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Compare features, prices and ratings to find the perfect phone for you.
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 S9 | Xiaomi 15 Ultra |
|---|---|---|
| Display size (in) | 6.44 | 6.73 |
| Charging (W) | 33 | 90 |
| Main camera (MP) | 64.00 | 50.00 |
| Selfie (MP) | 44.00 | 32.00 |
| Weight (g) | 173 | 226 |
| Thickness (mm) | 7.40 | 9.35 |
| Chipset | Mediatek Dimensity 1100 (6 nm) | Snapdragon 8 Elite |
| OS | Android 11, OriginOS 1.0 | Android 15, HyperOS 2 |
Pros & Cons
vivo S9
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 S9
Xiaomi
Xiaomi 15 Ultra
Battery 3 specs
Type
4000 mAh
Market-dependent versions:· Si/C Li-Ion 5410 mAh - Global· Si/C Li-Ion 6000 mAh - China
Charging
33W wired, 66% in 30 min
90W wired, 80W wireless
Capacity
—
5410 mAh
Body 5 specs
Dimensions
158.4 x 73.9 x 7.4 mm (6.24 x 2.91 x 0.29 in)
161.3 x 75.3 x 9.35 mm
Weight
173 g (6.10 oz)
226 g
SIM
Nano-SIM + Nano-SIM
· Nano-SIM + Nano-SIM· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
Build
—
Glass front, glass-fiber reinforced plastic back or silicone polymer back (eco leather), aluminum frame
—
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 Direct
Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct
Bluetooth
5.2, A2DP, LE, aptX HD
6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
Positioning
GPS, GLONASS, GALILEO, BDS
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
NFC
Yes
Yes
Radio
No
No
USB
USB Type-C, OTG
USB Type-C 3.2 Gen 2, DisplayPort, OTG
Infrared port
—
Yes
5G
—
Yes
Display 4 specs
Type
AMOLED, 90Hz, HDR10+
LTPO AMOLED
Size
6.44 inches, 100.1 cm2 (~85.5% screen-to-body ratio)
6.73 inches
Resolution
1080 x 2400 pixels, 20:9 ratio (~409 ppi density)
1440 x 3200 pixels
Protection
—
Xiaomi Shield Glass 2.0, Mohs level 6
Features 2 specs
Sensors
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
—
Two-way satellite communication (China model only)
Launch 2 specs
Announced
2021, March 03
2025, February 27
Status
Available. Released 2021, March 12
Available. Released 2025, February 27
Main Camera 4 specs
Triple
64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF, OIS
8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm
Auxiliary lens
—
Features
Dual-LED dual-tone flash, HDR, panorama
Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)
Video
4K@30fps, 1080p@30fps, gyro-EIS
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
256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
UFS 3.1
UFS 4.1
RAM
—
16GB
Storage
—
512GB
Misc 4 specs
Colors
Black, White, Gradient Blue
Black, White, Silver Chrome, Green
Models
V2072A
25010PN30G
Price
About 390 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 / CDMA2000 / LTE / 5G
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900
GSM 850 / 900 / 1800 / 1900
CDMA2000 1x
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 / 1700(AWS) / 1900 / 2100
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 3, 4, 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, 28, 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 11, OriginOS 1.0
Android 15, HyperOS 2
Chipset
Mediatek Dimensity 1100 (6 nm)
Snapdragon 8 Elite
CPU
Octa-core (4x2.6 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-G77 MC9
Adreno 830
Selfie Camera 4 specs
Dual
44 MP, f/2.0, (wide), AF
8 MP, f/2.3, 105˚ (ultrawide)
—
Features
HDR
HDR, panorama
Video
4K@30fps, 1080p@30fps
4K@30/60fps, 1080p@30/60fps, gyro-EIS
Single
—
32 MP
Sound 3 specs
Loudspeaker
Yes
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
Similar Comparisons
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.