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OnePlus 9
OnePlus OnePlus 9
2.6
Price TBA
View Details
Xiaomi 15 Ultra
Xiaomi Xiaomi 15 Ultra
512GB · 16GB RAM
4.3
From $1,099
View Details
★ Our Pick

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 OnePlus 9 Xiaomi 15 Ultra
Display size (in) 6.55 6.73
Charging (W) 65 90
Main camera (MP) 48.00 50.00
Selfie (MP) 16.00 32.00
Weight (g) 192 226
Thickness (mm) 8.70 9.35
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Snapdragon 8 Elite
OS Android 11, upgradable to Android 13, OxygenOS 13 Android 15, HyperOS 2

Pros & Cons

OnePlus 9

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
OnePlus
OnePlus 9
Xiaomi
Xiaomi 15 Ultra
Battery 3 specs
Type
Li-Po 4500 mAh
Market-dependent versions:· Si/C Li-Ion 5410 mAh - Global· Si/C Li-Ion 6000 mAh - China
Charging
65W wired, PD, 100% in 29 min 15W wireless (EU/NA)
90W wired, 80W wireless
Capacity
5410 mAh
Body 5 specs
Dimensions
160 x 74.2 x 8.7 mm (EU/NA)160 x 73.9 x 8.1 mm (IN/CN)
161.3 x 75.3 x 9.35 mm
Weight
192 g (EU/NA)183 g (IN/CN) (6.46 oz)
226 g
Build
Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame
Glass front, glass-fiber reinforced plastic back or silicone polymer back (eco leather), aluminum frame
SIM
· Nano-SIM· Nano-SIM + Nano-SIM
· Nano-SIM + Nano-SIM· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
 
IP68 dust tight and water resistant (T-Mobile version only)
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, dual-band, Wi-Fi Direct, DLNA
Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct
Bluetooth
5.2, A2DP, LE, aptX HD
6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
Positioning
GPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a)
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
NFC
Yes
Yes
Radio
No
No
USB
USB Type-C 3.1, OTG
USB Type-C 3.2 Gen 2, DisplayPort, OTG
Infrared port
Yes
5G
Yes
Display 4 specs
Type
Fluid AMOLED, 120Hz, HDR10+, 1100 nits (peak)
LTPO AMOLED
Size
6.55 inches, 103.6 cm2 (~87.6% screen-to-body ratio)
6.73 inches
Resolution
1080 x 2400 pixels, 20:9 ratio (~402 ppi density)
1440 x 3200 pixels
Protection
Corning Gorilla Glass 5
Xiaomi Shield Glass 2.0, Mohs level 6
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
2021, March 23
2025, February 27
Status
Available. Released 2021, March 26
Available. Released 2025, February 27
Main Camera 4 specs
Triple
48 MP, f/1.8, 23mm (wide), 1/1.43", 1.12µm, multi-directional PDAF 50 MP, f/2.2, 14mm (ultrawide), 1/1.56", 1.0µm, AF 2 MP, f/2.4, (monochrome)
Features
Hasselblad Color Calibration, color spectrum sensor, dual-LED flash, HDR, panorama
Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)
Video
8K@30fps, 4K@30/60fps, 1080p@30/60/240fps, Auto HDR, gyro-EIS
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
128GB 8GB RAM, 256GB 12GB RAM
256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
 
UFS 3.1
UFS 4.1
RAM
16GB
Storage
512GB
Misc 4 specs
Colors
Winter Mist, Arctic Sky, Astral Black
Black, White, Silver Chrome, Green
Models
LE2113, LE2111, LE2110, LE2117, LE2115
25010PN30G
Price
$ 158.44 / £ 189.99 / € 152.07
$ 693.75 / £ 1,295.00 / € 812.34
SAR EU
1.00 W/kg (head)     1.00 W/kg (body)    
Network 7 specs
Technology
GSM / CDMA / HSPA / LTE / 5G
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900
GSM 850 / 900 / 1800 / 1900
 
1, 3, 28, 41, 78, 79 SA/NSA - CN
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
3G bands
HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - EU
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
5G bands
1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 78 SA/NSA - EU
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 42.2/5.76 Mbps, LTE Cat20 2000/200 Mbps, 5G
HSPA, LTE, 5G
Our Tests 5 specs
Display
821 nits max brightness (measured)
Camera
Photo / Video
Loudspeaker
-24.5 LUFS (Very good)
-24.1 LUFS (Very good)
Battery (old)
Endurance rating 87h
Battery
Active use score 16:13h
Platform 4 specs
OS
Android 11, upgradable to Android 13, OxygenOS 13
Android 15, HyperOS 2
Chipset
Qualcomm SM8350 Snapdragon 888 5G (5 nm)
Snapdragon 8 Elite
CPU
Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55)
Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
GPU
Adreno 660
Adreno 830
Selfie Camera 3 specs
Single
16 MP, f/2.4, (wide), 1/3.06", 1.0µm
32 MP
Features
HDR
HDR, panorama
Video
1080p@30fps, 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 audio
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.