Xiaomi Redmi K40S 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 or Original (Chinese+English) - select below|
|Processing time for warranty service from||6 weeks|
|Processing time for warranty repair to||12 weeks|
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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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- Classic Snapdragon 870
- Classic Samsung E4 flagship straight screen
- Newly upgraded VC cooling
- Newly upgraded 67W flagship fast charge
- Newly upgraded OIS Optical image stabilization Reckless
- new design
- This K40S is born to be a ruthless character
*"Honor of Kings" 120 frames, 20 minutes in performance mode, the data comes from Xiaomi Labs.
this time, thin fly
Get started, have edges and corners, no burden.
Video entertainment, large-scale games, and file collaboration are all freely retractable.
to unleash gaming-grade performance
With AI multi-level intelligent temperature control, 9 temperature sensors, various algorithms, multi-level control.
Escort for more scene hot experience.
team battle is also super smooth
situation will be slightly different due to different test environments, test software, etc.
4500mAh large battery
takes only 38 minutes * to charge to 100%
67W fast charge, it only takes 38 minutes to fully charge.
4500mAh large power, carry long battery life.
has endured battery life and good blood recovery
Strictly control battery aging scenarios according to usage scenarios
is super bright, super true, super gorgeous
sensing , front and rear dual light perception and other good screen qualities, dare to compete with professional monitors.
for a private cinema in the palm of your hand
true restoration, delicate presentation
professional color standard
screen color standard
every eye is comfortable
comfort is greatly liberated.
360Hz high touch sampling rate
10X super-resolution touch*
with ultra-small medium hole, less occlusion
48 million pixel camera
this time, the picture is stable
level is upgraded. Shooting at will , the film completion rate is improved, not only that, the upgraded
computational photography can make you play better.
stabilizes the whole night
At the same time, OIS helps in secret, easily stabilizing the whole night.
Plays while Shooting, Doubles the Happiness
thick and three-dimensional, and the sound is immersive
Dolby Atmos panoramic sound professional tuning blessing, natural and realistic.
feedback is real and strong
- Snapdragon 870 Koubei flagship core
- LPDDR 5 ｜UFS 3.1 ｜ Wi-Fi 6
- 3112mm² liquid-cooled VC heat dissipation area
- 67W fast charge
- 4500mAh high power
- Samsung E4 AMOLED flagship straight screen
- 48MP OIS anti-shake camera
- Dolby Atmos｜Stereo dual speakers
- 7.7mm thin , 195g light
*The above data is the test data of Xiaomi laboratory, and the actual results may be slightly different depending on the different measurement methods in the industry.
Qualcomm Snapdragon 870
CPU architecture technology: Kryo 585 architecture, 7nm process
CPU frequency: octa-core processor, large-core A77, maximum frequency 3.2GHz
GPU: Adreno 650 graphics processor
12GB + 256GB up to optional
Running memory: 6GB/8GB/12GB
LPDDR5 high-speed memory
Body storage: 128GB/256GB
UFS3.1 high-speed storage
120Hz E4 AMOLED high-brush straight screen
Size: 6.67 inches
Screen opening: 2.76mm
Screen resolution: 2400 X 1080 FHD+
Touch sampling rate: up to 360Hz
Contrast ratio: 5,000,000:1
Peak brightness: 1300nit
Global brightness: 900nit
primary color screen丨8bit丨MEMC Frame Rate Compensation丨
Eye Protection Reading Mode丨Sunshine Screen丨HDR10+
Corning®️5th Generation Gorilla®️ Glass
48 million flagship main camera
IMX582, 1/2" sensor, f/1.79 large aperture, OIS
119° ultra-wide-angle lens
8 million pixels, AI distortion correction algorithm
2 megapixel macro
rear camera support
48 million ultra-clear丨AI magic clone丨front and rear double scenes丨AI magic kaleidoscope
AI Camera丨Super Night Scene丨Document Mode丨Cine Lens
ID card photocopying mode丨cute shot丨beauty at the back丨VLOG video
Time Lapse Photography丨Film Filters丨Voice Subtitles|Video Beauty丨Video Stabilization
960fps slow motion shooting丨Macro video shooting丨Short video recording
Portrait mode background blur丨Pro mode丨Dynamic photos丨Timed continuous shooting
Voice-activated photography丨Countdown photoshoot丨Level meter丨Reference line
Rear video capture frame rate
4K video capture: 30fps
1080P video shooting: 30fps/60fps
720P video shooting: 30fps
Slow motion frame rate
1080P video shooting: 120fps
720P video shooting: 120fps, 240fps, 960fps
Front 20 million AI beauty
Front camera support
Front and back dual scenes | Voice subtitles | Voice-activated photography丨Moeshot丨Film filter
Video Beauty丨Front Slow Motion丨Portrait Mode | 3D Beauty
Front Panorama丨Front Night Scene|Dynamic Photos丨Timed Continuous Shooting
Taking pictures in full screen | Gestures taking pictures | Front screen fill light
Countdown to take photos丨AI smart beauty丨Film light effect
Front video capture frame rate
1080p video capture: 30fps
720p video capture: 30fps
Slow motion frame rate
720p slow motion video capture: 120fps
built-in lithium-ion polymer battery, non-removable
USB Type-C charging port
Mobile phone supports QC3+ / PD3.0 fast charging protocol
Standard 67W charger
5G | Dual SIM | Full Netcom 7.0
Support dual Nano card slots, any operator can be 5G on the network ①Support
China Mobile/Unicom/Telecom 5G/4G/3G/2G ②Support
dual SIM 5G dual mode SA/NSA(Sub-6G) ③Support
dual SIM VoLTE HD Voice④
Note ②: Not supported TD-SCDMA (Mobile 3G);
Note ③: Whether to support SA/NSA depends on the local operator's network and service deployment; the secondary card does not support SA
Note ④: VoLTE services of China Mobile/Unicom/Telecom are supported, and the actual usage depends on Operator's local network and service deployment
Supported frequency bands
4G: FDD-LTE: B1/B2/B3/B4/B5/B8/B18/B19/B26
3G: WCDMA: B1/B2/B4/B5/B6/B8/B19
CDMA EVDO: BC0
2G: GSM: 850/900/1800/1900MHz;
CDMA 1X: BC0
Note ②: B41 (2496-2690MHz)
Wi-Fi 6 support
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 5.2
supports AAC / LDAC/LHDC
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
Dolby Vision certified
MP4, MKV, AVI, WMV, WEBM, 3GP, ASF
supports high dynamic range display when playing HDR10 video content
Dolby Atmos Certified
MP3, FLAC, APE, AAC, OGG, WAV, AMR-NB/AMR-WB
Hi-Res Audio Certified | Hi-Res Audio Wireless Certified | Dolby Atmos Certified Stereo Dual Speakers
360° Ambient Light Sensor | Acceleration Sensor | Gyroscope | Electronic Compass | Color Temperature Sensor | Linear Motor |
Mobile phone / power adapter / USB Type-C data cable / mobile phone protective case
film (already covered on the screen) / pin / instruction manual (including three packs of certificates)
1. In terms of memory and capacity, the actual available capacity will be reduced and different due to many factors: because the operating system occupies part of the memory (RAM), the actual available space is less than the marked memory capacity; due to the installation of the operating system and pre-installed programs Occupies part of the flash memory (ROM), and the actual available storage space is less than the indicated flash memory capacity.
2. The screen diagrams and product description display diagrams provided on this website are all reference diagrams, and the actual situation shall prevail in kind.
3. 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 tests, and the comparisons involved are all compared with Redmi products.
4. The general mobile phones compared on the page are all Redmi's own mobile phones. The product site does not specifically point out that all data are provided by our company's laboratory data, design technical parameters and suppliers. The actual situation of the whole site data 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 object shall prevail.
*Using the 67W charger in the box and testing it with the screen off, the data comes from Xiaomi Labs.
*Honor of Kings 120 frames, measured in 20 minutes performance mode.
*4500mAh is the typical value of Redmi K40 battery capacity.
*Compared with K40, the cooling area of liquid cooling is increased by 400%. The data comes from Xiaomi Lab.
*Super-resolution touch data are all from Xiaomi Labs, and the actual situation may vary slightly depending on the test environment, test software, etc.
* The data comes from Xiaomi Lab, the body weight is 1g lighter than the K40, and the thickness is 0.1 mm thinner than the K40.
*The general mobile phones compared on the page are Redmi's own mobile phones. The product station is not specially pointed out, all of which are our laboratory data, involving technical parameters and data provided by suppliers, the actual situation of the whole station data will be slightly different due to different test software versions. The structural pictures displayed on the whole site are all functional schematic diagrams, not the absolute actual structure, and the actual object shall prevail.
No customer questions for the moment.