The Redmi K40 is a line of Android-based

smartphone A smartphone is a mobile phone with advanced computing capabilities. It typically has a touchscreen interface, allowing users to access a wide range of applications and services, such as web browsing, email, and social media, as well as multi ...

s manufactured by

Xiaomi Xiaomi (; ) is a Chinese multinational corporation and technology company headquartered in Beijing, China. It is best known for consumer electronics software electric vehicles. It is the second-largest manufacturer of smartphones in the worl ...

and marketed under its

Redmi Redmi (stylized in all caps) is a subsidiary brand owned by the Chinese electronics company Xiaomi. It was first launched in July 2013 as a budget smartphone line, and became a separate sub-brand of Xiaomi in 2019, to takeover entry-level and ...

sub-brand. There are several models, the K40, K40 Pro, K40 Pro+, K40 Gaming and K40S. In the global market the Redmi K40 was launched as Poco F3 and the Redmi K40 Pro+ was launched as Xiaomi Mi 11i. In April 2021 the Redmi K40 and K40 Pro+ were released in India as Xiaomi Mi 11X and Mi 11X Pro. In July 2021 the Redmi K40 Gaming was released globally as Poco F3 GT. The Redmi K40S was released globally as Poco F4 but with improved specs.

Design

The front and back panels are made of

Gorilla Glass Gorilla Glass is a brand of chemically strengthened glass developed and manufactured by Corning Inc. Currently in its ninth generation, it is designed to be thin, light, and damage-resistant. Its surface strength and crack-resistance are achieve ...

5, except in the Redmi K40S and Poco F4 where the back panel is made of

plastic Plastics are a wide range of synthetic polymers, synthetic or Semisynthesis, semisynthetic materials composed primarily of Polymer, polymers. Their defining characteristic, Plasticity (physics), plasticity, allows them to be Injection moulding ...

. The frame is made of aluminium and covered by

polycarbonate Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate ester, carbonate groups in their chemical structures. Polycarbonates used in engineering are strong, toughness, tough materials, and some grades are optically transp ...

. The design of the Redmi K40, K40 Pro and K40 Pro+ is similar to the Mi 11. The design of the Redmi K40S is similar to the Redmi K50 and K50 Pro but with flat edges. On the bottom side are a

USB-C USB-C, or USB Type-C, is a 24-pin reversible Electrical connector, connector (not a Communication protocol, protocol) that supersedes previous USB hardware#Connectors, USB connectors (also supersedes Mini DisplayPort and Lightning (connector) ...

port, speaker, microphone and

dual SIM Some mobile phones support use of two SIM cards, described as dual SIM operation. When a second SIM card is installed, the phone may allow users to switch between two separate mobile network services manually, have hardware support for keeping bo ...

tray. On the top side there are two additional microphones, IR blaster and second speaker. On the right side there are a volume rocker and a power button with an integrated fingerprint scanner. The Redmi K40 Pro smartphone is fueled by a Non-removable Li-Po 4520 mAh battery. It comes with Fast charging 33W, 100% in 52 min (advertised), Power Delivery 3.0, and Quick Charge 3+.

Colours

* The Redmi K40 is available in 3 colours: Bright

Black Black is a color that results from the absence or complete absorption of visible light. It is an achromatic color, without chroma, like white and grey. It is often used symbolically or figuratively to represent darkness.Eva Heller, ''P ...

, Dreamland (

silver Silver is a chemical element; it has Symbol (chemistry), symbol Ag () and atomic number 47. A soft, whitish-gray, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. ...

) and Sunny Snow (

white White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ...

). * The Redmi K40 Pro and K40 Pro+ are available in 3 colors: Ink Feather (black feather pattern), Dreamland (silver) and Sunny Snow (white). * The Poco F3 is available in 3 colours: Night Black, Arctic White and Deep Ocean

Blue Blue is one of the three primary colours in the RYB color model, RYB colour model (traditional colour theory), as well as in the RGB color model, RGB (additive) colour model. It lies between Violet (color), violet and cyan on the optical spe ...

. Also later was added Moonlight Silver variant which has the same design as Deep Ocean Blue but in silver colour. * Xiaomi Mi 11 is available in 3 colours: Cosmic Black, Celestial Silver and Frosty White. * Xiaomi Mi 11X and Mi 11X Pro are available in 3 colours: Cosmic Black, Celestial Silver and Lunar White. * Redmi K40S is available in 4 colours: Bright Black, Silent Flower (

green Green is the color between cyan and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495570 nm. In subtractive color systems, used in painting and color printing, it is created by a com ...

), Silver Traces and Magic Mirror (blue-

purple Purple is a color similar in appearance to violet light. In the RYB color model historically used in the arts, purple is a secondary color created by combining red and blue pigments. In the CMYK color model used in modern printing, purple is ...

gradient).

References

External links

* * * * * * * * * {{Xiaomi Mobile phones introduced in 2021 Android (operating system) devices Phablets Mobile phones with multiple rear cameras Mobile phones with 4K video recording Mobile phones with infrared transmitter K40 Discontinued smartphones