Home > Smartphone comparison > Redmi Note 9S vs Redmi Note 7 – which one to choose?

Xiaomi Redmi Note 9S vs Note 7

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 Note 7, which is powered by Qualcomm Snapdragon 660 and came out 14 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
  • Comes with 1020 mAh larger battery capacity: 5020 vs 4000 mAh
  • 61% better performance in AnTuTu Benchmark (270K versus 167K)
  • Shows 18% longer battery life (127 vs 108 hours)
  • Has a 0.37 inch larger screen size
  • Slow-motion recording at 960FPS
  • Ability to record video in 4K resolution
  • More energy-efficient CPU – Snapdragon 720G
  • Delivers 20% higher maximum brightness (565 against 471 nits)
  • Has an ultra-wide angle camera lens
  • The phone is 1-year and 2-months newer
Reasons to consider the Xiaomi Redmi Note 7
  • Weighs 24 grams less

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 6.3 inches
Resolution 1080 x 2400 pixels 1080 x 2340 pixels
Aspect ratio 20:9 19.5:9
PPI 395 ppi 409 ppi
Refresh rate 60 Hz 60 Hz
HDR support Yes, HDR10 No
Screen protection Corning Gorilla Glass 5 Corning Gorilla Glass 5
Screen-to-body ratio 84.5% 81.4%
Display tests
RGB color space 114.9% 99.3%
PWM Not detected 2336 Hz
Response time 34 ms 43.2 ms
Contrast 1111:1 1639:1
Max. Brightness
565 nits
471 nits
Sources: NotebookCheck [1], [2]

Design and build

Height 166 mm (6.54 inches) 159.2 mm (6.27 inches)
Width 77 mm (3.03 inches) 75.2 mm (2.96 inches)
Thickness 8.8 mm (0.35 inches) 8.1 mm (0.32 inches)
Weight 210 gramm (7.41 oz) 186 gramm (6.56 oz)
Waterproof No No
Rear material Glass Glass
Frame material Plastic Plastic
Colors White, Black, Blue Black, Blue
Fingerprint scanner Yes, in home button Yes, rear
Screen-to-body ratio
84.5%
81.4%

Performance

Tests of Xiaomi Redmi Note 9S and Xiaomi Redmi Note 7 in the benchmarks
SoC
Chipset Qualcomm Snapdragon 720G Qualcomm Snapdragon 660
Max. clock 2300 MHz 2200 MHz
CPU cores 8 (2 + 6) 8 (4 + 4)
Architecture - 6 cores at 1.8 GHz: Kryo 465 Silver (Cortex-A55)
- 2 cores at 2.3 GHz: Kryo 465 Gold (Cortex-A76)
- 4 cores at 1.84 GHz: Kryo 260 Silver (Cortex-A53)
- 4 cores at 2.2 GHz: Kryo 260 Gold (Cortex-A73)
L3 cache 1 MB -
Lithography process 8 nanometers 14 nanometers
Graphics Adreno 618 Adreno 512
GPU clock 750 MHz 850 MHz
FLOPS ~435 GFLOPS ~217 GFLOPS
Memory
RAM size 4 GB 3, 4 GB
Memory type LPDDR4X LPDDR4X
Memory clock 2133 MHz 1866 MHz
Channels 2 2
Storage
Storage size 64 GB 32, 64, 128 GB
Storage type UFS 2.1 eMMC 5.1
Memory card MicroSD MicroSD
Memory card max. size Up to 512 GB Up to 256 GB

Benchmarks

Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
1735
AnTuTu Benchmark 7
AnTuTu Benchmark 8
270698
167996

Software

Operating system Android 10.0 Android 9 (Can be upgraded to Android 10)
ROM MIUI 12 MIUI 12
OS size 18 GB 13 GB

Battery

Specifications
Capacity 5020 mAh 4000 mAh
Charge power 18 W 18 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, Quick Charge 4 (60% in 50 min)
Full charging time 2:30 hr 1:50 hr

Battery life tests

Web browsing (Wi-Fi)
19:12 hr
14:04 hr
Watching videos (Player)
16:30 hr
14:12 hr
Talk (3G)
41:30 hr
32:35 hr
Smartphones With Long Battery Life (19th and 123rd place)

Camera

Specs and camera test of smartphones
Main camera
Matrix 48 megapixels 48 megapixels
Image resolution 8000 x 6000 8000 x 6000
Zoom Digital Digital
Flash LED Dual LED
Stabilization Digital Digital
8K video recording No No
4K video recording Up to 30FPS No
1080p video recording Up to 60FPS Up to 120FPS
Slow motion 960 FPS (1080p) 120 FPS (1080p)
Angle of widest lens 119° -
Lenses 4 (48 MP + 8 MP + 5 MP + 2 MP) 2 (48 MP + 5 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
- 48 MP
- Aperture: f/1.8
- Pixel size: 0.8 micron
- Sensor: 1/2", Samsung S5KGM1 (ISOCELL CMOS)
- Phase autofocus
Ultra-wide lens - 8 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
- Sensor: 1/4.0", Omnivision OV8856
-
Macro lens - 5 MP
- Aperture: f/2.4
- Pixel size: 1.12 micron
-
Depth lens - 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- 5 MP
- Aperture: f/2.0
- Pixel size: 1.12 micron
- Sensor: 1/5.0", Samsung S5K5E8 (ISOCELL CMOS)
Camera features - Bokeh mode
- Pro mode
- Bokeh mode
- Pro mode
- RAW support
Selfie camera
Megapixels 16 megapixels 13 megapixels
Image resolution 4920 x 3264 4160 x 3120
Aperture f/2.5 f/2.2
Pixel size 1 microns 1.12 microns
Sensor type CMOS CMOS
Sensor size 1/3.06" 1/3.1"
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 a/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 No
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 13
5G support No -

Sound

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

Other

Category Mid-range Mid-range
Announced March 2020 January 2019
Release date April 2020 January 2019
Launch price ~ 225 USD ~ 175 USD
SAR (head) 0.72 W/kg 0.59 W/kg
SAR (body) 0.98 W/kg 1.27 W/kg
Sensors - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- 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

After analyzing all the data, we think that the Xiaomi Redmi Note 9S is definitely a better buy.

Cast your vote

So, which phone would you choose?
114 (74%)
40 (26%)
Total votes: 154

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