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Xiaomi Redmi K40 Gaming
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Phone Insight
Full Specifications September 5, 2026
Xiaomi · 2021

Xiaomi Redmi K40 Gaming

Xiaomi Redmi K40 Gaming Android smartphone. Announced Apr 2021. Features 6.67″ display, Dimensity 1200 chipset, 5065 mAh battery, 256 GB storage, 12 GB RAM, Corning Gorilla Glass 5.

Display 6.67"
Chipset Dimensity 1200
RAM 6-12 GB
Storage 128GB/256GB storage, no card slot
Camera 64 MP
Battery 5065 mAh
Build 205g, 8.3mm thickness

Launch

Announced 2021, April 27
Status Available. Released 2021, April 30

Platform

OS Android 11, MIUI 12.5
Chipset Mediatek Dimensity 1200 (6 nm)
CPU Octa-core (1x3.0 GHz Cortex-A78 & 3x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
GPU Mali-G77 MC9

Display

Type OLED, 1B colors, 120Hz, HDR10+, 500 nits (typ)
Size 6.67 inches, 107.4 cm 2 (~86.3% screen-to-body ratio)
Resolution 1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
Protection Corning Gorilla Glass 5

Memory

Card slot No
Internal 128GB 6GB RAM, 128GB 8GB RAM, 128GB 12GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
memoryother UFS 3.1

Main Camera

Triple 64 MP, f/1.7, 26mm (wide), 1/2.0", 0.7µm, PDAF 8 MP, f/2.2, 120˚ (ultrawide) 2 MP (macro)
Features Color spectrum sensor, Dual-LED flash, HDR, panorama
Video 4K@30fps, 1080p@30/60/120fps, 720p@960fps, HDR

Selfie camera

Single 16 MP, f/2.5, (wide), 1/3.06" 1.0µm
Features HDR
Video 1080p@30fps, 720p@120fps, HDR

Body

Dimensions 161.9 x 76.9 x 8.3 mm (6.37 x 3.03 x 0.33 in)
Weight 205 g (7.23 oz)
Build Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5)
SIM Nano-SIM + Nano-SIM
bodyother Physical pop-up gaming triggers IP53 dust protected and water resistant (vertical water sprays)

Battery

Type Li-Po 5065 mAh
Charging 67W wired, PD3.0, QC3, 100% in 42 min

Sound

Loudspeaker Yes, with stereo speakers
3.5mm jack No
optionalother 24-bit/192kHz Hi-Res audio Tuned by JBL

Comms

WLAN Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Bluetooth 5.2, A2DP, LE
Positioning GPS (L1+L5), GLONASS (G1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC
NFC Yes
Infrared port Yes
Radio No
USB USB Type-C 2.0, OTG

Network

Technology GSM / CDMA / HSPA / CDMA2000 / LTE / 5G
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42
5G bands 1, 3, 28, 41, 77, 78 SA/NSA/Sub6
Speed HSPA, LTE, 5G

Features

Sensors Fingerprint (side-mounted), accelerometer, gyro, compass, barometer

Misc

Colors Black, Gray, Silver, Bruce Lee Yellow
Models M2012K10C, M2104K10AC
In depth

Full specifications

Announced 2021, April 27
Status Available. Released 2021, April 30
OS Android 11, MIUI 12.5
Chipset Mediatek Dimensity 1200 (6 nm)
CPU Octa-core (1x3.0 GHz Cortex-A78 & 3x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
GPU Mali-G77 MC9
Type OLED, 1B colors, 120Hz, HDR10+, 500 nits (typ)
Size 6.67 inches, 107.4 cm 2 (~86.3% screen-to-body ratio)
Resolution 1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
Protection Corning Gorilla Glass 5
Card slot No
Internal 128GB 6GB RAM, 128GB 8GB RAM, 128GB 12GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
memoryother UFS 3.1
Triple 64 MP, f/1.7, 26mm (wide), 1/2.0", 0.7µm, PDAF 8 MP, f/2.2, 120˚ (ultrawide) 2 MP (macro)
Features Color spectrum sensor, Dual-LED flash, HDR, panorama
Video 4K@30fps, 1080p@30/60/120fps, 720p@960fps, HDR
Single 16 MP, f/2.5, (wide), 1/3.06" 1.0µm
Features HDR
Video 1080p@30fps, 720p@120fps, HDR
Dimensions 161.9 x 76.9 x 8.3 mm (6.37 x 3.03 x 0.33 in)
Weight 205 g (7.23 oz)
Build Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5)
SIM Nano-SIM + Nano-SIM
bodyother Physical pop-up gaming triggers IP53 dust protected and water resistant (vertical water sprays)
Type Li-Po 5065 mAh
Charging 67W wired, PD3.0, QC3, 100% in 42 min
Loudspeaker Yes, with stereo speakers
3.5mm jack No
optionalother 24-bit/192kHz Hi-Res audio Tuned by JBL
WLAN Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Bluetooth 5.2, A2DP, LE
Positioning GPS (L1+L5), GLONASS (G1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC
NFC Yes
Infrared port Yes
Radio No
USB USB Type-C 2.0, OTG
Technology GSM / CDMA / HSPA / CDMA2000 / LTE / 5G
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42
5G bands 1, 3, 28, 41, 77, 78 SA/NSA/Sub6
Speed HSPA, LTE, 5G
Sensors Fingerprint (side-mounted), accelerometer, gyro, compass, barometer
Colors Black, Gray, Silver, Bruce Lee Yellow
Models M2012K10C, M2104K10AC
Price About 260 EUR
PhoneInsight Benchmark
69.8/100
Upper Mid-range

A specs-derived composite score, not a lab benchmark -- useful for ranking and comparison.

Processor 65.2
Display 80.7
Camera 75.6
Battery 85.1
1.5%Popularity rank
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