Il Redmi K40 is a smartphone Android home redmi, independent brand but under the control of Xiaomi. It came out in early 2021 and is part of the mid-range category (for the price) even if we can call it a TRUE flagship Redmi: to justify this the AnTuTu score, the hardware equipment and the photographic sector . Thanks to the processor Snapdragon 870 and Adreno GPU 650, can excellently satisfy any function without danger of jamming. It is equipped with a touchscreen display 6.67 '' AMOLED (bright colors and deep blacks) with a resolution of 1080 2400 pixels x and camera integrated in the display (central hole). The photographic sector consists of a triple rear cam from 48 + 8 + 5 megapixel which allows you to take better pictures than those taken by other mid-ranges with and record excellent 4K 30fps video. At the network level, it is obviously equipped with a module LTE Dual 4G, Wi-Fi and Dual GPS. The available memory cuts are 6/8/12 GB RAM and 128/256 GB ROM (Chinese version).
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Technical Sheet
HUMAN
Dimensions: | 163.7 x 76.4 x 7.8 mm |
Weight: | 196 g |
Materials: | Glass and aluminum alloy |
Color: | Blue – White – Black |
DISPLAY
Technology: | AMOLED up to 120Hz |
Size: | 6.67 " |
Resolution: | Full HD + (2400 x 1080) |
Form factor: | 20:9 |
Pixel density: | 483 ppi |
Brightness: | 1300 maximum nits |
Protection: | Corning Gorilla Glass 5 |
2.5D processing | SI |
HARDWARE
Processor: | Qualcomm Snapdragon 870 |
Freq. clock and structure: | Octa-Core 64-bit (1 x Cortex A77 at 3,2 GHz + 3 x Cortex A77 at 2,40 GHz + 4 x Cortex A55 at 1,80 GHz) |
GPU: | Adreno 650 |
RAM: | 6 / 8 / 12 GB LPDDR5 |
Internal Mem.: | 128 / 256 GB UFS 3.1 |
Esp. Memory | SI |
Fingerprint reader | SI |
Pos. Fingerprint reader: | Integrated on the side |
Sensors: | Brightness, accelerometer, gyroscope, fingerprints, IR facial recognition, compass |
SOFTWARE
Operating system: | Android 11 |
MIUI user interface / version: | MIUI 12 |
BATTERY
Capacity: | 4520 mAh |
Type: | Li-Poly |
Charge speed support: | Quick Charge 4+ 33W |
VULNERABILITY ASSESSMENT
SIM 1: | Nano |
SIM 2: | Nano-Micro SD |
CDMA: | BC0 |
2G-rule: | B2 / B3 / B5 / B8 |
3G-rule: | B1/B2/B5/B8/B34/B39 |
4G LTE FDD: | B1/B3/B5/B7/B8/B20 |
4G LTE TDD: | B34/B38/B39/B40/B41/B20 |
Dual 4G support | SI |
5G-rule: | N1/N3/N41/N78/N79 |
CONNECTIVITY
Bluetooth: | 5.1 with A2DP and LE (Low Energy) |
Wifi: | 802.11 a, b, g, WiFi 6 |
USB: | Type-C 2.0 with OTG support |
GPS: | Dual GPS, A-GPS, Glonass, Beidou, Galileo |
NFC | SI |
FM radio | SI |
IR transmitter | SI |
Video output | SI |
CAMERA
No. Sensors: | Triple back room |
Triple back room | SI |
Primary sensor: | Sony IMX582 |
Resolution: | 48 megapixel |
Aperture / Pixel Size: | f 1.79 / 1.6 μm |
Autofocus: | Dual focus |
Stabilizer | SI |
ICE CREAM | SI |
AI technology | SI |
Flash: | Dual Flash LED |
Second Sensor: | Wide |
Resolution: | 8 megapixel |
Third Sensor: | Macro |
Resolution: | 5 megapixel |
Video: | Up to 4K 30 fps |
Time Lapse | SI |
Slow Motion | SI |
Front sensor: | Single |
Resolution: | 20 megapixel |
AUDIO
Speaker: | stereo |