Xiaomi Redmi Note 8 vs Redmi 9

Here we compared two smartphones: the 6.3-inch Xiaomi Redmi Note 8 (with Qualcomm Snapdragon 665) that was released on August 29, 2019, against the Xiaomi Redmi 9, which is powered by MediaTek Helio G80 and came out 9 months after. 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 8
  • Delivers 48% higher maximum brightness (632 against 426 nits)
  • Ability to record video in 4K resolution
  • Slow-motion recording at 240FPS
Reasons to consider the Xiaomi Redmi 9
  • Comes with 1020 mAh larger battery capacity: 5020 vs 4000 mAh
  • Shows 21% longer battery life (131 vs 108 hours)
  • 14% better performance in AnTuTu Benchmark (224K versus 196K)
  • 14% faster in single-core GeekBench 5 test: 361 and 318 points
  • The phone is 9-months newer

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
Phone:
vs

Display

Type IPS LCD IPS LCD
Size 6.3 inches 6.53 inches
Resolution 1080 x 2340 pixels 1080 x 2340 pixels
Aspect ratio 19.5:9 19.5:9
PPI 409 ppi 395 ppi
Refresh rate 60 Hz 60 Hz
HDR support No No
Screen protection Corning Gorilla Glass 5 Corning Gorilla Glass 3
Screen-to-body ratio 81.7% 83.2%
Display tests
RGB color space - 93%
PWM - 500 Hz
Response time - 35 ms
Contrast - 710:1
Max. Brightness
632 nits
426 nits
Sources: NotebookCheck [1]

Design and build

Height 158.3 mm (6.23 inches) 163.3 mm (6.43 inches)
Width 75.3 mm (2.96 inches) 77 mm (3.03 inches)
Thickness 8.4 mm (0.33 inches) 9.1 mm (0.36 inches)
Weight 190 gramm (6.7 oz) 198 gramm (6.98 oz)
Waterproof No No
Rear material Glass Plastic
Frame material Plastic Plastic
Colors White, Black, Blue Gray, Green, Purple
Fingerprint scanner Yes, rear Yes, rear
Screen-to-body ratio
81.7%
Redmi 9 +2%
83.2%

Performance

Tests of Xiaomi Redmi Note 8 and Xiaomi Redmi 9 in the benchmarks
SoC
Chipset Qualcomm Snapdragon 665 MediaTek Helio G80
Max. clock 2000 MHz 2000 MHz
CPU cores 8 (4 + 4) 8 (2 + 6)
Architecture - 4 cores at 1.8 GHz: Kryo 260 Silver (Cortex-A53)
- 4 cores at 2 GHz: Kryo 260 Gold (Cortex-A73)
- 6 cores at 1.8 GHz: Cortex-A55
- 2 cores at 2 GHz: Cortex-A75
Lithography process 11 nanometers 12 nanometers
Graphics Adreno 610 Mali-G52 MP2
GPU clock 600 MHz 950 MHz
FLOPS ~273 GFLOPS ~54.6 GFLOPS
Memory
RAM size 3, 4, 6 GB 3, 4 GB
Memory type LPDDR4X LPDDR4X
Memory clock 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage size 64, 128 GB 32, 64 GB
Storage type eMMC 5.1 eMMC 5.1
Memory card MicroSD MicroSD
Memory card max. size Up to 256 GB Up to 512 GB

Benchmarks

Geekbench 5 (Single-Core)
Redmi 9 +14%
361
Geekbench 5 (Multi-Core)
1326
AnTuTu Benchmark 9
196478
Redmi 9 +14%
224371

Software

Operating system Android 9.0 (Can be upgraded to Android 11) Android 10 (Can be upgraded to Android 11)
ROM MIUI 12.5 Enhanced MIUI 12.5 Enhanced Edition
OS size - 13 GB

Battery

Specifications
Capacity 4000 mAh 5020 mAh
Charge power 18 W 18 W
Battery type Li-Ion Li-Po
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes, Quick Charge 4.0 (50% in 35 min) Yes (50% in 80 min)
Full charging time 2:05 hr 3:05 hr

Battery life tests

Web browsing (Wi-Fi)
16:00 hr
Redmi 9 +3%
16:49 hr
Watching videos (Player)
14:24 hr
Redmi 9 +8%
15:36 hr
Talk (3G)
25:01 hr
Redmi 9 +24%
31:05 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 48 megapixels 13 megapixels
Image resolution 8000 x 6000 4128 x 3096
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K video recording No No
4K video recording Up to 30FPS No
1080p video recording Up to 60FPS Up to 30FPS
Slow motion 240 FPS (720p) 120 FPS (720p)
Angle of widest lens 118° 118°
Lenses 4 (48 MP + 8 MP + 2 MP + 2 MP) 4 (13 MP + 8 MP + 5 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
- 13 MP
- Aperture: f/2.2
- Focal length: 28 mm
- Pixel size: 1.12 micron
- Sensor: 1/3.1" (CMOS)
- Phase autofocus
Ultra-wide lens - 8 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
- Sensor: 1/5", Omnivision OV8856
- 8 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
- Sensor: 1/4.0", OmniVision OV8856
Macro lens - 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- Sensor: 1/5", Omnivision OV02A10 (CMOS)
- 5 MP
- Aperture: f/2.4
- Pixel size: 1.12 micron
Depth lens - 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- Sensor: 1/5", Omnivision OV02A10 (CMOS)
- 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 13 megapixels 8 megapixels
Image resolution 4224 x 3136 3264 x 2448
Aperture f/2.0 f/2.0
Focal length 28.21 mm 27 mm
Pixel size 1.12 microns -
Sensor type - CMOS
Sensor size 1/2.9" -
Video resolution 1080p (Full HD) at 30 FPS 1080p (Full HD) at 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
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5
Bluetooth features LE, HID, A2DP LE, HID, 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 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 No
LTE Cat* 12 7
5G support No No

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio Yes Yes
Dolby Atmos No No
Speakers test
Max. loudness
81.3 dB
Redmi 9 +3%
83.7 dB

Other

Category Mid-range Budget
Announced August 2019 June 2020
Release date September 2019 July 2020
Launch price ~ 187 USD ~ 150 USD
SAR (head) 0.191 W/kg 0.71 W/kg
SAR (body) 1.034 W/kg 1.06 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

If the camera and design are more important to you, then choose the Xiaomi Redmi Note 8. But if the performance and battery life are more of a priority – go for the Xiaomi Redmi 9.

Cast your vote

So, which phone would you choose?
604 (49.9%)
606 (50.1%)
Total votes: 1210

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