Home Phone comparison Xiaomi Black Shark 4 and Xiaomi Redmi 15 4G - Which is better?

Xiaomi Black Shark 4 vs Xiaomi Redmi 15 4G

58 out 100
Xiaomi Black Shark 4
VS
60 out 100
Xiaomi Redmi 15 4G
Xiaomi Black Shark 4
Xiaomi Redmi 15 4G

Compared 2 smartphones : Xiaomi Black Shark 4 Manufactured in March, 2021, with display 6.67 with chipsetQualcomm Snapdragon 870 5G, vs Xiaomi Redmi 15 4G, Manufactured in August, 2025with chipsetQualcomm Snapdragon 685. 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 Black Shark 4
  • Higher pixel density: 395ppi
  • Lighter design: 210g vs 224g
  • Newer Bluetooth version: 5.2 vs 5
  • Supports Dolby Atmos
Reasons to choose Xiaomi Redmi 15 4G
  • Larger display: 6.9in
  • Higher battery capacity: 7000mAh vs 4500mAh
  • Infrared port
  • Includes charger

Versions

Available versions and configurations
Memory Options - 6/128 GB
- 8/128 GB
- 8/256 GB
- 12/128 GB
- 12/256 GB		 - 6/128 GB
- 8/256 GB

Review

Key Specs Xiaomi Black Shark 4 and Xiaomi Redmi 15 4G
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.
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Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Xiaomi Black Shark 4
vs
Xiaomi Redmi 15 4G

Display

Display quality comparison
Type Super AMOLED IPS LCD
Size 6.67 in 6.9 in
Resolution 1080x2400 pixels 1080x2340 pixels
Aspect ratio 20:9 19.5:9
Pixel density 395 ppi 374 ppi
Refresh rate 144 Hz 144 Hz
Adaptive refresh rate No Yes
Max brightness 500 nits n/a
HDR support Yes HDR10+ No
Touch Sampling Rate 720 Hz n/a
Screen-to-body ratio 85.8 % 83.1 %
Features - DCI-P3
- Always-On Display
- DC dimming		 n/a
Display test
Peak brightness (auto)
Xiaomi Black Shark 4
688 nits
Xiaomi Redmi 15 4G
n/a
sRGB gamut100 %n/a
PWM (Flicker)162 Hzn/a
Response time8.5 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Xiaomi Black Shark 4]

Design & Build

Design and ergonomics comparison
Height 163.8 mm (6.45 in) 171.1 mm (6.74 in)
Width 76.4 mm (3.01 in) 82.1 mm (3.23 in)
Thickness 9.9 mm (0.39 in) 8.6 mm (0.34 in)
Weight 210 g (7.41 oz) 224 g (7.9 oz)
Water resistance No IP64
Back panel Glass Plastic
Frame Metal Plastic
Colors - Black
- Silver
- Blue		 - Black
- Gray
- Purple
Fingerprint sensor Yes In-Button Yes, In-Button
Screen-to-body ratio
Xiaomi Black Shark 4
85.8 %
Xiaomi Redmi 15 4G
83.1 %

Performance

Testing Xiaomi Black Shark 4 and Xiaomi Redmi 15 4G In benchmarks
Processor
Chipset Qualcomm Snapdragon 870 5G Qualcomm Snapdragon 685
Max Frequency 3200 MHz 2800 MHz
CPU Cores 8 (1 + 3 + 4) 8 (4 + 4)
Architecture - 4/1.8 (Kryo 585 Silver (Cortex-A55))
- 3/2.42 (Kryo 585 Gold (Cortex-A77))
- 1/3.2 (Kryo 585 Prime (Cortex-A77))		 - 4/1.9 (Cortex-A53)
- 4/2.8 (Cortex-A73)
Process TSMC TSMC
Transistor Size 7 nm 6 nm
Neural Processor Hexagon 698 Hexagon 686
Graphics Adreno 650 Adreno 610
GPU Cores 768 128
GPU Frequency 670 MHz 1260 MHz
FLOPS 1029.1 GFLOPS 322.6 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi Black Shark 4
1374
Xiaomi Redmi 15 4G
475
Geekbench 6 (Multi-Core)
Xiaomi Black Shark 4
3731
Xiaomi Redmi 15 4G
1514
Geekbench 6 (Single-Core)1374475
Geekbench 6 (Multi-Core)37311514
AnTuTu 10
AnTuTu 10
Xiaomi Black Shark 4
785107
Xiaomi Redmi 15 4G
380990
CPU218905114885
GPU21377457988
Memory148795103236
UX203633104881
NanoReview Score785107380990
3DMark Wild Life
3DMark Wild Life
Xiaomi Black Shark 4
4294
Xiaomi Redmi 15 4G
n/a
Max Surface Temp.45.4 °Cn/a
Stability99 %n/a
Graphics Test25 fpsn/a
Graphics Score4294n/a
Sources: 3DMark [Xiaomi Black Shark 4]
PCMark 3.0
PCMark 3.0
Xiaomi Black Shark 4
14766
Xiaomi Redmi 15 4G
n/a
Writing score18061n/a
Web score13097n/a
Video editing7303n/a
Data manipulation10523n/a
NanoReview Score14766n/a

Memory

RAM
RAM Size - 6 GB
- 8 GB
- 12 GB		 6 GB
Memory Type LPDDR5 LPDDR4X
Memory Frequency 2750 MHz 2133 MHz
Channels 4 2
Storage
Storage Capacity- 128 GB
- 256 GB		128 GB
Storage TypeUFS 3.1UFS 2.2
Memory CardNoMicroSD

Software

OS Android 11 Android 15
OS Size 18 GB n/a
UI Skin Joy UI 12.5 HyperOS 2.0

Battery

Volume 4500 mAh 7000 mAh
Max Charging Power 120 W 33 W
Battery Type Li-Po n/a
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging Yes (100% in 19 min) Yes
Full Charge Time 0:19 h n/a
Battery Life Test
Battery Life
Xiaomi Black Shark 4
18:09
Xiaomi Redmi 15 4G
n/a
Web Browsing07:34 hn/a
Video Playback11:34 hn/a
Games05:04 hn/a
Standby Mode81 hn/a

Main camera

Matrix 48 MP 50 MP
Photo resolution 8000x6000 pixels n/a
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording Yes (Up to 60 fps) No
1080p Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
Slow Motion 960 fps (1080p) n/a
Wide-angle lens 120 ° n/a
Lenses count Standard: 48 MP
Ultra-wide: 8 MP
Macro: 5 MP		 Standard: 50 MP
Depth
Features - Bokeh effect
- Pro mode		 Bokeh effect
Main lens
Matrix48 MP50 MP
Aperturef/1.8f/1.8
SensorSony IMX582 Exmor RSn/a
Sensor size1/2.0n/a
Pixel size0.8 μmn/a
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital
Ultra-wide lens
Matrix8 MPn/a
Aperturef/2.2n/a
SensorSony IMX355n/a
Sensor size1/4.0n/a
Pixel size1.12 μmn/a
StabilizationDigitaln/a

Front camera

Matrix 20 MP 8 MP
Aperture f/2.0 f/2.0
Focal length 26 mm n/a
Sensor CMOS n/a
Pixel size 0.8 μm n/a
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 6 (802.11 a/b/g/n/ac/ax) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.2 5
Bluetooth features LE, HID, A2DP LE
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo
- NAVIC		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
2G BandsGSM B2/3/5/8n/a
3G BandsWCDMA B1/2/4/5/6/8/9/19n/a
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B18/B19/B20/B26/B28)n/a
LTE category20n/a
5G SupportYesNo

Sound

Speakers Stereo n/a
3.5 mm Jack Yes Yes
FM Radio No No
Dolby Atmos Yes n/a
Speaker Test
Max Volume
Xiaomi Black Shark 4
82 dB
Xiaomi Redmi 15 4G
n/a

Other

Class Flagship Budget
Announced March, 2021 yr August, 2025 yr
Release Date March, 2021 yr August, 2025 yr
Launch Price ($) 500 n/a
MSRP ($) n/a 150
Sensors - Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included n/a Yes, 33 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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