Xiaomi 15 Ultra vs OnePlus 15
The Xiaomi 15 Ultra scores 8.8 in our rating, and the OnePlus 15 scores 9.4. The Xiaomi 15 Ultra leads in camera, while the OnePlus 15 is ahead in display, performance, battery and design. The OnePlus 15 is the newer phone, announced Oct 27, 2025.
Key differences
Why choose the Xiaomi 15 Ultra
- Longer optical zoom 4.3× vs 3.5×
- Faster wireless charging 80 W vs 50 W
- More storage 256 GB / 512 GB / 1 TB vs 256 GB / 512 GB
- Higher screen resolution 1440 × 3200 px vs 1272 × 2772 px
- Sharper display 522 ppi vs 450 ppi
Why choose the OnePlus 15
- Bigger battery 7,300 mAh vs 5,410 mAh
- Faster wired charging 120 W vs 90 W
- Bigger screen 6.78 inches vs 6.73 inches
- Higher refresh rate 165 Hz vs 120 Hz
- Better water resistance IP68 + IP69K vs IP68
- Newer model Oct 27, 2025 vs Feb 27, 2025
PhoneRanked scores
Calculated from specs, relative to phones from the same year and price range. How we rate phones
Value for money marked “est.” is an estimate: that phone has no official US launch price, so it is not highlighted against the others.
Spec
Xiaomi 15 UltraOnePlus 15
Overall
8.8
9.4
Display
8.7
8.9
Performance
8.6
9.0
Camera
8.9
8.4
Battery
7.1
8.5
Design
8.1
8.8
Software support
7.4
7.4
Value for money
6.0 est.
7.6
Display
Spec
Xiaomi 15 UltraOnePlus 15
Size
6.73 inches
6.78 inches
Type
OLED, WQHD+ AMOLED (All Around Liquid Display)
OLED
Resolution
1440 × 3200 px
1272 × 2772 px
Pixel density
522 ppi
450 ppi
Refresh rate
120 Hz
165 Hz
Adaptive refresh
✓ Yes
✓ Yes
Peak brightness
3,200 nits
—
HDR
HDR10+, Dolby Vision
HDR10+, HDR Vivid
Protection
Xiaomi Shield Glass 2.0
Gorilla Glass Victus 2
Performance
Spec
Xiaomi 15 UltraOnePlus 15
Process
3 nm
3 nm
Max CPU clock
4.32 GHz
4.61 GHz
GPU
Adreno 830
Adreno 840
RAM
12 GB / 16 GB
12 GB / 16 GB
Storage
256 GB / 512 GB / 1 TB
256 GB / 512 GB
Storage type
UFS 4.1
UFS 4.1
microSD slot
✕ No
✕ No
Cameras
Spec
Xiaomi 15 UltraOnePlus 15
Main camera
50 MP, f/1.63, 1"
50 MP, f/1.8
Optical stabilization
✓ Yes
✓ Yes
Ultrawide
50 MP
50 MP
Telephoto
200 MP, 4.3× optical, periscope
50 MP, 3.5× optical
Optical zoom
4.3×
3.5×
Rear cameras
4
3
Rear video
8K@30
8K@30
Front camera
32 MP
32 MP
Front video
4K@60
4K@60
Battery and charging
Spec
Xiaomi 15 UltraOnePlus 15
Capacity
5,410 mAh
7,300 mAh
Battery type
—
Silicon-carbon
Wired charging
90 W
120 W
Wireless charging
80 W
50 W
Reverse wireless
—
✕ No
Charger in box
✕ No
✓ Yes
Design and build
Spec
Xiaomi 15 UltraOnePlus 15
Dimensions
161.3 × 75.3 × 9.35 mm
161.42 × 76.67 × 8.1 mm
Thickness
9.35 mm
8.1 mm
Weight
226 g
211 g
Form factor
Bar
Bar
Frame
Aluminum
—
Back
Fiberglass
Fiberglass
Water resistance
IP68
IP68 + IP69K
Fingerprint
Under-display ultrasonic
Under-display ultrasonic
3D face unlock
✕ No
✕ No
SIM
Dual Nano-SIM + eSIM
Dual Nano-SIM + eSIM
Colors
Silver Chrome, Black, White, Pine Green (China)
Sand Storm, Infinite Black, Ultra Violet
Connectivity and features
Spec
Xiaomi 15 UltraOnePlus 15
5G
✓ Yes
✓ Yes
Wi-Fi
Wi-Fi 7
Wi-Fi 7
Bluetooth
6.0
6.0
USB
USB-C 3.x
USB-C 3.x
NFC
✓ Yes
✓ Yes
3.5 mm jack
✕ No
✕ No
Stereo speakers
✓ Yes
✓ Yes
Satellite
✕ No
✕ No
IR blaster
✓ Yes
✓ Yes
Software
Spec
Xiaomi 15 UltraOnePlus 15
OS at launch
Android 15
Android 16
Interface
Xiaomi HyperOS 2
OxygenOS 16
OS updates
4 years
4 years
Security updates
6 years
6 years
Launch and price
Spec
Xiaomi 15 UltraOnePlus 15
Announced
Feb 27, 2025
Oct 27, 2025
Status
Released
Released
US launch price
—
$899.99
Green marks the stronger value in a row. Specs come from official manufacturer data, cross-checked with established tech media; each phone page lists its sources. Report an error
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