Screen size
Redmi K40 Gaming6.7"
Redmi Note 15 SpecialWinner: 6.8"+1.5%
Quick verdict
Redmi Note 15 Special leads the measured specs 9-7.
Measured wins
Redmi K40 Gaming
7
spec wins
Ties
7
equal specs
Redmi Note 15 Special
9
spec wins
Overall winner
Screen size
Technology
Redmi K40 Gaming
GSM / CDMA / HSPA / CDMA2000 / LTE / 5G
Redmi Note 15 Special
GSM / HSPA / LTE / 5G
2G bands
Redmi K40 Gaming
GSM 850 / 900 / 1800 / 1900 , CDMA 800
Redmi Note 15 Special
GSM 850 / 900 / 1800 / 1900
3G bands
Redmi K40 Gaming
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 , CDMA2000 1x
Redmi Note 15 Special
HSDPA 850 / 900 / 2100
4G bands
Redmi K40 Gaming
Resolution
Refresh rate
equal specsPeak brightness
Pixel density
CPU speed
RAM
equal specsStorage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
Stereo speakers
equal specs1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42
Redmi Note 15 Special
1, 3, 5, 8, 28, 40, 41
5G bands
Redmi K40 Gaming
1, 3, 28, 41, 77, 78 SA/NSA/Sub6
Redmi Note 15 Special
1, 3, 5, 8, 28, 40, 78 SA/NSA
Speed
Redmi K40 Gaming
HSPA, LTE, 5G
Redmi Note 15 Special
HSPA, LTE, 5G
Announced
Redmi K40 Gaming
2021, April 27
Redmi Note 15 Special
2026, April 02
Status
Redmi K40 Gaming
Available. Released 2021, April 30
Redmi Note 15 Special
Released Apr 7, 2026
Dimensions
Redmi K40 Gaming
161.9 x 76.9 x 8.3 mm (6.37 x 3.03 x 0.33 in)
Redmi Note 15 Special
164.0 x 75.4 x 7.4 mm or 7.8 mm
Weight
Redmi K40 Gaming
205 g (7.23 oz)
Redmi Note 15 Special
178 g or 182 g (6.28 oz)
Build
Redmi K40 Gaming
Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5)
Redmi Note 15 Special
-
SIM
Redmi K40 Gaming
Nano-SIM + Nano-SIM
Redmi Note 15 Special
Nano-SIM + Nano-SIM
Other
Redmi K40 Gaming
Physical pop-up gaming triggers IP53 dust protected and water resistant (vertical water sprays)
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
Redmi K40 Gaming
OLED, 1B colors, 120Hz, HDR10+, 500 nits (typ)
Redmi Note 15 Special
AMOLED, 68B colors, 120Hz, 3840Hz PWM, 800 nits (typ), 3200 nits (peak)
Size
Redmi K40 Gaming
6.67 inches, 107.4 cm2 (~86.3% screen-to-body ratio)
Redmi Note 15 Special
6.77 inches, 110.9 cm2 (~89.7% screen-to-body ratio)
Resolution
Redmi K40 Gaming
1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
Redmi Note 15 Special
1080 x 2392 pixels (~388 ppi density)
Protection
Redmi K40 Gaming
Corning Gorilla Glass 5
Redmi Note 15 Special
-
OS
Redmi K40 Gaming
Android 11, MIUI 12.5
Redmi Note 15 Special
Android 15, up to 4 major Android upgrades, HyperOS 2
Chipset
Redmi K40 Gaming
Mediatek Dimensity 1200 (6 nm)
Redmi Note 15 Special
Qualcomm SM6475-AB Snapdragon 6 Gen 3 (4 nm)
CPU
Redmi K40 Gaming
Octa-core (1x3.0 GHz Cortex-A78 & 3x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
Redmi Note 15 Special
Octa-core (4x2.4 GHz Cortex-A78 & 4x1.8 GHz Cortex-A55)
GPU
Redmi K40 Gaming
Mali-G77 MC9
Redmi Note 15 Special
Adreno 710
Card slot
Redmi K40 Gaming
No
Redmi Note 15 Special
microSDXC (uses shared SIM slot)
Internal
Redmi K40 Gaming
128GB 6GB RAM, 128GB 8GB RAM, 128GB 12GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
Redmi Note 15 Special
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
Other
Redmi K40 Gaming
UFS 3.1
Redmi Note 15 Special
UFS 2.2
Triple
Redmi K40 Gaming
64 MP, f/1.7, 26mm (wide), 1/2.0", 0.7µm, PDAF 8 MP, f/2.2, 120˚ (ultrawide) 2 MP (macro)
Redmi Note 15 Special
-
Features
Redmi K40 Gaming
Color spectrum sensor, Dual-LED flash, HDR, panorama
Redmi Note 15 Special
LED flash, HDR, panorama
Video
Redmi K40 Gaming
4K@30fps, 1080p@30/60/120fps, 720p@960fps, HDR
Redmi Note 15 Special
4K@30fps, 1080p@30fps, gyro-EIS
Dual
Redmi K40 Gaming
-
Redmi Note 15 Special
50 MP, f/1.8, (wide), 1/2.88", 0.61µm, PDAF Auxiliary lens
Single
Redmi K40 Gaming
16 MP, f/2.5, (wide), 1/3.06" 1.0µm
Redmi Note 15 Special
20 MP, f/2.2, (wide), 1/4"
Features
Redmi K40 Gaming
HDR
Redmi Note 15 Special
-
Video
Redmi K40 Gaming
1080p@30fps, 720p@120fps, HDR
Redmi Note 15 Special
1080p@30fps
Loudspeaker
Redmi K40 Gaming
Yes, with stereo speakers
Redmi Note 15 Special
Yes, with stereo speakers (with Dolby Atmos)
3.5mm jack
Redmi K40 Gaming
No
Redmi Note 15 Special
No
Other
Redmi K40 Gaming
24-bit/192kHz Hi-Res audio Tuned by JBL
Redmi Note 15 Special
24-bit/192kHz Hi-Res audio
WLAN
Redmi K40 Gaming
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
Redmi K40 Gaming
5.2, A2DP, LE
Redmi Note 15 Special
5.1, A2DP, LE
Positioning
Redmi K40 Gaming
GPS (L1+L5), GLONASS (G1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC
Redmi Note 15 Special
GPS, GALILEO, GLONASS, QZSS, BDS
NFC
Redmi K40 Gaming
Yes
Redmi Note 15 Special
No
Infrared port
Redmi K40 Gaming
Yes
Redmi Note 15 Special
Yes
Radio
Redmi K40 Gaming
No
Redmi Note 15 Special
No
USB
Redmi K40 Gaming
USB Type-C 2.0, OTG
Redmi Note 15 Special
USB Type-C 2.0, OTG
Sensors
Redmi K40 Gaming
Fingerprint (side-mounted), accelerometer, gyro, compass, barometer
Redmi Note 15 Special
Fingerprint (under display, optical), accelerometer, gyro, compass
Other
Redmi K40 Gaming
-
Redmi Note 15 Special
Virtual proximity sensing
Type
Redmi K40 Gaming
Li-Po 5065 mAh
Redmi Note 15 Special
Li-Ion 5800 mAh
Charging
Redmi K40 Gaming
67W wired, PD3.0, QC3, 100% in 42 min
Redmi Note 15 Special
45W wired 18W reverse wired
Colors
Redmi K40 Gaming
Black, Gray, Silver, Bruce Lee Yellow
Redmi Note 15 Special
Crimson Reserve red, Carbon Black, Frosted White
Models
Redmi K40 Gaming
M2012K10C, M2104K10AC
Redmi Note 15 Special
-
Price
Redmi K40 Gaming
About 260 EUR
Redmi Note 15 Special
About 190 EUR