Xiaomi Redmi K40
₹22,490
(Not Released in India)
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Xiaomi Redmi K20
₹22,999
(Out of Stock)
|
realme P4x
₹22,999
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Xiaomi Redmi K40 vs Xiaomi Redmi K20
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Comparing the Xiaomi Redmi K40 vs Xiaomi Redmi K20 across performance, display, camera, battery and storage to help determine the better smartphone.
Here is the summary of the results:
Performance: Xiaomi Redmi K40 runs at a higher processing speed of 3.2 GHz, while Xiaomi Redmi K20 runs at 2.2 GHz, making Xiaomi Redmi K40 the better performer.
Display: Xiaomi Redmi K40 offers a screen size of 6.67 inches, while Xiaomi Redmi K20 offers 6.39 inches, making Xiaomi Redmi K40 the larger display of the two. Xiaomi Redmi K40 features a Super AMOLED display compared to Xiaomi Redmi K20's AMOLED, making Xiaomi Redmi K40 the better display of the two.
Rear Camera: Both Xiaomi Redmi K40 and Xiaomi Redmi K20 feature a 48 MP primary rear camera.
Front Camera: Both Xiaomi Redmi K40 and Xiaomi Redmi K20 feature a 20 MP primary front camera.
Battery: Xiaomi Redmi K20 delivers longer battery life with 13h 38m, while Xiaomi Redmi K40 delivers None, making Xiaomi Redmi K20 the better pick for all day usage.
Storage: Xiaomi Redmi K20 offers higher internal storage with 64 GB, while Xiaomi Redmi K40 offers 128 GB, making Xiaomi Redmi K20 the better option for storage.
|
✕
Xiaomi Redmi K40
₹22,490
(Not Released in India)
|
✕
Xiaomi Redmi K20
₹22,999
(Out of Stock)
|
✕
realme P4x
₹22,999
Buy Now
|
Add to Compare
|
Summary
Release Date
|
12 Jan, 2022
|
22 Jul, 2019
|
10 Dec, 2025
|
Performance
|
|
|
|
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Snapdragon 870
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Snapdragon 730
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MediaTek Dimensity 7400 Ultra
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Octa Core (upto 3.2 GHz)
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Octa Core (upto 2.2 GHz)
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Octa Core (upto 2.6 GHz)
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6 GB RAM
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6 GB RAM
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6 GB RAM
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Display
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|
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6.67 inches (16.94 cm)
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6.39 inches (16.23 cm)
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6.72 inches (17.07 cm)
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Super AMOLED
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AMOLED
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LCD
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1080x2400 px (FHD+)
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1080x2340 px (FHD+)
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1080x2400 px (FHD+)
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120 Hz Refresh Rate
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N/A
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144 Hz Refresh Rate
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Rear Camera
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|
|
|
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48 MP
Wide Angle Primary Camera
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48 MP
Primary Camera
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50 MP
Wide Angle Primary Camera
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8 MP
Ultra-Wide Angle Camera
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13 MP
Ultra-Wide Angle Camera
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2 MP
Mono Camera
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5 MP
Macro Camera
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8 MP
Telephoto Camera (upto 2x Optical Zoom)
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N/A
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Front Camera
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|
|
|
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20 MP
Wide Angle Lens
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20 MP
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8 MP
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Battery
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|
|
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4520 mAh
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4000 mAh
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7000 mAh
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33W Fast Charging
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18W Quick Charging
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45W Super Charging
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N/A
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N/A
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No Wireless Charging
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Storage
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128 GB
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64 GB
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128 GB
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UFS 3.1
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UFS 2.1
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UFS 3.1
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Expert Review
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N/A
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7.0/10
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8.0/10
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Pros
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|
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Cons
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|
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User Ratings
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N/A
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4.5/5
(53,168 ratings)
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4.3/5
(16,755 ratings)
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Benchmarks (The higher, the better)
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N/A
|
209,539
AnTuTu Score
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974,831
AnTuTu Score
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N/A
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13h 38m
Battery Life (PC Mark)
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17h 38m
Battery Life (PC Mark)
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Compare Prices
|
Not Available in any store
|
Not Available in any store
|
₹22,999
@ Flipkart
|
Video
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There are no videos available for the device.
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User Feedback
General
Launch Date
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N/A
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Jul 22, 2019
(Official)
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Dec 04, 2025
(Official)
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Operating System
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Android v11
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Android v9.0 (Pie)
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Android v15
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OS Updates
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N/A
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N/A
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2 Years
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Security Updates
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N/A
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N/A
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3 Years
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Custom UI
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MIUI
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MIUI
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ColorOS
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Performance
Performance Rating
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Very Good
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Good
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Very Good
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Chipset
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Qualcomm Snapdragon 870
View Details
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Qualcomm Snapdragon 730
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MediaTek Dimensity 7400 Ultra MT6878T
View Details
|
Processor
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Octa core
3.2 GHz, Single core, Kryo 585 2.42 GHz, Tri core, Kryo 585 1.8 GHz, Quad core, Kryo 585 |
Octa core
2.2 GHz, Dual core, Kryo 470 1.8 GHz, Hexa Core, Kryo 470 |
Octa core
2.6 GHz, Quad core, Cortex A78 2 GHz, Quad core, Cortex A55 |
Architecture (The higher, the better)
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64 bit
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64 bit
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64 bit
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Fabrication (The lower, the better)
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7 nm
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8 nm
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4 nm
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Graphics (GPU)
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Adreno 650
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Adreno 618
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Mali-G615 MC2
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RAM
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6 GB
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6 GB
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6 GB / 8 GB
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RAM Type
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LPDDR5
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LPDDR4X
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LPDDR4X
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Cooling Technology
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N/A
|
N/A
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Vapor Chamber
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Performance Test Results
AnTuTu Score (The higher, the better) AnTuTu benchmark measures overall performance of a phone by stress-testing CPU, GPU, RAM, etc.
|
N/A
|
209,539
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974,831
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Bootup Time (The lower, the better)
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N/A
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15.0 s
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27.0 s
|
Gaming Test Results
Wild Life Extreme (The higher, the better) Wild Life Extreme is a classic mobile benchmark; it renders in 4K to test the peak performance of a wide range of devices.
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N/A
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N/A
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1,017
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Battery Drain* (The lower, the better)
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N/A
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12.0 %
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3.0 %
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Heating* (The lower, the better)
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N/A
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22.4 %
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21.1 %
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Display
Display Rating
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Excellent
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Excellent
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Excellent
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Display Type
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Super AMOLED
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AMOLED
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LCD
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Screen Size
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6.67 inches (16.94 cm)
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6.39 inches (16.23 cm)
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6.72 inches (17.07 cm)
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Resolution
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1080x2400 px (FHD+)
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1080x2340 px (FHD+)
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1080x2400 px (FHD+)
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Brightness
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1300 nits
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N/A
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N/A
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Peak Brightness
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N/A
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N/A
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950 nits
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HBM Brightness
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N/A
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N/A
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1000 nits
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Refresh Rate
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120 Hz
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N/A
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144 Hz
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Touch Sampling Rate
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N/A
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N/A
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240 Hz
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Aspect Ratio
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20:9
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19.5:9
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20:9
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Pixel Density
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395 ppi
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403 ppi
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391 ppi
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Screen to Body Ratio (calculated)
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85.88 %
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85.9 %
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86.42 %
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Screen Protection
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Corning Gorilla
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Corning Gorilla
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Yes
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Bezel-less Display
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Yes with punch-hole display
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Yes
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Yes with punch-hole display
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HDR 10 / HDR+ Support
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Yes HDR 10+
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Yes
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N/A
|
Screen to Body Ratio (claimed by the brand)
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N/A
|
91.9 %
|
91.4 %
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Design
Height
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163.7 mm
|
156.7 mm
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166 mm
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Width
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76.4 mm
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74.3 mm
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76 mm
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Thickness
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7.8 mm
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8.8 mm
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8.39 mm
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Weight
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196 grams
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191 grams
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208 grams
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Build Material
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N/A
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Back: Gorilla Glass
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Back: Glass Plastic
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Water Resistance
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N/A
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N/A
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Yes Splash proof IP64
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Ruggedness
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N/A
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N/A
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Dust proof
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Rear Camera
Rear Camera Rating
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Very Good
|
Very Good
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Very Good
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Resolution
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48 MP
Primary Cameraf/1.79 Wide Angle26 mm focal length 1/2" sensor size IMX582 Exmor-RS CMOS Sensor 0.8µm pixel size |
48 MP
Primary Cameraf/1.751/2" sensor size IMX586 Exmor-RS CMOS Sensor 0.8µm pixel size |
50 MP
Primary Camera10x Digital Zoomf/1.8 Wide Angle 76° field-of-view27 mm focal length 1/2.88" sensor size OV50D 0.61µm pixel size |
|
8 MP
f/2.2 Ultra-Wide Angle Camera |
13 MP
f/2.4 Ultra-Wide Angle Camera1/3" sensor size 1.12µm pixel size |
2 MP
f/2.4 Mono Camera1/5.1" sensor size 1.75µm pixel size |
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5 MP
f/2.4 Macro Camera1/5.0" sensor size 1.12µm pixel size |
8 MP
f/2.4 Telephoto Camera1/4.0" sensor size 1.12µm pixel size |
N/A
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Autofocus
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Yes
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Yes Phase Detection Autofocus
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Yes Phase Detection Autofocus
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OIS
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N/A
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N/A
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No
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Flash
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Yes LED Flash
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Yes Dual LED Flash
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Yes LED Flash
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Image Resolution
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8000 x 6000 Pixels
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8000 x 6000 Pixels
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3072 x 4096 Pixels
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Settings
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Exposure compensation ISO control
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Exposure compensation ISO control
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N/A
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Shooting Modes
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Continuous Shooting
High Dynamic Range mode (HDR) |
Continuous Shooting
High Dynamic Range mode (HDR) |
Continuous Shooting
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Camera Features
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Digital Zoom
Auto Flash Face detection Touch to focus |
Auto Flash
Face detection Touch to focus |
10 x Digital Zoom
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Video Recording
|
4k @30 fps
Full HD @30 fps |
4k @30 fps
Full HD @60 fps HD @120 fps |
4k @30 fps
Full HD @30/60/120 fps HD @30/60/120/240 fps |
Video Recording Features
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N/A
|
N/A
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Slow Motion
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Front Camera
Front Camera Rating
|
Very Good
|
Very Good
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Very Good
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Resolution
|
20 MP
f/2.4 Wide Angle Primary Camera1/3.4" sensor size 0.8µm pixel size |
20 MP
f/2.2 Primary Camera1/3.4" sensor size 0.8µm pixel size |
8 MP
f/2.0 Primary Camera1/4.0" sensor size 1.12µm pixel size |
Camera Type
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N/A
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Pop-Up
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N/A
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Autofocus
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N/A
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N/A
|
No
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Flash
|
N/A
|
N/A
|
No
|
Video Recording
|
Full HD @30 fps
|
Full HD @30 fps
HD @30 fps |
Full HD @30 fps
HD @30 fps |
Battery
Battery Rating
|
Very Good
|
Very Good
|
Very Good
|
Capacity
|
4520 mAh
|
4000 mAh
|
7000 mAh
|
Battery Type
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Li-Polymer
|
Li-Polymer
|
Li-Polymer
|
TalkTime
|
N/A
|
N/A
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Up to 49.9 Hours(2G)
|
Quick Charging
|
Yes 33W Fast Charging 100% in 52 minutes
|
Yes 18W Quick Charging v3.0
|
Yes 45W Super Charging 100% in 90 minutes
|
Reverse Charging
|
N/A
|
N/A
|
Yes 10W Reverse Charging
|
Battery Test Results
Battery Life (PC Mark) (The higher, the better) PCMark Battery benchmark measures battery life of a phone with various activities such as web browsing, photo editing, writing, video editing, etc.
|
N/A
|
13h 38m
|
17h 38m
|
Charging Time (20% to 100%) (The lower, the better)
|
N/A
|
1h 38m 18s
|
1h 25m
|
Storage
Internal Storage
|
128 GB
|
64 GB / 128 GB
|
128 GB / 256 GB
|
Storage Type
|
UFS 3.1
|
UFS 2.1
|
UFS 3.1
|
Expandable Storage
|
No
|
No
|
Yes Up to 2048 GB
|
Network & Connectivity
SIM Slot(s)
|
Dual SIM
|
Dual SIM
|
Dual SIM
|
SIM Type
|
SIM1: Nano SIM2: Nano
|
SIM1: Nano SIM2: Nano
|
SIM1: Nano SIM2: Nano
|
Network Support
|
5G 4G
|
5G Not Supported 4G
|
5G 4G
|
VoLTE
|
Yes
|
Yes
|
Yes
|
SIM 1
|
5G Bands: FDD N1 / N3 / N28
TDD N41 / N77 / N78 |
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) |
5G Bands: FDD N1 / N3 / N5 / N8 / N28
TDD N40 / N41 / N77 / N78 |
|
4G Bands: TD-LTE 2300(band 40)
FD-LTE 1800(band 3) |
N/A
|
4G Bands: TD-LTE 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5) |
View More
SIM 2
|
4G Bands: TD-LTE 2300(band 40)
FD-LTE 1800(band 3) |
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) |
5G Bands: FDD N1 / N3 / N5 / N8 / N28
TDD N40 / N41 / N77 / N78 |
|
N/A
|
N/A
|
4G Bands: TD-LTE 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5) |
View More
SAR Value
|
N/A
|
Head: 1.07 W/kg Body: 0.723 W/kg
|
Head: 1.180 W/kg Body: 0.720 W/kg
|
Wi-Fi
|
Yes Wi-Fi 5 (802.11 b/g/n/ac) 5GHz
|
Yes Wi-Fi 5 (802.11 b/g/n/ac) MIMO
|
Yes Wi-Fi 6 (802.11 a/b/g/n/ac/ax)
|
Wi-Fi Features
|
Mobile Hotspot
|
Wi-Fi Direct Mobile Hotspot
|
Mobile Hotspot
|
Bluetooth
|
Yes v5.1
|
Yes v5.0
|
Yes v5.4
|
GPS
|
Yes with A-GPS Glonass
|
Yes with A-GPS Glonass
|
Yes with A-GPS Glonass
|
NFC
|
Yes
|
N/A
|
No
|
IR Blaster
|
N/A
|
N/A
|
No
|
Multimedia
Stereo Speakers
|
N/A
|
N/A
|
Yes
|
Audio Jack
|
USB Type-C
|
3.5 mm
|
USB Type-C
|
Sensors
Fingerprint Sensor
|
Yes
|
Yes
|
Yes
|
Fingerprint Sensor Position
|
Side
|
On-screen
|
Side
|
Fingerprint Sensor Type
|
N/A
|
Optical
|
N/A
|
Other Sensors
|
Light sensor Proximity sensor Accelerometer Compass Gyroscope
|
Light sensor Proximity sensor Accelerometer Compass Gyroscope
|
Light sensor Proximity sensor Accelerometer Compass Gyroscope
|
Compare Prices
|
Not Available in any store
|
Not Available in any store
|
₹22,999
@ Flipkart
|