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5G AMOLED Smartphone

Xiaomi Redmi K40 5G Premium Edition Dual SIM TD-LTE CN 128GB M2012K11AC (Xiaomi Alioth)

Xiaomi · Announced Feb 2021

About Xiaomi Redmi K40 5G

The Xiaomi Redmi K40 5G presents a sleek silhouette, measuring 76.4 mm wide, 163.7 mm tall and just 7.8 mm thick, while tipping the scales at a modest 196 grams. Its front is dominated by a 6.67‑inch AM‑OLED panel that delivers vivid colours and deep blacks at a Full HD+ resolution of 1080 by 2400 pixels, offering a comfortable viewing experience for media and gaming alike.

Under the hood, the device runs Google Android 11 out of the box and is equipped with a generous 12 GiB of RAM, ensuring smooth multitasking and responsive performance. Power comes from a 4520 mAh battery designed to keep the phone going through a day of typical use, and connectivity is handled via a single SIM slot, keeping the design straightforward while still supporting 5G networks.

This variant

This Premium Edition trim reduces the memory to 8 GiB compared with the base model’s 12 GiB.

It ships with 128 GB of storage, distinguishing it from the other Premium Edition model that offers 256 GB with the same 8 GiB RAM, and from the Top Edition that pairs 256 GB with 12 GiB RAM. Relative to the Standard Edition’s 128 GB/6 GiB setup, this variant provides a step‑up in RAM while keeping the storage size unchanged.

Technical Specifications

Display
Size
6.67 inch
Type
Color AM-OLED display
Resolution
1080x2400
Color depth
24-bit, 11-bit HDR
Panel
Samsung
Screen-to-body
85.9%
Active area
69.52 × 154.49 mm
Touch
Capacitive multi-touch sensing screen, 10-point, 360 Hz sampling
Punch-hole
Yes
Performance
Processor
Snapdragon 870 5G
CPU
Octa-core, up to 3.2 GHz
GPU
Qualcomm Adreno 650
Process
7 nm
Platform
Google Android
Memory
RAM
8 GiB
Battery
Capacity
4520 mAh
Type
Lithium-ion polymer (LiPo)
Cells
1 cell in parallel
Cameras
Main
8000×6000 · 1× optical visibility
Front
5120×3840 visibility
Dimensions
Size
76.4 × 163.7 × 7.8 mm
Weight
196 g
Connectivity
Wi-Fi
Wi-Fi 6
Wi-Fi services
Miracast, Wi-Fi Direct, Wi-Fi Tethering, WiDi, Wi-Fi Calling (VoWiFi)
Bluetooth profiles
A2DP, A2DP with aptX codec, A2DP with aptX HD codec, AVRCP, GAP, GAVDP, HID, HSP, MAP, OPP, PAN, PBA
USB
USB Type-C reversible
USB services
USB charging, USB fast charging, USB Host, USB On-The-Go 1.3, USB On-The-Go 2.0, USB Power Delivery, USB Power Delivery 2.0, USB Power Delivery 3.0
NFC
NFC A, NFC B
GPS
GPS, GLONASS, Galileo, BeiDou, QZSS
GPS services
Simultaneous GPS (S-GPS), Assisted GPS, Kétfrekvenciás GPS, Geotagging, QuickGPS, QZSS, NavIC
NR · 3 bandsTD-NR · 4 bandsLTE · 11 bandsTD-LTE · 6 bandsUMTS · 7 bandsGSM · 4 bandsCDMA · 1 bands
All NR bands (3)
  • NR 1800 MHz (N3)
  • NR 2100 MHz (N1)
  • NR 700 MHz (N28)
All TD-NR bands (4)
  • TD-NR 2500 MHz (N41)
  • TD-NR 3500 MHz (N78)
  • TD-NR 3500 MHz (N78) bands
  • TD-NR 3700 MHz (N77)
All LTE bands (11)
  • LTE 1700/2100 MHz (Band 4, AWS)
  • LTE 1800 MHz (Band 3)
  • LTE 1900 MHz (Band 2, PCS)
  • LTE 2100 MHz (Band 1)
  • LTE 2600 MHz (Band 7)
  • LTE 700 MHz (Band 28)
  • LTE 800 MHz (Band 18)
  • LTE 800 MHz (Band 19)
  • LTE 850 MHz (Band 26)
  • LTE 850 MHz (Band 5)
  • LTE 900 MHz (Band 8)
All TD-LTE bands (6)
  • TD-LTE 1900 MHz (Band 39)
  • TD-LTE 2000 MHz (Band XXXIV)
  • TD-LTE 2300 MHz (Band XL)
  • TD-LTE 2500 MHz (Band XLI)
  • TD-LTE 2600 MHz (Band 38)
  • TD-LTE 3500 MHz (Band XLII)
All UMTS bands (7)
  • UMTS 1700/2100MHz (Band IV, AWS)
  • UMTS 1900MHz (Band II, PCS)
  • UMTS 2100MHz (Band I, IMT)
  • UMTS 800MHz (Band VI)
  • UMTS 800MHz (Band XIX)
  • UMTS 850MHz (Band V, CLR)
  • UMTS 900MHz (Band VIII)
All GSM bands (4)
  • GSM 1800MHz (B3)
  • GSM 1900MHz (PCS, B2)
  • GSM 850MHz (B5)
  • GSM 900MHz (B8)
All CDMA bands (1)
  • CDMA 800MHz (BC0, 850)
Audio
Channels
stereo
Output
USB Type-C
Sensors
Sensors
Accelerometer, Compass, Fingerprint sensor, Gyroscope, Light intensity sensor, Proximity sensor, Step counter
Features
Fingerprint
Yes (fingerprint sensor)
SIM
Nano-SIM (4FF) · Dual standby
Markets
Asia (China)
Extras
Haptic touch feedback, Tactile touch feedback
Software extras
Voice Command, Business card recognition, Navigation software, Augmented Reality (AR), Intelligent personal assistant, Voice Recognition, Face Recognition
Regulatory
Data status
Final

Model Variants

3 other phones with the same base model: Xiaomi Redmi K40 5G

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