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Xiaomi 15 Ultra
Xiaomi Xiaomi 15 Ultra
512GB · 16GB RAM
4.3
From $1,099
View Details
★ Our Pick
Xiaomi Mi 4c
Xiaomi Xiaomi Mi 4c
2.1
Price TBA
View Details

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 Xiaomi 15 Ultra Xiaomi Mi 4c
Display size (in) 6.73 5.00
Charging (W) 90 18
Main camera (MP) 50.00 13.00
Selfie (MP) 32.00 5.00
Weight (g) 226 132
Thickness (mm) 9.35 7.80
Chipset Snapdragon 8 Elite Qualcomm MSM8992 Snapdragon 808 (20 nm)
OS Android 15, HyperOS 2 Android 5.1.1 (Lollipop), upgradable to 7.0 (Nougat), MIUI 10

Pros & Cons

Xiaomi 15 Ultra

  • Outstanding camera versatility
  • Fast wired and wireless charging
  • Bright display
  • Heavy
  • Software still polishing animations
  • Limited availability in some regions

Xiaomi Mi 4c

Every Spec, Side by Side

Specification
Xiaomi
Xiaomi 15 Ultra
Xiaomi
Xiaomi Mi 4c
Battery 3 specs
Type
Market-dependent versions:· Si/C Li-Ion 5410 mAh - Global· Si/C Li-Ion 6000 mAh - China
Li-Ion 3080 mAh, non-removable
Capacity
5410 mAh
Charging
90W wired, 80W wireless
18W wired, QC2, 40% in 60 min
Body 5 specs
Build
Glass front, glass-fiber reinforced plastic back or silicone polymer back (eco leather), aluminum frame
Glass front, plastic back, plastic frame
SIM
· Nano-SIM + Nano-SIM· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
Dual SIM
 
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Aerospace-grade glass fiber
Weight
226 g
132 g (4.66 oz)
Dimensions
161.3 x 75.3 x 9.35 mm
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in)
Connectivity 8 specs
WLAN
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, dual-band, Wi-Fi Direct, hotspot
Bluetooth
6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
4.1, A2DP
Positioning
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
GPS, GLONASS, BDS
Infrared port
Yes
Yes
Radio
No
No
USB
USB Type-C 3.2 Gen 2, DisplayPort, OTG
USB Type-C
5G
Yes
NFC
Yes
No
Display 4 specs
Type
LTPO AMOLED
IPS LCD
Protection
Xiaomi Shield Glass 2.0, Mohs level 6
Size
6.73 inches
5.0 inches, 68.9 cm2 (~71.7% screen-to-body ratio)
Resolution
1440 x 3200 pixels
1080 x 1920 pixels, 16:9 ratio (~441 ppi density)
Eu Label 4 specs
Energy
Class A
Battery
58:58h endurance, 1000 cycles
Free fall
Class C (90 falls)
Repairability
Class C
Features 2 specs
Sensors
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
Accelerometer, gyro, proximity, compass
 
Two-way satellite communication (China model only)
Launch 2 specs
Announced
2025, February 27
2015, September. Released 2015, September
Status
Available. Released 2025, February 27
Discontinued
Main Camera 4 specs
Features
Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)
Dual-LED dual-tone flash, panorama, HDR
Video
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)
1080p@30fps
Quad
50 MP + 50 MP + 200 MP + 50 MP
Single
13 MP, f/2.0, 24mm (wide), 1/3.1", 1.12µm, PDAF
Memory 5 specs
Card slot
No
No
Internal
256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
16GB 2GB RAM, 32GB 3GB RAM
 
UFS 4.1
eMMC 5.0
RAM
16GB
Storage
512GB
Misc 4 specs
Colors
Black, White, Silver Chrome, Green
White, grey, pink, yellow, blue
Models
25010PN30G
Mi-4c
SAR EU
1.00 W/kg (head)     1.00 W/kg (body)    
Price
$ 693.75 / £ 1,295.00 / € 812.34
About 210 EUR
Network 7 specs
Technology
GSM / HSPA / LTE / 5G
GSM / HSPA / LTE
2G bands
GSM 850 / 900 / 1800 / 1900
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 850 / 900 / 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, 42, 48, 66, 71 - International
1, 3, 7, 38, 39, 40, 41
 
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
TD-SCDMA
5G bands
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 Cat4 150/50 Mbps
Our Tests 7 specs
Loudspeaker
-24.1 LUFS (Very good)
Voice 73dB / Noise 66dB / Ring 77dB
Battery
Active use score 16:13h
Performance
Basemark OS II 2.0: 1233Basemark X: 12096
Display
Contrast ratio: 1609 (nominal), 2.574(sunlight)
Camera
Photo / Video
Audio quality
Noise -94.7dB / Crosstalk -95.3dB
Battery (old)
Endurance rating 52h
Platform 4 specs
GPU
Adreno 830
Adreno 418
CPU
Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
Hexa-core (4x1.4 GHz Cortex-A53 & 2x1.8 GHz Cortex-A57)
OS
Android 15, HyperOS 2
Android 5.1.1 (Lollipop), upgradable to 7.0 (Nougat), MIUI 10
Chipset
Snapdragon 8 Elite
Qualcomm MSM8992 Snapdragon 808 (20 nm)
Selfie Camera 3 specs
Features
HDR, panorama
Video
4K@30/60fps, 1080p@30/60fps, gyro-EIS
1080p@30fps
Single
32 MP
5 MP, f/2.0
Sound 3 specs
Loudspeaker
Yes, with stereo speakers
Yes
3.5mm jack
No
Yes
 
24-bit/192kHz Hi-Res & Hi-Res Wireless audio Qualcomm XPAN (24-bit/96kHz audio)

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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.