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Infinix Note 50x
Infinix Infinix Note 50x
2.6
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 Infinix Note 50x Xiaomi 15 Ultra
Display size (in) 6.67 6.73
Charging (W) 45 90
Selfie (MP) 8.00 32.00
Weight (g) 195 226
Thickness (mm) 8.00 9.35
Chipset Mediatek Dimensity 7300 Ultimate (4 nm) Snapdragon 8 Elite
OS Android 15, up to 2 major Android upgrades, XOS 15 Android 15, HyperOS 2

Pros & Cons

Infinix Note 50x

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
Infinix
Infinix Note 50x
Xiaomi
Xiaomi 15 Ultra
Battery 3 specs
Type
5500 mAh
Market-dependent versions:· Si/C Li-Ion 5410 mAh - Global· Si/C Li-Ion 6000 mAh - China
Charging
45W wired 10W reverse wired Bypass Charging
90W wired, 80W wireless
Capacity
5410 mAh
Body 5 specs
Dimensions
165.4 x 76.4 x 8.0 mm or 8.2 mm
161.3 x 75.3 x 9.35 mm
Weight
195.4 g or 198.9 g (6.88 oz)
226 g
SIM
Nano-SIM + Nano-SIM
· Nano-SIM + Nano-SIM· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
 
IP64 dust tight and water resistant (water splashes) RGB notification light (on the back) MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Aerospace-grade glass fiber
Build
Glass front, glass-fiber reinforced plastic back or silicone polymer back (eco leather), aluminum frame
Connectivity 8 specs
WLAN
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band
Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct
Bluetooth
5.4, A2DP, LE
6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
Positioning
GPS
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
NFC
No
Yes
Infrared port
Yes
Yes
Radio
FM radio
No
USB
USB Type-C 2.0, OTG
USB Type-C 3.2 Gen 2, DisplayPort, OTG
5G
Yes
Display 4 specs
Type
IPS LCD, 120Hz, 560 nits (typ)
LTPO AMOLED
Size
6.67 inches, 107.4 cm2 (~85.0% screen-to-body ratio)
6.73 inches
Resolution
720 x 1600 pixels, 20:9 ratio (~263 ppi density)
1440 x 3200 pixels
Protection
Xiaomi Shield Glass 2.0, Mohs level 6
Features 2 specs
Sensors
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
 
Two-way satellite communication (China model only)
Launch 2 specs
Announced
2025, March 27
2025, February 27
Status
Available. Released 2025, April
Available. Released 2025, February 27
Main Camera 4 specs
Single
50 MP, f/1.6, (wide), PDAF
Features
Dual-LED flash, HDR, panorama
Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)
Video
4K@30fps, 1080p@30/120/240fps
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
microSDXC (uses shared SIM slot)
No
Internal
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
 
UFS 2.2
UFS 4.1
RAM
16GB
Storage
512GB
Misc 4 specs
Colors
Titanium Gray, Enchanted Purple, Sea Breeze Green, Sunset Spice Pink
Black, White, Silver Chrome, Green
Models
X6857B
25010PN30G
Price
About 130 EUR
$ 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 850 / 900 / 1700(AWS) / 1900 / 2100
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40, 41, 42, 66
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
1, 3, 5, 7, 8, 12, 20, 28, 38, 40, 41, 66, 71, 77, 78 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
Platform 4 specs
OS
Android 15, up to 2 major Android upgrades, XOS 15
Android 15, HyperOS 2
Chipset
Mediatek Dimensity 7300 Ultimate (4 nm)
Snapdragon 8 Elite
CPU
Octa-core (4x2.5 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
GPU
Mali-G615 MC2
Adreno 830
Selfie Camera 3 specs
Single
8 MP, f/2.0, (wide)
32 MP
Video
1440p@30fps, 1080p@30fps
4K@30/60fps, 1080p@30/60fps, gyro-EIS
Features
HDR, panorama
Sound 3 specs
Loudspeaker
Yes, with stereo speakers
Yes, with stereo speakers
3.5mm jack
No
No
 
24-bit/192kHz Hi-Res audio
24-bit/192kHz Hi-Res & Hi-Res Wireless audio Qualcomm XPAN (24-bit/96kHz audio)
Eu Label 4 specs
Energy
Class A
Battery
58:58h endurance, 1000 cycles
Free fall
Class C (90 falls)
Repairability
Class C
Our Tests 2 specs
Loudspeaker
-24.1 LUFS (Very good)
Battery
Active use score 16:13h

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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.