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Xiaomi Redmi Note 9S vs Redmi K30

Here we compared two mid-range smartphones: the 6.67-inch Xiaomi Redmi Note 9S (with Qualcomm Snapdragon 720G) that was released on March 23, 2020, against the Xiaomi Redmi K30, which is powered by Qualcomm Snapdragon 730G and came out 4 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Xiaomi Redmi Note 9S
  • Shows 26% longer battery life (127 vs 101 hours)
  • Comes with 520 mAh larger battery capacity: 5020 vs 4500 mAh
Reasons to consider the Xiaomi Redmi K30
  • Higher display refresh rate – 120 Hz
  • Delivers 26% higher maximum brightness (724 against 576 nits)
  • Optical image stabilization

Review

Display
Screen quality, color accuracy, brightness
Performance
CPU/GPU performance in apps and games
Battery
Battery life, charging type and speed
Camera
Photo and video recording quality
Connectivity
Networks, ports, data transmission
NanoReview score
Final comparison evaluation

Value for money

You can enter your local price of these phones (in USD or any other currency) and click on the "Calculate" button to see which one has a better value for money.
Price

Tests and specifications

Comparison table of technical specifications and tests

Display

Type IPS LCD IPS LCD
Size 6.67 inches 6.67 inches
Resolution 1080 x 2400 pixels 1080 x 2400 pixels
Aspect ratio 20:9 20:9
PPI 395 ppi 395 ppi
Refresh rate 60 Hz 120 Hz
HDR support Yes, HDR10 Yes, HDR10
Screen protection Corning Gorilla Glass 5 Corning Gorilla Glass 5
Screen-to-body ratio 84.5% 84.8%
Display features - - Always-On Display
- DC Dimming
Display tests
RGB color space 114.9% -
PWM Not detected -
Response time 34 ms -
Contrast 1111:1 -
Max. Brightness
576 nits
Redmi K30 +26%
724 nits
Sources: NotebookCheck [1]

Design and build

Height 166 mm (6.54 inches) 165.3 mm (6.51 inches)
Width 77 mm (3.03 inches) 76.6 mm (3.02 inches)
Thickness 8.8 mm (0.35 inches) 8.8 mm (0.35 inches)
Weight 210 gramm (7.41 oz) 208 gramm (7.34 oz)
Waterproof No No
Rear material Glass Glass
Frame material Plastic Plastic
Colors White, Black, Blue White, Blue, Red, Purple
Fingerprint scanner Yes, in home button Yes, in home button
Screen-to-body ratio
84.8%

Performance

Tests of Xiaomi Redmi Note 9S and Xiaomi Redmi K30 in the benchmarks
SoC
Chipset Qualcomm Snapdragon 720G Qualcomm Snapdragon 730G
Max. clock 2300 MHz 2200 MHz
CPU cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6 cores at 1.8 GHz: Kryo 465 Silver (Cortex-A55)
- 2 cores at 2.3 GHz: Kryo 465 Gold (Cortex-A76)
- 6 cores at 1.8 GHz: Kryo 470 Silver (Cortex-A55)
- 2 cores at 2.2 GHz: Kryo 470 Gold (Cortex-A76)
L3 cache 1 MB -
Lithography process 8 nanometers 8 nanometers
Graphics Adreno 618 Adreno 618
GPU clock 750 MHz 575 MHz
FLOPS ~435 GFLOPS ~422 GFLOPS
Memory
RAM size 4 GB 6, 8 GB
Memory type LPDDR4X LPDDR4X
Memory clock 2133 MHz 1866 MHz
Channels 2 2
Storage
Storage size 64 GB 64, 128, 256 GB
Storage type UFS 2.1 UFS 2.1
Memory card MicroSD MicroSD
Memory card max. size Up to 512 GB Up to 256 GB

Benchmarks

Geekbench 5 (Single-Core)
575
548
Geekbench 5 (Multi-Core)
1789
1719
AnTuTu Benchmark 8
271175
Redmi K30 +2%
277062
AnTuTu 8 Android Ranking List (229th and 227th place)

Software

Operating system Android 10.0 Android 10
ROM MIUI 12 MIUI 12
OS size 18 GB -

Battery

Specifications
Capacity 5020 mAh 4500 mAh
Charge power 18 W 27 W
Battery type Li-Po Li-Po
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes (50% in 50 min) Yes (100% in 70 min)
Full charging time 2:30 hr 1:10 hr

Battery life tests

Web browsing (Wi-Fi)
19:12 hr
14:14 hr
Watching videos (Player)
16:30 hr
12:19 hr
Talk (3G)
41:30 hr
Redmi K30 +7%
44:27 hr
Smartphone Battery Life Ranking (16th and 75th place)

Camera

Specs and camera test of smartphones
Main camera
Matrix 48 megapixels 64 megapixels
Image resolution 8000 x 6000 9000 x 7000
Zoom Digital Digital
Flash LED Dual LED
Stabilization Digital Optical
8K video recording No No
4K video recording Up to 30FPS Up to 30FPS
1080p video recording Up to 60FPS Up to 120FPS
Slow motion 960 FPS (1080p) 960 FPS (720p)
Angle of widest lens 119° 120°
Lenses 4 (48 MP + 8 MP + 5 MP + 2 MP) 4 (64 MP + 8 MP + 2 MP + 2 MP)
Wide (main) lens - 48 MP
- Aperture: f/1.8
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2", Samsung S5KGM2 (ISOCELL CMOS)
- Phase autofocus
- 64 MP
- Aperture: f/1.9
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/1.7", Sony IMX686 (Exmor-RS CMOS)
- Phase autofocus
- Optical stabilization
Ultra-wide lens - 8 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
- Sensor: 1/4.0", Omnivision OV8856
- 8 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
- Sensor: 1/4", OmniVision OV8856 (CMOS)
Macro lens - 5 MP
- Aperture: f/2.4
- Pixel size: 1.12 micron
- 2 MP
- Aperture: f/2.4
- Focal length: 1.94 mm
- Pixel size: 1.75 micron
- Sensor: 1/5", GalaxyCore GC02M1 (CMOS)
Depth lens - 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- Sensor: 1/5", GalaxyCore GC02M1 (CMOS)
Camera features - Bokeh mode
- Pro mode
- Bokeh mode
- Pro mode
Selfie camera
Megapixels 16 megapixels 20 megapixels
Image resolution 4920 x 3264 5963 x 3354
Aperture f/2.5 f/2.2
Focal length - 27 mm
Pixel size 1 microns 0.8 microns
Sensor type CMOS ISOCELL CMOS
Sensor size 1/3.06" 1/3.4"
Video resolution 1080p (Full HD) при 30 FPS 1080p (Full HD) при 30 FPS

Connectivity

Wi-Fi standard Wi-Fi 5 (802.11 b/g/n/ac) Wi-Fi 5 (802.11 b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
- Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5
Bluetooth features LE, HID, A2DP LE, A2DP
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB-Storage mode
- OTG
- Charging
- USB-Storage mode
- OTG
GPS GPS, GLONASS, Beidou, Galileo, NAVIC GPS, GLONASS, Beidou, Galileo
NFC* No Yes
Infrared port Yes Yes
Network
Number of SIM* 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* No No
Hybrid slot No Yes
LTE Cat* 12 15
5G support No Yes

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio Yes Yes
Dolby Atmos No No
Speakers test
Max. loudness

Other

Category Mid-range Mid-range
Announced March 2020 December 2019
Release date April 2020 February 2020
Launch price ~ 225 USD ~ 287 USD
SAR (head) 0.72 W/kg 0.47 W/kg
SAR (body) 0.98 W/kg 1.16 W/kg
Sensors - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

If the display and camera are more important to you, then choose the Xiaomi Redmi K30. But if the battery life is more of a priority – go for the Xiaomi Redmi Note 9S.

Cast your vote

So, which phone would you choose?
16 (57.1%)
12 (42.9%)
Total votes: 28

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