Xiaomi Redmi K40 (5G) 12GB+256GB Black
|Possibility to return:||Yes, within 14 days to warehouse in USA / UK or EU|
|Length of warranty||12 months|
|Warranty Extension:||At promotional terms, up to 24 months (during checkout)|
|Rom:||Global (Multilanguage + Google Apps) applied over original|
|Processing time for warranty service from||6 weeks|
|Processing time for warranty repair to||12 weeks|
Other variants / accessories
Available delivery options:
Approximate delivery date
Estimated order completion date:
NOTE: This deadline has been calculated for the transfer booked on the next business day after placing the order or when selecting the cash on delivery payment. If your transfer is credited later, the deadline may be delayed.
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Frequently Asked Questions
Delivery dates are provided on every product page, below product name. When you'll click the dates, a calendar will appear.
AFTER YOU MAKE AN ORDER: These dates are also available at your customer area -> order history, and with the e-mail with order confirmation.
The price of the product is final, however, there may be costs when crossing the border of your country, depending on the type of declaration you submit. You can ask us for any customs declaration during the cart submission process, you can enter this value in the "Customs declaration" or "Comments" field. However, sometimes Customs will not respect these values so it is a good idea to be prepared to pay the domestic tax when your package arrives.
In EU and UK you are going to pay your country VAT from declared value (ex. 20% in UK) + small clearance fees depending on the delivery method, for details please ask local DHL, Fedex or UPS customs agency.
If you are a European citizen / entity and have an EORI number, you can deduct this tax later.
USA customers/entities do not pay tax.
In most cases we can ship to your country, you can check the cost after you'll add product of your choice to the cart (no purchase is needed).
Dear, this product is factory unlocked, should work in your country. If it's smartphone or have GSM model it might be wise to compare it's LTE/5G frequencies with the LTE/5G frequencies of your network to confirm coverage compatibility (they are listed in the product description). If frequencies aren't listed there, please contact us.
List of the package contents is usually listed at the end of the product description.
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A bit ruthless true flagship
's new year masterpiece, which will bring a new standard for flagship mobile phones to 2021.
The performance is a bit tough, equipped with the flagship Snapdragon 870 of the year, the
screen is a bit tough, equipped with a new generation of E4 flagship straight screen, the
gaming experience is a bit tough, the gaming-grade high-brush super touch,
design, battery life, quality, and more aspects are a tough role .
Real flagship, hard core, just for your desperate love.
UFS 3.1 second-speed loading
Every eye of the E4 AMOLED screen is quite dazzling
it may be the smallest hole in the world
energy and professional display
under a high
professional monitor is Delta E <2
JNCD = 1 is the smallest unit for human eyes to distinguish colors
cold light and warm light of the screen
conform to your ambient light
sun, super clear
, very comfortable at night
- Sunshine screen 3.0See more clearly under strong light
- Luminous screenNot glaring at night
- 360° super light perceptionAccurately capture ambient light
- SGS Eye Care CertificationBlue light is greatly reduced
, fire a shot first
High-end immersive sound experience
- High-resolution audio certification
- High-resolution wireless audio certification
- Stereo dual speakersImmersive external sound experience
- Game TunerProfessional-level gaming performance tuning
like PC graphics card customization parameters
- Bright black
enough power, enough for a good show
Charge to 100%* in 52 minutes, comparable to traditional 55W fast charge
Take a side fingerprint to wake up health treasure* It's so
convenient to wake up
- Ultra-clear main camera48 million
- Ultra wide-angle lens800w
- Telephoto macro lens5000000
- Ultra-clear main camera
- Portrait mode
- Ultra wide angle
night photographer, now in place
Look at the front 20 million AI beauty , you are so beautiful
your director's masterpiece,
start shooting at any time.
- 8 movie filtersMaster movie tones
can be obtained with one click
- Movie frame2.39:1 wide-format
- Video tagIt is
more convenient to mark key positions and edit
scratch-resistant and wear-resistant
, and it is durable
Samsung E4 AMOLED high-brush straight screen
LPDDR5 | UFS3.1 | WiFi6
48 million high-definition camera
7.8mm thin design
4520mAh large battery
Dolby Atmos | dual stereo speakers
Width : 76.4mm
*The above data is the test data of one meter laboratory. The actual results may vary slightly according to different measurement methods in the industry.
Qualcomm Snapdragon 870
CPU architecture process: Kyro585 architecture, 7nm process
CPU frequency: eight-core processor, large-core A77, the highest frequency is 3.2GHz
GPU: Adreno 650 graphics processor
Memory and capacity
12GB + 256GB up to optional
Operating memory: 6GB/8GB/12GB
LPDDR5 high-speed memory.
Body storage: 128GB/256GB
UFS3.1 high-speed storage
120Hz E4 AMOLED high-refresh rate straight screen
Size: 6.67 inches
Screen opening: 2.76mm
Screen resolution: 2400 X 1080 FHD+
Display frame rate: 120Hz refresh rate
Touch sampling rate: 360Hz
Contrast ratio: 5,000,000:1
Peak brightness: 1300nit
Global brightness: 900nit
primary color screen丨8bit丨MEMC frame rate compensation Shu Shu sun screen reading mode eye Shu HDR10 +
Corning ®️ 5th generation gorilla ®️ glass
48 million super clear main camera
IMX582, 1/2" sensor, f/1.79 large aperture
119° ultra-wide-angle lens
8 million pixels, AI distortion correction algorithm
Telephoto macro lens
5 million pixels, equivalent to 50mm focal length
Rear camera support
48 million super clear丨AI magic clone丨front and rear dual scenes丨AI magic kaleidoscope | AI camera丨super night scene丨document mode丨movie lens丨ID card photocopying mode丨cute shooting丨post-beauty-plastic丨VLOG video丨AI blockbuster Video丨Time-lapse photography丨Film filters丨Voice subtitles|Video beauty丨Video anti-shake丨960fps slow motion shooting丨Macro video shooting丨Short video recording丨Portrait mode background blur丨Professional mode丨Dynamic photos丨Timed continuous shooting丨Voice control photo丨Countdown photo丨Level meter丨Reference line
Rear video shooting frame rate
|4K video recording:||30fps|
|1080P video shooting:||30fps/60fps|
|720P video recording:||30fps|
Slow motion shooting frame rate
|1080P video shooting:||120FPS, 240FPS, 960FPS|
|720P video recording:||120FPS, 240FPS, 960FPS|
Front 20 million AI beauty
Front camera support
AI Camera丨Front and Rear Dual Views| Voice Subtitles|Voice Control Photography丨Moe Shooting丨Movie Filters丨Video Beautification丨Movie Lens丨Front Slow Motion丨Portrait Mode|3D Beauty Beautification|Front Panorama丨Front Night Scene|Dynamic Photo丨Timed continuous shooting丨Photo full-screen frame丨Gesture photo丨Front screen fill light丨Countdown photo丨AI smart beauty丨Movie light effects | AI separation of people and scenes
Front video shooting frame rate
|1080p video recording:||30fps|
|720p video recording:||30fps|
Slow motion shooting frame rate
|720p slow motion video shooting:||120fps|
Battery life charging
built-in lithium-ion polymer battery, non-removable
USB Type-C charging interface,
mobile phone supports QC3 + / PD3.0 fast charging protocol,
standard 33W charger
Network frequency band
SA/NSA Dual Mode | Dual SIM | Full Netcom 6.0
Any support dual card operators, can use the main card 5G, Vice card 4G network ① in
dual Nano-SIM card slot (double-sided SIM card slot)
supports Mobile / Unicom / Telecom 5G / 4G / 3G / 2G②
support 5G dual-mode SA/NSA (Sub-6G) ③Support
dual-SIM VoLTE HD voice ④
Note②: not supported TD-SCDMA standard (mobile 3G);
Note ③: Whether to support SA/NSA depends on the local operator’s network and service deployment;
Note ④: Support for VoLTE services of China Mobile, China Unicom, and China Telecom. The actual usage depends on the operator’s local network and Business deployment;
Support frequency band
5G: n1 / n3 / n28A / n41 / n77 / n78①
4G: FDD-LTE: B1 / B2 / B3 / B4 / B5 / B7 / B8 / B18 / B19 / B26 / B28A②
TDD-LTE: B34 / B38 / B39 / B40 / B41 / B42③
3G: WCDMA: B1 / B2 / B4 / B5 / B6 / B8 / B19
CDMA EVDO: BC0
2G: GSM: 850/900/1800 / 1900MHz;
CDMA 1X: BC0
Note②: B28A (TX: 703-733MHz, RX: 758-788MHz) Note③
: B41 (2496-2690MHz)
Support WiFi 6
WLAN protocol: Wi-Fi 6, Wi-Fi 5, Wi-Fi 4 and 802.11a/b/g
WLAN frequency: 2.4G Wi-Fi | 5G Wi-Fi
Wi-Fi Direct, Miracast
Bluetooth: Bluetooth 5.1
supports AAC / LDAC / LHDC
Dolby Atmos certification
MP3, FLAC, APE, AAC, OGG, WAV, WMA, AMR-NB/AMR-WB
Hi-Res Audio certification| Hi-Res Audio Wireless certification| Dolby Atmos certification| Stereo dual speakers
After the Tianxing Finance·Wallet App is opened, you can use traffic card, Mi Pay, door card, eID*, electronic car key* and other functions by double-clicking the power button.
Transportation card: support more than 311 cities, support 41 kinds of bus cards* transfer card, support free old card transfer to new machine and simultaneous transfer of card balance.
(Transport card support cities due to differences in technical conditions, cities, etc., subject to actual conditions; the available range of credit card terminals and ride discounts are subject to the announcements of local governments and operating companies.)
Mi Pay: Support online payment, offline Payment, UnionPay QR code, UnionPay card payment, UnionPay one-touch payment.
Door card: door card simulation, Mijia smart door lock, virtual door card, custom blank card. (Only unencrypted door cards with a frequency band of 13.56 MHz can be simulated. Bank cards with door card functions and door cards with functions such as stored-value consumption and bus consumption cannot be simulated temporarily. Even if the simulation is successful, these cards will not be simulated. It has functions such as banking and public transportation.)
Smart card selection: Smart switch between door card and transportation card.
The specific number of cities supported, city names, banks, number of cards, eID partner hotels list, electronic car key partner models, etc.,
are subject to actual conditions.
For further information, please follow the official WeChat account of "Skystar Financial Wallet";
devices and versions supported by smart card selection, for further information: https://www.mipay.com/#/
Navigation and positioning
Beidou: B1I + B2a | GPS: L1 + L5 | Galileo: E1 + E5a
| GLONASS: G1 | QZSS: L1 + L5 | NavIC: Support
AGNSS: A-GPS, A-GLONASS, A-BDS| Data network positioning | WiFi Network positioning | sensor assisted positioning
MP4, MKV, AVI, WMV, WEBM, 3GP, ASF
support high dynamic range display when playing HDR10 video content
360° Ambient Light Sensor | Acceleration Sensor | Gyroscope | Electronic Compass | Color Temperature Sensor | Linear Motor | Infrared Remote Control丨Ultrasonic Distance Sensor
MIUI 12 is
based on Android 11
Mobile phone host / power adapter / USB Type-C data cable / mobile phone protective shell
film (covered on the screen) / pin / manual (including three packs of certificates)
* In terms of memory and capacity, the actual available capacity will be reduced and different due to many factors: due to the operating system running occupies part of the memory (RAM), the actual available space is less than the identified memory capacity; due to the installed operating system and pre-installed programs occupy Part of the flash memory (ROM), the actual available storage space is less than the capacity of the identified flash memory.
* The screen diagrams and product description display diagrams provided on this website are all reference diagrams, and the actual situation is subject to the actual product.
* Product pictures, models, data, functions, performance, specifications, user interface and other product information are for reference only. Redmi may improve the above content. For specific information, please refer to the actual product and product manual. Unless otherwise specified, the data involved in this website are the results of Xiaomi's internal testing, and the comparisons involved are all compared with Redmi products.
* The general mobile phones compared on the page are all Redmi's own mobile phones. The product site does not specifically point out that it is provided by our laboratory data, design technical parameters and suppliers. The actual data of the whole site will be slightly different due to different test software versions, specific test environments, and specific versions. The structural pictures displayed on the whole site are all functional schematic diagrams, not the absolute actual structure, and the actual product shall prevail.
*Comparison data of performance, CPU and GPU are all from Xiaomi Labs. Due to different test environments, the specific values will be slightly different, and the actual situation shall prevail.
*E4 has a 15% reduction in power consumption compared to E3.
*Turn on and upgrade MIUI, you can experience super-resolution touch.
*Dolby Atmos requires an OTA upgrade at the end of April 2021. (The specific time is subject to the final push received)
*Charging data comes from Xiaomi Labs, which means that it takes 52 minutes to charge the K40 to 100%. The actual situation will vary slightly depending on the test software version, the specific test environment, and the specific version, and the actual use time shall prevail.
*4520mAh is the typical value of Redmi K40 battery capacity.
*Upgrading MIUI after booting, you can enjoy the convenience of calling up the health code by double-clicking on your fingertip (double-clicking on the back or tapping the fingerprint side button) (currently only supports tapping to call up the Alipay health code).
*The general mobile phones compared on the page are Redmi's own mobile phones. The product site does not specifically point out that it is the laboratory data of our company, involving technical parameters and data provided by the supplier. The actual data of the whole site will be slightly different due to different versions of the test software. The structure pictures displayed on the whole site are all functional schematic diagrams, not the absolute actual structure, and the actual product shall prevail.
No customer questions for the moment.