Compare Xiaomi Redmi Note 9 vs Redmi K40
Connectivity
Ports
USB-C, 3.5mm headphone
USB-C
Wireless Connectivity
NFC, IR, WiFi 5, Bluetooth 5.0
WiFi 6, Bluetooth 5.1
Construction
Battery | Capacity
5020 mAh (typ)
4520 mAh
Camera | Front
13MP, 1.12μm pixel size, 1/3.06" sensor size, f/2.25, 5P lens, 74°FOV
20MP
Camera | Rear | Depth
2MP, 1/5" sensor size, 1.7μm pixel size, 3P lens, f/2.4 FF
Camera | Rear | Macro
2MP, AF (2cm-10cm), 1.75μm pixel size, f/2.4 aperture
Camera | Rear | Telephoto
5MP
Camera | Rear | Ultra-Wide
8MP, FOV 118°, f/2.2, 1/4" sensor size, 1.2μm pixel size, 5P lens
8MP
Camera | Rear | Wide
48MP, 1/2" sensor size, 1.6μm 4-in-1 Super Pixel, 0.8μm pixel size, f/1.79, AF, 6P lens, FOV 79.4°
48MP, Sony IMX582, f/1.79
Colors
Polar White, Midnight Grey, Forest Green, Onyx Black
Glossy Black, Icy White, and Dreamland
Material
Corning Gorilla Glass 5
Corning Gorrila Glass 5
Speakers
Dual speakers
Dimensions
Size | Depth
8.9 mm
7.8 mm
Size | Height
162.3 mm
163.7 mm
Size | Width
77.2 mm
76.4 mm
Weight
199 g
196 g
Display
Aspect Ratio
19.5:9
20:9
Brightness
450 nits
900 nits (typ) / 1300 nits (max)
Contrast Ratio
1500:1
5,000,000:1 (typical)
Display Color Depth
10-bit
Display Diagonal
6.53 inch
6.67 inch
Display Type
Samsung E4 AMOLED (OLED)
Gamut
84% NTSC
100% DCI-P3
Refresh Rate
120 Hz
Resolution
FHD+ 2340×1080
FHD+ 2400x1080
Function
Audio
Dolby Atmos
Bluetooth Codecs
AAC / LDAC / LHDC
Chipset
MediaTek Helio G85
Qualcomm Snapdragon 870
Fast Charging
18W fast charge
55W wired turbo charging
GPS
GPS/ A-GPS / Galileo/ GLONASS / Beidou
GPS: L1+L5 / Galileo: E1+E5a / GLONASS: G1 / Beidou
Graphics
ARM G52 MC2
Qualcomm Adreno 650 GPU
HDR
HDR10+
Operating System
MIUI 11
MIUI 12, Android 11
Processor
2x A75 2.0GHz, 6x A55 1.8GHz, Octa-core CPU
Qualcomm Kryo585, 8-core
SIM
2x Nano 4G LTE
Dual nano 5G
Security
Side-mounted fingerprint sensor
Touch Screen
360Hz touch sampling rate
Video Recording
4K 30fps, FHD 960fps
Performance
Charging Time
52min to 100%
Memory | Capacity
3 - 4 GB
6, 8, or 12 GB
Memory | Type
LPDDR5 5500Mbps
Power Supply
33 W
Storage
64 - 128 GB
128 or 256 GB UFS 3.1
Production
Debut
2020-03-12
2021-02-25
Made In
China
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