Up to 30 fps) n/a
4K Recording Yes (Up to 120 fps) n/a
1080p Recording Yes (Up to 240 fps) n/a
Slow Motion 480 fps (720p) n/a
Wide-angle lens 120 ° n/a
Lenses count Standard: 200 MP
Telephoto: 200 MP
Telephoto: 50 MP
Ultra-wide: 50 MP		 Standard: 200 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Features - Bokeh effect
- Pro mode
Main lens
Matrix200 MP200 MP
Aperturef/1.5f/1.7
Focal length23 mm23 mm
SensorSony LYTIA-901Samsung ISOCELL HP5
Sensor size1/1.12 (0.89)1/1.56 (0.64)
Pixel size0.7 μm0.5 μm
AutofocusPhase autofocusLaser autofocus
StabilizationOpticalOptical
Telephoto
Matrix200 MP50 MP
Aperturef/2.2f/2.8
Focal length70 mm80 mm
SensorOmniVision OV52ASamsung S5KJN5
Sensor size1/1.28 (0.78)1/2.76 (0.36)
Pixel size0.61 μm0.64 μm
StabilizationOpticalOptical
Ultra-wide lens
Matrix50 MP50 MP
Aperturef/2.0f/2.4
Focal length14 mmn/a
SensorSony LYTIA-600Omnivision OV50M
Sensor size1/1.95 (0.51)1/2.76 (0.36)
Pixel size0.8 μm0.61 μm
StabilizationDigitalDigital

Front camera

Matrix 50 MP 16 MP
Aperture f/2.4 f/2.2
Focal length 21 mm 21 mm
Sensor Samsung ISOCELL JN5 n/a
Sensor size 1/2.75 (0.36) n/a
Pixel size 0.64 μm n/a
Autofocus Phase autofocus n/a
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps n/a
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- 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 6.0 6.0
Bluetooth features LE LE
USB type USB Type-C USB Type-C
USB version 3.2 3.2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort Yes Yes
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
- NAVIC		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port Yes Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G BandsGSM 850/900/1800/1900MHzGSM B2 / B3 / B5 / B8
3G BandsWCDMA 1/2/4/5/6/8/19WCDMA B1 / B2 / B4 / B5 / B6 / B8 / B19
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B32/B66/B71)LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B34/B38/B39/B40/B41/B42/B48/B66)
5G SupportYesYes

Sound

3.5 mm Jack No No
FM Radio No No
Dolby Atmos n/a Yes

Other

Class Flagship Flagship
Announced April, 2026 yr September, 2026 yr
Release Date May, 2026 yr September, 2026 yr
MSRP ($) 1299 1640
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes, 100 W Yes, 67 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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