Xiaomi 17 Ultra vs Xiaomi 15 Ultra
The Xiaomi 17 Ultra scores 8.7 in our rating, and the Xiaomi 15 Ultra scores 8.9. The Xiaomi 17 Ultra leads in performance, battery and design, while the Xiaomi 15 Ultra is ahead in software support. The Xiaomi 17 Ultra is the newer phone, announced Dec 25, 2025.
Key differences
Why choose the Xiaomi 17 Ultra
- Bigger battery 6,000 mAh vs 5,410 mAh
- Bigger screen 6.9 inches vs 6.73 inches
- Brighter screen 3,500 nits vs 3,200 nits
- Newer model Dec 25, 2025 vs Feb 27, 2025
- Lighter 218.4 g vs 226 g
- Thinner 8.29 mm vs 9.35 mm
Why choose the Xiaomi 15 Ultra
- Faster wireless charging 80 W vs 50 W
- Higher screen resolution 1440 × 3200 px vs 1200 × 2608 px
- Sharper display 522 ppi vs 416 ppi
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 17 UltraXiaomi 15 Ultra
Overall
8.7
8.9
Display
8.5
8.7
Performance
9.0
8.6
Camera
8.9
8.9
Battery
8.0
7.4
Design
8.3
8.1
Software support
3.5
7.4
Value for money
6.0 est.
6.0 est.
Display
Spec
Xiaomi 17 UltraXiaomi 15 Ultra
Size
6.9 inches
6.73 inches
Type
OLED, Xiaomi HyperRGB OLED
OLED, WQHD+ AMOLED (All Around Liquid Display)
Resolution
1200 × 2608 px
1440 × 3200 px
Pixel density
416 ppi
522 ppi
Refresh rate
120 Hz
120 Hz
Adaptive refresh
✓ Yes
✓ Yes
Peak brightness
3,500 nits
3,200 nits
HDR
HDR10, HDR10+, Dolby Vision, HDR Vivid
HDR10+, Dolby Vision
Protection
Xiaomi Shield Glass 3.0
Xiaomi Shield Glass 2.0
Performance
Spec
Xiaomi 17 UltraXiaomi 15 Ultra
Process
3 nm
3 nm
Max CPU clock
4.6 GHz
4.32 GHz
GPU
Adreno 840
Adreno 830
RAM
16 GB
12 GB / 16 GB
Storage
512 GB / 1 TB
256 GB / 512 GB / 1 TB
Storage type
UFS 4.1
UFS 4.1
microSD slot
✕ No
✕ No
Cameras
Spec
Xiaomi 17 UltraXiaomi 15 Ultra
Main camera
50 MP, f/1.67, 1"
50 MP, f/1.63, 1"
Optical stabilization
✓ Yes
✓ Yes
Ultrawide
50 MP
50 MP
Telephoto
200 MP, 4.3× optical, periscope
200 MP, 4.3× optical, periscope
Optical zoom
4.3×
4.3×
Rear cameras
3
4
Rear video
8K@30
8K@30
Front camera
50 MP
32 MP
Front video
4K@60
4K@60
Battery and charging
Spec
Xiaomi 17 UltraXiaomi 15 Ultra
Capacity
6,000 mAh
5,410 mAh
Battery type
Silicon-carbon
—
Wired charging
90 W
90 W
Wireless charging
50 W
80 W
Reverse wireless
✓ Yes
—
Charger in box
✕ No
✕ No
Design and build
Spec
Xiaomi 17 UltraXiaomi 15 Ultra
Dimensions
162.9 × 77.6 × 8.29 mm
161.3 × 75.3 × 9.35 mm
Thickness
8.29 mm
9.35 mm
Weight
218.4 g
226 g
Form factor
Bar
Bar
Frame
Aluminum
Aluminum
Back
Fiberglass
Fiberglass
Water resistance
IP68
IP68
Fingerprint
Under-display ultrasonic
Under-display ultrasonic
3D face unlock
✕ No
✕ No
SIM
Dual Nano-SIM + eSIM
Dual Nano-SIM + eSIM
Colors
Starlit Green, Black, White
Silver Chrome, Black, White, Pine Green (China)
Connectivity and features
Spec
Xiaomi 17 UltraXiaomi 15 Ultra
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 17 UltraXiaomi 15 Ultra
OS at launch
Android 16
Android 15
Interface
Xiaomi HyperOS 3
Xiaomi HyperOS 2
OS updates
—
4 years
Security updates
—
6 years
Launch and price
Spec
Xiaomi 17 UltraXiaomi 15 Ultra
Announced
Dec 25, 2025
Feb 27, 2025
Released
Dec 27, 2025
—
Status
Released
Released
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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