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redmi-k40
mi-max-4
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Xiaomi Mi Max 4
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Display
Type
IPS_LCD
SUPER_AMOLED
Size
7.2"
6.67"
Resolution
FHD+
FHD+
Refresh Rate
—
120Hz
Brightness
—
1300 nits
Protection
Corning Gorilla Glass 5
Corning Gorilla Glass 5
Platform
OS
ANDROID Android 9.0 (Pie), MIUI 11
ANDROID Android 11, MIUI 12
Chipset
Qualcomm SDM660 Snapdragon 660
Qualcomm SM8250-AC Snapdragon 870 5G
CPU
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
GPU
Adreno 512
Adreno 650
AnTuTu Score
—
—
Memory
RAM
4GB / 6GB
6GB / 8GB / 12GB
Storage
64GB / 128GB
128GB / 256GB
Storage Type
eMMC 5.1
UFS 3.1
Card Slot
Yes
No
Camera
Main Camera
48MP f/1.8
48MP f/1.8
Selfie Camera
8MP f/2.0
20MP f/2.5
Video (Max)
4K@30fps, 720p/1080p@30fps (gyro-EIS)
4K@30fps, 1080p@30/60/120/240/960fps, gyro-EIS
OIS
No
No
Battery
Capacity
5,800 mAh
4,520 mAh
Wired Charging
18W
33W
Wireless Charging
—
—
Fast Charging
—
PD3.0
Connectivity
Wi-Fi
Wi-Fi 5, Wi-Fi 4, Dual-band
Wi-Fi 6, Wi-Fi 5, Wi-Fi 4, Dual-band
Bluetooth
5.0
5.1
NFC
No
Yes
5G
No
Yes
USB
USB Type-C
USB Type-C 2.0
GPS
GPS, GLONASS, BeiDou
GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC
Body
Dimensions
-
163.7 x 76.4 x 7.8 mm (6.44 x 3.01 x 0.31 in)
Weight
—
196g
Build
Glass (Gorilla Glass 5) / aluminum back / aluminum frame
—
Water Resist
—
—
Colors
Black, Champagne Gold, Blue
Black, White, Aurora