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Honor 400
Honor Honor 400
2.7
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 Honor 400 Xiaomi 15 Ultra
Display size (in) 6.55 6.73
Charging (W) 66 90
Main camera (MP) 200.00 50.00
Selfie (MP) 50.00 32.00
Weight (g) 184 226
Thickness (mm) 7.30 9.35
Chipset Qualcomm SM7550-AB Snapdragon 7 Gen 3 (4 nm) Snapdragon 8 Elite
OS Android 15, up to 6 major Android upgrades, MagicOS 9 Android 15, HyperOS 2

Pros & Cons

Honor 400

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
Honor
Honor 400
Xiaomi
Xiaomi 15 Ultra
Battery 3 specs
Type
Market-dependent versions:· Si/C Li-Ion 5300 mAh - Europe· Si/C Li-Ion 6000 mAh - ROW
Market-dependent versions:· Si/C Li-Ion 5410 mAh - Global· Si/C Li-Ion 6000 mAh - China
Charging
66W wired (for 5300 mAh), 44% in 15 min, 100% in 46 min 80W wired (for 6000 mAh), 40% in 15 min 5W reverse wired
90W wired, 80W wireless
Capacity
5410 mAh
Body 5 specs
Dimensions
156.5 x 74.6 x 7.3 mm (6.16 x 2.94 x 0.29 in)
161.3 x 75.3 x 9.35 mm
Weight
184 g (6.49 oz)
226 g
Build
Glass front, plastic frame, plastic back
Glass front, glass-fiber reinforced plastic back or silicone polymer back (eco leather), aluminum frame
SIM
· Nano-SIM + Nano-SIM + eSIM (max 2 at a time)· Nano-SIM + eSIM
· Nano-SIM + Nano-SIM· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
 
IP65 dust tight and water resistant (low pressure water jets) IP66 dust tight and water resistant (high pressure water jets) * market/region dependent availability
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
Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct
Bluetooth
5.4, A2DP, LE, aptX HD
6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
Positioning
GPS, GALILEO, GLONASS, QZSS, BDS
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
NFC
Yes
Yes
Infrared port
Yes
Yes
Radio
No
No
USB
USB Type-C 2.0, OTG
USB Type-C 3.2 Gen 2, DisplayPort, OTG
5G
Yes
Display 4 specs
Type
AMOLED, 1B colors, 120Hz, 3840Hz PWM, HDR, 5000 nits (peak)
LTPO AMOLED
Size
6.55 inches, 105.4 cm2 (~90.3% screen-to-body ratio)
6.73 inches
Resolution
1264 x 2736 pixels, 19.5:9 ratio (~460 ppi density)
1440 x 3200 pixels
Protection
Mohs level 4
Xiaomi Shield Glass 2.0, Mohs level 6
Eu Label 4 specs
Energy
Class A
Class A
Battery
56:28h endurance, 1200 cycles
58:58h endurance, 1000 cycles
Free fall
Class B (180 falls)
Class C (90 falls)
Repairability
Class B
Class C
Features 2 specs
Sensors
Fingerprint (under display, optical), accelerometer, compass, proximity (ultrasonic)
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
 
Two-way satellite communication (China model only)
Launch 2 specs
Announced
2025, May 22
2025, February 27
Status
Available. Released 2025, May 23
Available. Released 2025, February 27
Main Camera 4 specs
Dual
200 MP, f/1.9, (wide), 1/1.4", 0.56µm, PDAF, OIS 12 MP, f/2.2, 112˚ (ultrawide), AF
Features
LED flash, HDR, panorama
Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)
Video
4K, 1080p, gyro-EIS, OIS
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
256GB 8GB RAM, 256GB 12GB RAM, 512GB 8GB RAM, 512GB 12GB RAM
256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
 
UFS 4.1
RAM
16GB
Storage
512GB
Misc 4 specs
Colors
Midnight Black, Meteor Silver, Desert Gold, Tidal Blue
Black, White, Silver Chrome, Green
Models
DNY-NX9
25010PN30G
Price
$ 334.90 / £ 349.00 / € 284.99
$ 693.75 / £ 1,295.00 / € 812.34
SAR EU
1.00 W/kg (head)     1.00 W/kg (body)    
Network 7 specs
Technology
GSM / HSPA / LTE / 5G
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
LTE
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
SA/NSA
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, 5G
 
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
Our Tests 4 specs
Performance
AnTuTu: 864286 (v10) GeekBench: 3198 (v6) 3DMark: 1492 (Wild Life Extreme)
Display
1550 nits max brightness (measured)
Loudspeaker
-25.8 LUFS (Very good)
-24.1 LUFS (Very good)
Battery
Active use score 12:29h
Active use score 16:13h
Platform 4 specs
OS
Android 15, up to 6 major Android upgrades, MagicOS 9
Android 15, HyperOS 2
Chipset
Qualcomm SM7550-AB Snapdragon 7 Gen 3 (4 nm)
Snapdragon 8 Elite
CPU
Octa-core (1x2.63 GHz Cortex-A715 & 3x2.4 GHz Cortex-A715 & 4x1.8 GHz Cortex-A510)
Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
GPU
Adreno 720
Adreno 830
Selfie Camera 3 specs
Single
50 MP, f/2.0, (wide), 0.64µm
32 MP
Features
HDR
HDR, panorama
Video
4K, 1080p, 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 & 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.