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Compare features, prices and ratings to find the perfect phone for you.
Our Verdict
Analysis
Xiaomi 15 Ultra has the bigger display.
Overall Winner
Xiaomi 15 Ultra
Display Winner
Xiaomi 15 Ultra
Performance Winner
Tie
Camera Winner
Tie
Battery Winner
Tie
Value Winner
Tie
Specifications Comparison
| Feature | Oppo Find X8 | Xiaomi 15 Ultra |
|---|---|---|
| Display size (in) | 6.59 | 6.73 |
| Charging (W) | 80 | 90 |
| Weight (g) | 193 | 226 |
| Thickness (mm) | 7.90 | 9.35 |
| Chipset | Mediatek Dimensity 9400 (3 nm) | Snapdragon 8 Elite |
| OS | Android 15, up to 5 major Android upgrades, ColorOS 15 | Android 15, HyperOS 2 |
Pros & Cons
Oppo Find X8
Xiaomi 15 Ultra
- Outstanding camera versatility
- Fast wired and wireless charging
- Bright display
- Heavy
- Software still polishing animations
- Limited availability in some regions
Every Spec, Side by Side
Specification
Oppo
Oppo Find X8
Xiaomi
Xiaomi 15 Ultra
Battery 3 specs
Type
Si/C Li-Ion 5630 mAh
Market-dependent versions:· Si/C Li-Ion 5410 mAh - Global· Si/C Li-Ion 6000 mAh - China
Charging
80W wired, PD 55W, PPS, UFCS
50W wireless
10W reverse wireless
90W wired, 80W wireless
Capacity
—
5410 mAh
Body 5 specs
Dimensions
157.4 x 74.3 x 7.9 mm (6.20 x 2.93 x 0.31 in)
161.3 x 75.3 x 9.35 mm
Weight
193 g (6.81 oz)
226 g
Build
Glass front (Gorilla Glass 7i), glass back (Gorilla Glass 7i), aluminum frame
Glass front, glass-fiber reinforced plastic back or silicone polymer back (eco leather), aluminum frame
SIM
· Nano-SIM + eSIM· Nano-SIM + Nano-SIM
· Nano-SIM + Nano-SIM· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)
Aerospace-grade glass fiber
Connectivity 8 specs
WLAN
Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct
Bluetooth
5.4, A2DP, LE, aptX HD, LHDC 5
6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
Positioning
GPS (L1+L5), BDS (B1I+B1c+B2a+B2b), GALILEO (E1+E5a+E5b), QZSS (L1+L5), GLONASS, NavIC (L5)
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
NFC
Yes
Yes
Infrared port
Yes
Yes
Radio
No
No
USB
USB Type-C 3.0 (Global), 2.0 (China), OTG
USB Type-C 3.2 Gen 2, DisplayPort, OTG
5G
—
Yes
Display 5 specs
Type
AMOLED, 1B colors, 120Hz, 3840Hz PWM, Dolby Vision, HDR10+, 800 nits (typ), 1600 nits (HBM), 4500 nits (peak)
LTPO AMOLED
Size
6.59 inches, 105.6 cm2 (~90.3% screen-to-body ratio)
6.73 inches
Resolution
1256 x 2760 pixels (~460 ppi density)
1440 x 3200 pixels
Protection
Corning Gorilla Glass 7i
Xiaomi Shield Glass 2.0, Mohs level 6
Ultra HDR image support
—
Features 2 specs
Sensors
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
—
Two-way satellite communication (China model only)
Launch 2 specs
Announced
2024, October 24
2025, February 27
Status
Available. Released 2024, October 30
Available. Released 2025, February 27
Main Camera 4 specs
Triple
50 MP, f/1.8, 24mm (wide), 1/1.56", 1.0µm, multi-directional PDAF, OIS
50 MP, f/2.6, 73mm (periscope telephoto), 1/1.95", 0.61µm, 3x optical zoom, multi-directional PDAF, OIS
50 MP, f/2.0, 15mm, 120˚ (ultrawide), 1/2.76", 0.64µm, multi-directional PDAF
—
Features
Laser AF, color spectrum sensor, Hasselblad Color Calibration, LED flash, HDR, panorama
Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)
Video
4K@30/60fps, 1080p@30/60/240fps; gyro-EIS; HDR, 10‑bit video, Dolby Vision
8K@30fps, 4K@30/60/120fps, 1080p@30/60/120/240/480/960/1920fps, gyro-EIS, Dolby Vision HDR 10-bit rec. (4K@60fps, 1080p)
Quad
—
50 MP + 50 MP + 200 MP + 50 MP
Memory 5 specs
Card slot
No
No
Internal
256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
UFS 4.0
UFS 4.1
RAM
—
16GB
Storage
—
512GB
Misc 4 specs
Colors
Star Grey, Space Black, Shell Pink, Blue
Black, White, Silver Chrome, Green
Models
CPH2651, PKB110
25010PN30G
Price
₹ 59,999
$ 693.75 / £ 1,295.00 / € 812.34
SAR EU
—
1.00 W/kg (head) 1.00 W/kg (body)
Network 7 specs
Technology
GSM / HSPA / LTE / 5G
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 38, 39, 40, 41, 42, 66 - International
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 42, 48, 66, 71 - International
1, 3, 5, 7, 8, 28, 38, 40, 41, 66, 77, 78 SA/NSA - China
1, 2, 3, 5, 7, 8, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 79, 80, 81, 83, 84, 89 SA/NSA - China
5G bands
1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA - International
1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 48, 66, 71, 75, 77, 78, 79 SA/NSA - International
Speed
HSPA, LTE, 5G
HSPA, LTE, 5G
Our Tests 4 specs
Performance
AnTuTu: 2751909 (v10)
GeekBench: 8885 (v6)
3DMark: 6513 (Wild Life Extreme)
—
Display
1364 nits max brightness (measured)
—
Loudspeaker
-24.0 LUFS (Very good)
-24.1 LUFS (Very good)
Battery
Active use score 13:58h
Active use score 16:13h
Platform 4 specs
OS
Android 15, up to 5 major Android upgrades, ColorOS 15
Android 15, HyperOS 2
Chipset
Mediatek Dimensity 9400 (3 nm)
Snapdragon 8 Elite
CPU
Octa-core (1x3.63 GHz Cortex-X925 & 3x3.3 GHz Cortex-X4 & 4x2.4 GHz Cortex-A720)
Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
GPU
Immortalis-G925
Adreno 830
Selfie Camera 3 specs
Single
32 MP, f/2.4, 21mm (wide), 1/2.74", 0.8µm
32 MP
Features
Panorama
HDR, panorama
Video
4K@30/60fps, 1080p@30/60fps, gyro-EIS
4K@30/60fps, 1080p@30/60fps, gyro-EIS
Sound 3 specs
Loudspeaker
Yes, with stereo speakers
Yes, with stereo speakers
3.5mm jack
No
No
—
24-bit/192kHz Hi-Res & Hi-Res Wireless audio
Qualcomm XPAN (24-bit/96kHz audio)
Eu Label 4 specs
Energy
—
Class A
Battery
—
58:58h endurance, 1000 cycles
Free fall
—
Class C (90 falls)
Repairability
—
Class C
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Common Questions
Which phone is the best in this comparison?
Xiaomi 15 Ultra has the bigger display.
How are the comparison winners decided?
We compare measurable specs (display size, battery capacity, RAM, charging, weight) and price (USD). When two phones tie or data is missing we mark the category "Depends".
Which is more affordable?
The cheaper option is shown as the value winner above. Prices are USD and may vary by region or retailer.