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vivo Y300i
Vivo vivo Y300i
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 vivo Y300i Xiaomi 15 Ultra
Display size (in) 6.68 6.73
Charging (W) 44 90
Selfie (MP) 5.00 32.00
Weight (g) 205 226
Thickness (mm) 8.10 9.35
Chipset Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm) Snapdragon 8 Elite
OS Android 15, OriginOS 5 Android 15, HyperOS 2

Pros & Cons

vivo Y300i

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
Vivo
vivo Y300i
Xiaomi
Xiaomi 15 Ultra
Battery 3 specs
Type
Si/C Li-Ion 6500 mAh
Market-dependent versions:· Si/C Li-Ion 5410 mAh - Global· Si/C Li-Ion 6000 mAh - China
Charging
44W wired Reverse wired
90W wired, 80W wireless
Capacity
5410 mAh
Body 5 specs
Dimensions
165.7 x 76.3 x 8.1 mm (6.52 x 3.00 x 0.32 in)
161.3 x 75.3 x 9.35 mm
Weight
205 g (7.23 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
· Nano-SIM + Nano-SIM· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
 
IP64 dust tight and water resistant (water splashes)
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, dual-band
Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct
Bluetooth
4.2, A2DP, aptX Adaptive
6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
Positioning
GPS, GALILEO, GLONASS, BDS, QZSS
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
IPS LCD, 120Hz
LTPO AMOLED
Size
6.68 inches, 107.4 cm2 (~84.9% screen-to-body ratio)
6.73 inches
Resolution
720 x 1608 pixels, 20:9 ratio (~264 ppi density)
1440 x 3200 pixels
Protection
Xiaomi Shield Glass 2.0, Mohs level 6
Features 2 specs
Sensors
Fingerprint (side-mounted), accelerometer, proximity, compass
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
 
Two-way satellite communication (China model only)
Launch 2 specs
Announced
2025, March 10
2025, February 27
Status
Available. Released 2025, March 14
Available. Released 2025, February 27
Main Camera 4 specs
Single
50 MP, f/1.8, (wide), PDAF
Features
LED flash, HDR, panorama
Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)
Video
1080p@30fps
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
128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM
256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
 
UFS 2.2
UFS 4.1
RAM
16GB
Storage
512GB
Misc 4 specs
Colors
Black, Blue, Titanium
Black, White, Silver Chrome, Green
Models
V2444A
25010PN30G
Price
About 190 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 / CDMA / HSPA / LTE / 5G
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900
GSM 850 / 900 / 1800 / 1900
 
CDMA 800
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
3G bands
HSDPA 850 / 900 / 2100
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 3, 5, 8, 28, 34, 38, 39, 40, 41
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, 8, 28, 38, 40, 41, 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
Platform 4 specs
OS
Android 15, OriginOS 5
Android 15, HyperOS 2
Chipset
Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm)
Snapdragon 8 Elite
CPU
Octa-core (2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55)
Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
GPU
Adreno 613
Adreno 830
Selfie Camera 3 specs
Single
5 MP, f/2.0, (wide)
32 MP
Video
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 & 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.