Xiaomi 15 Ultra
#17
Xiaomi Mix 4
#246Category Breakdown
Xiaomi 15 Ultra
Xiaomi Mix 4
Performance
97.190.7
Camera
99.697.4
Display
99.194.3
Battery
97.591.2
Build
77.382.1
Connectivity
88.484.5
Audio
87.687.6
Overall
94.783.9
Summary
- The Xiaomi 15 Ultra features a more advanced build quality with a glass-fiber or eco leather back and a higher peak brightness of 3200 nits compared to the Xiaomi Mix 4's ceramic back and 800 nits, enhancing outdoor visibility.
- The 15 Ultra's LTPO AMOLED display measures 6.73 inches with a resolution of 1440 x 3200 pixels, offering superior pixel density and HDR capabilities over the 6.67-inch AMOLED display of the Mix 4, which has a resolution of 1080 x 2400 pixels.
- In terms of performance, the 15 Ultra is powered by the Snapdragon 8 Elite chipset, providing a significant boost in processing power over the Snapdragon 888+ in the Mix 4.
- The camera system on the 15 Ultra is more versatile, featuring a 50 MP wide, 50 MP telephoto, and a 200 MP periscope lens, compared to the Mix 4's 108 MP wide and 8 MP periscope, allowing for enhanced photography options.
- Battery capacity is also greater in the 15 Ultra at 5410 mAh, supporting 90W charging, while the Mix 4 has a 4500 mAh battery with 120W charging.
- Finally, the 15 Ultra runs on Android 15 with HyperOS 2, offering a more updated software experience compared to the Mix 4's Android 11 with MIUI 12.5.
Side-by-side Specification Comparison
Xiaomi 15 Ultra
Xiaomi Mix 4
General
Release Date
2025, February 27
2021, August 10
Announced
2025, February 27
2021, August 10
Description
N/A
N/A
Display
Size
6.73"
6.67"
Type
LTPO AMOLED, 68B colors, 120Hz, Dolby Vision, HDR10+, HDR Vivid, 3200 nits (peak)
AMOLED, 1B colors, 120Hz, HDR10+, Dolby Vision, 800 nits (HBM)
Resolution
1440 x 3200 pixels, 20:9 ratio (~522 ppi density)
1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
PPI
1440
1080
Refresh Rate
120Hz
120Hz
HDR Support
✓
✓
Protection
Xiaomi Shield Glass 2.0
Corning Gorilla Glass Victus
Performance
Chipset
Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm)
Qualcomm SM8350 Snapdragon 888+ 5G (5 nm)
CPU
Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
Octa-core (1x2.99 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55)
GPU
Adreno 830
Adreno 660
Memory
256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM
Expandable Storage
✗
✗
Card Slot
No
No
Camera
Main Camera
50 MP, f/1.6, 23mm (wide), 1.0"-type, 1.6µm, dual pixel PDAF, OIS50 MP, f/1.8, 70mm (telephoto), 1/2.51", 0.7µm, dual pixel PDAF (10cm - ∞), OIS, 3x optical zoom200 MP, f/2.6, 100mm (periscope telephoto), 1/1.4", 0.56µm, multi-directional PDAF, OIS, 4.3x optical zoom50 MP, f/2.2, 14mm, 115˚ (ultrawide), 1/2.76", 0.64µm, dual pixel PDAFTOF 3D, (depth)
108 MP, f/1.9, 24mm (wide), 1/1.33", 0.8µm, PDAF, OIS8 MP, f/4.1, 120mm (periscope telephoto), PDAF, OIS, 5x optical zoom13 MP, f/2.2, 12mm, 123˚ (ultrawide), 1/3.06", 1.12µm
Main Camera Features
Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)
Laser AF, color spectrum sensor, Dual-LED flash, HDR, panorama
Front Camera
32 MP, f/2.0, 21mm (wide), 1/3.14", 0.7µm
20 MP, 27mm (wide), 1/3.4", 0.8µm, under display
Front Camera Features
HDR, panorama
HDR
Video Recording
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)
8K@24fps, 4K@30/60fps, 1080p@30/60/120/480fps; gyro-EIS, HDR10+
Selfie Video
4K@30/60fps, 1080p@30/60fps, gyro-EIS
1080p@30fps
Optical Stabilization
✓
✓
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
5410 mAh
4500 mAh
Battery Details
Si/C Li-Ion 5410 mAh - GlobalSi/C Li-Ion 6000 mAh - China
Li-Po 4500 mAh
Charging Details
90W wired, PD3.0, QC3+80W wireless10W reverse wireless
120W wired, PD3.0, QC4, 100% in 15 min50W wireless, 100% in 28 min
Fast Charging
✗
✗
Wireless Charging
✓
✓
Build & Safety
Dimensions
161.3 x 75.3 x 9.4 mm (6.35 x 2.96 x 0.37 in)
162.6 x 75.4 x 8 mm (6.40 x 2.97 x 0.31 in)
Weight
226 g
225 g
Materials
Glass front, glass-fiber back or silicone polymer back (eco leather), aluminum frame
Glass front (Gorilla Glass Victus), ceramic back, aluminum frame
Colors
Black, White, Silver Chrome, Green
Ceramic Black, Ceramic White, Shadow Gray
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Nano-SIM + Nano-SIMNano-SIM + Nano-SIM +eSIM+ eSIM (max 2 at a time)
Nano-SIM + Nano-SIM
Network
GSM / HSPA / LTE / 5G
GSM / CDMA / HSPA / EVDO / LTE / 5G
Network Speed
HSPA, LTE, 5G
HSPA, LTE, 5G
5G
✓
✓
4G
✓
✓
WiFi
Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct
Bluetooth
6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
5.2, A2DP, LE, aptX HD
NFC
✓
✓
USB
USB Type-C 3.2 Gen 2, DisplayPort, OTG
USB Type-C 2.0
IR Blaster
✗
✗
Headphone Jack
✗
✗
Radio
✗
✗
Positioning
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
GPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)
Audio
Stereo Speakers
✓
✓
Loudspeaker
Yes, with stereo speakers
Yes, with stereo speakers
Audio Jack
No
No
Software & Security
Operating System
Android 15, up to 4 major Android upgrades, HyperOS 2
Android 11, MIUI 12.5
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass