Category Breakdown
Xiaomi Mi 10 Ultra
Xiaomi Redmi K40S
Performance
88.890.5
Camera
97.785.7
Display
93.393.2
Battery
91.230.6
Build
81.173.7
Connectivity
84.483.9
Audio
87.687.6
Overall
81.574.1
Summary
- The Xiaomi Mi 10 Ultra features a premium build with Gorilla Glass 5 front and Gorilla Glass 6 back, weighing 221.8g, while the Xiaomi Redmi K40S has a lighter design with a plastic back, weighing 195g.
- Both smartphones have a 6.67" display, but the Mi 10 Ultra uses an OLED panel with a peak brightness of 1120 nits, compared to the K40S's AMOLED display with a higher peak brightness of 1300 nits.
- In terms of performance, the Mi 10 Ultra is powered by the Snapdragon 865, while the K40S utilizes the Snapdragon 870, offering slightly better efficiency.
- Camera capabilities are robust on both, with the Mi 10 Ultra providing a more versatile setup including a periscope telephoto lens, while the K40S has a simpler configuration.
- Both devices have a 4500mAh battery, but the Mi 10 Ultra supports faster charging at 120W versus the K40S's 67W.
- Software-wise, the Mi 10 Ultra runs Android 10 with MIUI 12.5, while the K40S comes with Android 12 and MIUI 13, offering a more updated software experience.
Side-by-side Specification Comparison
Xiaomi Mi 10 Ultra
Xiaomi Redmi K40S
General
Release Date
2020, August 11
2022, March 17
Announced
2020, August 11
2022, March 17
Description
N/A
N/A
Display
Size
6.67"
6.67"
Type
OLED, 1B colors, 120Hz, HDR10+, 800 nits (HBM), 1120 nits (peak)
AMOLED, 120Hz, HDR10+, 1300 nits (peak)
Resolution
1080 x 2340 pixels, 19.5:9 ratio (~386 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 5
Performance
Chipset
Qualcomm SM8250 Snapdragon 865 5G (7 nm+)
Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)
CPU
Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55)
Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
GPU
Adreno 650
Adreno 650
Memory
128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM, 512GB 16GB RAM
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
Expandable Storage
✗
✗
Card Slot
No
No
Camera
Main Camera
48 MP, f/1.9, 25mm (wide), 1/1.32", 1.2µm, PDAF, OIS48 MP, f/4.1, 120mm (periscope telephoto), 1/2.0", 0.8µm, PDAF, OIS, 5x optical zoom12 MP, f/2.0, 50mm (telephoto), 1/2.55", 1.4µm, dual pixel PDAF, 2x optical zoom20 MP, f/2.2, 128˚, 12mm (ultrawide), 1/2.8", 1.0µm, PDAF
48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF, OIS8 MP, 119˚ (ultrawide)2 MP, f/2.4, (macro)
Main Camera Features
Laser AF, color spectrum sensor, Dual-LED flash, HDR, panorama
Color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama
Front Camera
20 MP, f/2.3, (wide), 1/3.4", 0.8µm
20 MP, (wide)
Front Camera Features
HDR
N/A
Video Recording
8K@24fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS, HDR10 rec.
4K@30fps, 1080p@30/60/120fps, 720p@960fps; gyro-EIS
Selfie Video
1080p@30fps, 720p@120fps, gyro-EIS
1080p@30/120fps
Optical Stabilization
✓
✓
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
4500 mAh
4500 mAh
Battery Details
Li-Ion 4500 mAh, graphene-enhanced
Li-Po 4500 mAh
Charging Details
120W wired, PD3.0, QC5, 41% in 5 min, 100% in 23 min50W wireless, 100% in 40 min10W reverse wireless
67W wired, PD3.0, QC3, 100% in 38 min
Fast Charging
✗
✗
Wireless Charging
✓
✗
Build & Safety
Dimensions
162.4 x 75.1 x 9.5 mm (6.39 x 2.96 x 0.37 in)
163.2 x 76 x 7.7 mm (6.43 x 2.99 x 0.30 in)
Weight
221.8 g
195 g
Materials
Glass front (Gorilla Glass 5), glass back (Gorilla Glass 6), aluminum frame
Glass front (Gorilla Glass 5), plastic back
Colors
Obsidian Black, Mercury Silver, Transparent Edition
Black, Gray, Blue, Green
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Nano-SIM + Nano-SIM
Nano-SIM + Nano-SIM
Network
GSM / CDMA / HSPA / EVDO / LTE / 5G
GSM / CDMA / HSPA / CDMA2000 / LTE / 5G
Network Speed
HSPA, LTE, 5G
HSPA, LTE, 5G
5G
✓
✓
4G
✓
✓
WiFi
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, DLNA
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Bluetooth
5.1, A2DP, LE, aptX HD
5.2, 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)
GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)
Audio
Stereo Speakers
✓
✓
Loudspeaker
Yes, with stereo speakers
Yes, with stereo speakers
Audio Jack
No
No
Software & Security
Operating System
Android 10, MIUI 12.5
Android 12, MIUI 13
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass, barometer
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass

