Screen size
Black Shark 4S6.7"
Redmi Note 15 SpecialWinner: 6.8"+1.5%
Quick verdict
Black Shark 4S and Redmi Note 15 Special are close on the measured specs.
Measured wins
Black Shark 4S
9
spec wins
Ties
5
equal specs
Redmi Note 15 Special
9
spec wins
Screen size
Technology
Black Shark 4S
GSM / CDMA / HSPA / EVDO / LTE / 5G
Redmi Note 15 Special
GSM / HSPA / LTE / 5G
2G bands
Black Shark 4S
GSM 850 / 900 / 1800 / 1900 , CDMA 800 & TD-SCDMA
Redmi Note 15 Special
GSM 850 / 900 / 1800 / 1900
3G bands
Black Shark 4S
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 , CDMA2000 1xEV-DO
Redmi Note 15 Special
HSDPA 850 / 900 / 2100
4G bands
Black Shark 4S
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
equal specsMain camera
Front camera
equal specsBattery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
3.5mm jack
SD card
Stereo speakers
equal specs1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41
Redmi Note 15 Special
1, 3, 5, 8, 28, 40, 41
5G bands
Black Shark 4S
1, 3, 8, 28, 41, 77, 78 SA/NSA
Redmi Note 15 Special
1, 3, 5, 8, 28, 40, 78 SA/NSA
Speed
Black Shark 4S
HSPA, LTE, 5G
Redmi Note 15 Special
HSPA, LTE, 5G
Announced
Black Shark 4S
2021, October 13
Redmi Note 15 Special
2026, April 02
Status
Black Shark 4S
Available. Released 2021, October 16
Redmi Note 15 Special
Released Apr 7, 2026
Dimensions
Black Shark 4S
163.7 x 76.2 x 9.9 mm (6.44 x 3.00 x 0.39 in)
Redmi Note 15 Special
164.0 x 75.4 x 7.4 mm or 7.8 mm
Weight
Black Shark 4S
210 g (7.41 oz)
Redmi Note 15 Special
178 g or 182 g (6.28 oz)
SIM
Black Shark 4S
Nano-SIM + Nano-SIM
Redmi Note 15 Special
Nano-SIM + Nano-SIM
Other
Black Shark 4S
Physical pop-up gaming triggers
Redmi Note 15 Special
Drop resistant up to 1.7m MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions IP66 dust tight and water resistant (high pressure water jets)
Type
Black Shark 4S
Super AMOLED, 144Hz, HDR10+, 1300 nits (peak)
Redmi Note 15 Special
AMOLED, 68B colors, 120Hz, 3840Hz PWM, 800 nits (typ), 3200 nits (peak)
Size
Black Shark 4S
6.67 inches, 107.4 cm2 (~86.1% screen-to-body ratio)
Redmi Note 15 Special
6.77 inches, 110.9 cm2 (~89.7% screen-to-body ratio)
Resolution
Black Shark 4S
1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
Redmi Note 15 Special
1080 x 2392 pixels (~388 ppi density)
OS
Black Shark 4S
Android 11, Joy UI 12.8
Redmi Note 15 Special
Android 15, up to 4 major Android upgrades, HyperOS 2
Chipset
Black Shark 4S
Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)
Redmi Note 15 Special
Qualcomm SM6475-AB Snapdragon 6 Gen 3 (4 nm)
CPU
Black Shark 4S
Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
Redmi Note 15 Special
Octa-core (4x2.4 GHz Cortex-A78 & 4x1.8 GHz Cortex-A55)
GPU
Black Shark 4S
Adreno 650
Redmi Note 15 Special
Adreno 710
Card slot
Black Shark 4S
No
Redmi Note 15 Special
microSDXC (uses shared SIM slot)
Internal
Black Shark 4S
128GB 8GB RAM, 128GB 12GB RAM, 256GB 12GB RAM
Redmi Note 15 Special
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
Other
Black Shark 4S
UFS 3.1
Redmi Note 15 Special
UFS 2.2
Triple
Black Shark 4S
48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 120˚ (ultrawide), 1/4.0", 1.12µm 5 MP (macro), AF
Redmi Note 15 Special
-
Features
Black Shark 4S
LED flash, HDR, panorama
Redmi Note 15 Special
LED flash, HDR, panorama
Video
Black Shark 4S
4K@30/60fps, 1080p@30/60/240fps, 1080p@960fps
Redmi Note 15 Special
4K@30fps, 1080p@30fps, gyro-EIS
Dual
Black Shark 4S
-
Redmi Note 15 Special
50 MP, f/1.8, (wide), 1/2.88", 0.61µm, PDAF Auxiliary lens
Single
Black Shark 4S
20 MP, f/2.0, (wide), 0.8µm
Redmi Note 15 Special
20 MP, f/2.2, (wide), 1/4"
Features
Black Shark 4S
HDR
Redmi Note 15 Special
-
Video
Black Shark 4S
1080p@30fps
Redmi Note 15 Special
1080p@30fps
Loudspeaker
Black Shark 4S
Yes, with stereo speakers
Redmi Note 15 Special
Yes, with stereo speakers (with Dolby Atmos)
3.5mm jack
Black Shark 4S
Yes
Redmi Note 15 Special
No
Other
Black Shark 4S
24-bit/192kHz Hi-Res audio
Redmi Note 15 Special
24-bit/192kHz Hi-Res audio
WLAN
Black Shark 4S
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Redmi Note 15 Special
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
Black Shark 4S
5.2, A2DP, LE, aptX HD, aptX Adaptive
Redmi Note 15 Special
5.1, A2DP, LE
Positioning
Black Shark 4S
GPS, GLONASS, GALILEO, QZSS, BDS
Redmi Note 15 Special
GPS, GALILEO, GLONASS, QZSS, BDS
NFC
Black Shark 4S
Yes
Redmi Note 15 Special
No
Radio
Black Shark 4S
No
Redmi Note 15 Special
No
USB
Black Shark 4S
USB Type-C 2.0
Redmi Note 15 Special
USB Type-C 2.0, OTG
Infrared port
Black Shark 4S
-
Redmi Note 15 Special
Yes
Sensors
Black Shark 4S
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer
Redmi Note 15 Special
Fingerprint (under display, optical), accelerometer, gyro, compass
Other
Black Shark 4S
-
Redmi Note 15 Special
Virtual proximity sensing
Type
Black Shark 4S
Li-Po 4500 mAh
Redmi Note 15 Special
Li-Ion 5800 mAh
Charging
Black Shark 4S
120W wired, 100% in 17 min
Redmi Note 15 Special
45W wired 18W reverse wired
Colors
Black Shark 4S
Black, White
Redmi Note 15 Special
Crimson Reserve red, Carbon Black, Frosted White
Price
Black Shark 4S
About 360 EUR
Redmi Note 15 Special
About 190 EUR