Xiaomi Redmi K40
#1112
Xiaomi Redmi Note 12
#2094Category Breakdown
Xiaomi Redmi K40
Xiaomi Redmi Note 12
Performance
90.582.6
Camera
68.128.4
Display
93.790.2
Battery
31.033.7
Build
0.214.8
Connectivity
83.581.3
Audio
87.68.9
Overall
63.051.8
Summary
- The Xiaomi Redmi K40 features a Super AMOLED display with a peak brightness of 1300 nits and HDR10+ support, while the Redmi Note 12 has an AMOLED display with a peak brightness of 1200 nits but lacks HDR support.
- In terms of performance, the K40 is powered by the Snapdragon 870, offering superior processing capabilities compared to the Snapdragon 4 Gen 1 in the Note 12.
- Both phones have a 48 MP main camera, but the K40 can record video at 4K resolution, whereas the Note 12 is limited to 1080p.
- The K40 has a smaller 4520 mAh battery compared to the 5000 mAh battery in the Note 12, although both support 33W charging.
- Software-wise, the K40 runs on Android 11 with MIUI 12, while the Note 12 comes with Android 12 and MIUI 14, providing a more updated software experience.
Side-by-side Specification Comparison
Xiaomi Redmi K40
Xiaomi Redmi Note 12
General
Release Date
2021, February 25
2022, October 27
Announced
2021, February 25
2022, October 27
Description
N/A
Also known as Xiaomi Redmi Note 12 5GNot to be confused withXiaomi Redmi Note 12 4GandXiaomi Redmi Note 12 5Gfor China market
Display
Size
6.67"
6.67"
Type
Super AMOLED, 120Hz, HDR10+, 1300 nits (peak)
AMOLED, 120Hz, 1200 nits (peak)
Resolution
1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
PPI
1080
1080
Refresh Rate
120Hz
120Hz
HDR Support
✓
✗
Protection
Corning Gorilla Glass 5
Corning Gorilla Glass 3
Performance
Chipset
Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)
Qualcomm SM4375 Snapdragon 4 Gen 1 (6 nm)
CPU
Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
Octa-core (2x2.0 GHz Cortex-A78 & 6x1.8 GHz Cortex-A55)
GPU
Adreno 650
Adreno 619
Memory
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
128GB 4GB RAM, 128GB 6GB RAM, 256GB 8GB RAM
Expandable Storage
✗
✗
Card Slot
No
microSDXC (uses shared SIM slot)
Camera
Main Camera
48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF8 MP, f/2.2, 119˚ (ultrawide)5 MP, f/2.4, 50mm (macro), 1/5.0", 1.12µm
48 MP, f/1.8, (wide), PDAF8 MP, f/2.2, 120˚ (ultrawide), 1/4.0", 1.12µm2 MP, f/2.4, (macro)
Main Camera Features
Color spectrum sensor, LED flash, HDR, panorama
Dual-LED dual-tone flash, HDR, panorama
Front Camera
20 MP, f/2.5, (wide), 1/3.4", 0.8µm
13 MP, f/2.5, (wide), 1/3.0"
Front Camera Features
HDR
HDR
Video Recording
4K@30fps, 1080p@30/60/120/240/960fps, gyro-EIS
1080p@30fps
Selfie Video
1080p@30fps, 720p@120fps
1080p@30fps
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
4520 mAh
5000 mAh
Battery Details
Li-Po 4520 mAh
Li-Po 5000 mAh
Charging Details
33W wired, PD3.0, QC3, 100% in 52 min
33W wired, 50% in 22 min
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
163.7 x 76.4 x 7.8 mm (6.44 x 3.01 x 0.31 in)
165.9 x 76.2 x 8 mm (6.53 x 3.00 x 0.31 in)
Weight
196 g
188 g
Materials
N/A
N/A
Colors
Black, White, Aurora
Frosted Green, Matte Black, Mystique Blue
Foldable
✗
✗
SAR
N/A
1.09 W/kg (head) 1.05 W/kg (body)
Connectivity
SIM
Nano-SIM + Nano-SIM
Nano-SIM + Nano-SIM
Network
GSM / CDMA / HSPA / CDMA2000 / LTE / 5G
GSM / HSPA / LTE / 5G
Network Speed
HSPA, LTE, 5G
HSPA, LTE (CA), 5G
5G
✓
✓
4G
✓
✓
WiFi
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
5.1, A2DP, LE
5.1, A2DP, LE
NFC
✓
✓
USB
USB Type-C 2.0, OTG
USB Type-C 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✗
✓
Radio
✗
✗
Positioning
GPS (L1+L5), GLONASS (G1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC
GPS, GLONASS
Audio
Stereo Speakers
✓
✗
Loudspeaker
Yes, with stereo speakers
Yes
Audio Jack
No
Yes
Software & Security
Operating System
Android 11, MIUI 12
Android 12, MIUI 14 (International), MIUI 13 (India)
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass