Home Phone comparison Xiaomi 15 Ultra and Vivo iQOO 12 - Which is better?

Xiaomi 15 Ultra vs Vivo iQOO 12

95 out 100
Xiaomi 15 Ultra
VS
81 out 100
Vivo iQOO 12
Xiaomi 15 Ultra
Vivo iQOO 12

Compared 2 smartphones : Xiaomi 15 Ultra Manufactured in February, 2025, with display 6.73 with chipsetQualcomm Snapdragon 8 Elite, vs Vivo iQOO 12, Manufactured in November, 2023 with chipsetQualcomm Snapdragon 8 Gen 3. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Xiaomi 15 Ultra
  • Higher pixel density: 522ppi
  • Higher battery capacity: 5410mAh vs 5000mAh
  • Newer Bluetooth version: 6.0 vs 5.4
  • Supports newer USB: 3.2 vs 2
  • Supports DisplayPort
  • Supports Dolby Atmos
  • Built-in eSIM
Reasons to choose Vivo iQOO 12
  • Larger display: 6.78in
  • Higher refresh rate: 144Hz
  • Lighter design: 198.5g vs 226g

Versions

Available versions and configurations
Memory Options - 12/256 GB
- 16/512 GB
- 16/1024 GB		 - 12/256 GB
- 12/512 GB
- 16/512 GB
- 16/1024 GB

Review

Key Specs Xiaomi 15 Ultra and Vivo iQOO 12
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Xiaomi 15 Ultra
vs
Vivo iQOO 12

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.73 in 6.78 in
Resolution 1440x3200 pixels 1260x2800 pixels
Aspect ratio 20:9 20:9
Pixel density 522 ppi 453 ppi
Refresh rate 120 Hz 144 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes
Max brightness n/a 3000 nits
HDR support Yes Dolby Vision Yes HDR10+
Touch Sampling Rate 300 Hz n/a
Screen-to-body ratio 90 % 89.7 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Xiaomi 15 Ultra
1599 nits
Vivo iQOO 12
1414 nits
sRGB gamut99.7 %n/a
PWM (Flicker)120 Hzn/a
Response time1 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Xiaomi 15 Ultra]

Design & Build

Design and ergonomics comparison
Height 161.3 mm (6.35 in) 163.22 mm (6.43 in)
Width 75.3 mm (2.96 in) 75.8 mm (2.98 in)
Thickness 9.35 mm (0.37 in) 8.1 mm (0.32 in)
Weight 226 g (7.97 oz) 198.5 g (7 oz)
Water resistance IP68 IP64
Cooling system Vapor chamber Vapor chamber
Back panel Glass Glass
Frame Metal Metal
Colors - White
- Black
- Silver
- Green		 - White
- Black
- Red
Fingerprint sensor Yes In-Display Yes In-Display
Screen-to-body ratio
Xiaomi 15 Ultra
90 %
Vivo iQOO 12
89.7 %

Performance

Testing Xiaomi 15 Ultra and Vivo iQOO 12 In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Elite Qualcomm Snapdragon 8 Gen 3
Max Frequency 4320 MHz 3300 MHz
CPU Cores 8 (2 + 6) 8 (1 + 3 + 2 + 2)
Architecture - 6/3.53 (Oryon (Phoenix M))
- 2/4.32 (Oryon (Phoenix L))		 - 2/2.27 (Cortex-A520)
- 2/2.96 (Cortex-A720)
- 3/3.15 (Cortex-A720)
- 1/3.3 (Cortex-X4)
Process TSMC TSMC
Transistor Size 3 nm 4 nm
Neural Processor Hexagon Hexagon
Graphics Adreno 830 Adreno 750
GPU Cores 1536 1536
GPU Frequency 1100 MHz 903-1000 MHz
FLOPS 3379.2 GFLOPS 2774 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi 15 Ultra
3008
Vivo iQOO 12
2237
Geekbench 6 (Multi-Core)
Xiaomi 15 Ultra
9065
Vivo iQOO 12
6916
Geekbench 6 (Single-Core)30082237
Geekbench 6 (Multi-Core)90656916
Sources: Geekbench v6 [Xiaomi 15 Ultra], [Vivo iQOO 12]
AnTuTu 10
AnTuTu 10
Xiaomi 15 Ultra
2544373
Vivo iQOO 12
2087940
CPU558586462657
GPU1040161902878
Memory520300387756
UX425326334649
NanoReview Score25443732087940
3DMark Wild Life
3DMark Wild Life
Xiaomi 15 Ultra
n/a
Vivo iQOO 12
17059
Stabilityn/a76 %
Graphics Testn/a102 fps
Graphics Scoren/a17059
Sources: 3DMark [Vivo iQOO 12]
PCMark 3.0
PCMark 3.0
Xiaomi 15 Ultra
n/a
Vivo iQOO 12
14522
Writing scoren/a21145
Web scoren/a11036
Video editingn/a6543
Data manipulationn/a12430
NanoReview Scoren/a14522

Memory

RAM
RAM Size 12 GB - 12 GB
- 16 GB
Memory Type LPDDR5X LPDDR5X
Memory Frequency 5333 MHz n/a
Channels 2 4
Storage
Storage Capacity256 GB- 256 GB
- 512 GB
- 1024 GB
Storage TypeUFS 4.1UFS 4.0
Memory CardNoNo

Software

OS Android 15 Android 14 (Upgradeable to Android 15)
OS Size 23.9 GB n/a
UI Skin HyperOS 2.0 Funtouch 15

Battery

Volume 5410 mAh 5000 mAh
Max Charging Power 90 W 120 W
Battery Type Silicon Carbon (Si/C) Li-Po
Removable No No
Wireless Charging Yes (80 W) No
Reverse Charging Yes (Wireless) Yes
Fast Charging Yes (72% in 30 min) Yes (85% in 15 min)
Full Charge Time 0:51 h 0:20 h
Battery Life Test
Battery Life
Xiaomi 15 Ultra
30:03
Vivo iQOO 12
22:20
Web Browsing12:19 h08:42 h
Video Playback18:43 h15:33 h
Games06:45 h05:56 h
Standby Mode141 h98 h

Main camera

Matrix 50 MP 50 MP
Photo resolution 8192x6144 pixels 8192x6144 pixels
Zoom Optical, 4.3x Optical, 3x
Flash Dual LED Dual LED
Stabilization Optical Optical
8K Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
4K Recording Yes (Up to 120 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 1920 fps (1080p) 960 fps (1080p)
Wide-angle lens 115 ° 119 °
Lenses count Standard: 50 MP
Telephoto: 200 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Depth		 Standard: 50 MP
Telephoto: 64 MP
Ultra-wide: 50 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP50 MP
Aperturef/1.63f/1.7
Focal length23 mm23 mm
SensorSony LYT-900Omnivision OV50H
Sensor size1/1.01/1.3
Pixel size1.6 μm1.2 μm
AutofocusLaser autofocusPhase autofocus
StabilizationOpticalOptical
Telephoto
Matrix200 MP64 MP
Aperturef/2.6f/2.6
Focal length100 mm70 mm
SensorSamsung ISOCELL S5KHP9Omnivision OV64B
Sensor size1/1.41/2.0
Pixel size0.56 μm0.7 μm
StabilizationOpticalOptical
Ultra-wide lens
Matrix50 MP50 MP
Aperturef/2.2f/2.0
Focal length14 mm15 mm
SensorSamsung S5KJN5Samsung S5KJN1
Sensor size1/2.761/2.76
Pixel size0.64 μm0.64 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Xiaomi 15 Ultra
158
Vivo iQOO 12
n/a
Video quality
Xiaomi 15 Ultra
134
Vivo iQOO 12
n/a
Overall camera score
Xiaomi 15 Ultra
153
Vivo iQOO 12
n/a
Bokeh80n/a
Preview89n/a
Sources: DxOMark [Xiaomi 15 Ultra]

Front camera

Matrix 32 MP 16 MP
Photo resolution 6528x4896 pixels 4608x3456 pixels
Aperture f/2.0 f/2.5
Focal length 22 mm n/a
Sensor Omnivision OV32B Samsung S5K3P9
Sensor size 1/3.14 1/3.1
Pixel size 0.7 μm 1 μm
Autofocus No No
Stabilization Digital No
Video resolution 2160p (4K) at 60 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 6.0 5.4
Bluetooth features LE LE
USB type USB Type-C USB Type-C
USB version 3.2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort Yes n/a
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
- NAVIC		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Yes Yes
Infrared Port Yes Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G BandsGSM 2/3/5/8GSM 850/900/1800/1900MHz
3G BandsWCDMA 1/2/4/5/6/8/19WCDMA B1/B2/B4/B5/B8/B6/B19
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B17/B18/B19/B20/B26/B28/B34/B38/B39/B40/B41/B42/B48/B66)LTE (B1/B2/B3/B4/B5/B7/B8/B12/B17/B18/B19/B20/B26/B28/B66)
LTE categoryn/a20
5G SupportYesYes

Sound

Speakers n/a Stereo
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes n/a
Speaker Test
Max Volume
Xiaomi 15 Ultra
92.1 dB
Vivo iQOO 12
n/a

Other

Class Flagship Flagship
Announced February, 2025 yr November, 2023 yr
Release Date February, 2025 yr November, 2023 yr
Launch Price ($) n/a 625
MSRP ($) 1099 n/a
Sensors - Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes 90 W Yes 120 W

Note

Xiaomi 15 Ultra:

The Chinese version of the Xiaomi 15 Ultra has a 6000 mAh battery, while the international model comes with 5410 mAh, leading to a noticeable difference in battery life.

* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Xiaomi 15 Ultra the clear winner in this comparison.

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