Xiaomi Redmi 9 vs Vivo Y21d
Short Description
Xiaomi Redmi 9
Screen size: 6.53" / Resolution: 1080 x 2340 px / Main camera: 13 MP & 8 MP & 5 MP & 2 MP / Front camera: 8MP / RAM: 3GB, 4GB, 6GB / Battery power: 5020 mAh / Internal storage: 32GB, 64GB, 128GB / SIM cards: 2 SIM
Vivo Y21d
Screen size: 6.68" / Resolution: 720 x 1608 px / Main camera: 50 MP / Front camera: 5MP / RAM: 4GB, 6GB, 8GB / Battery power: 6500 mAh / Internal storage: 128GB, 256GB / SIM cards: 2 SIM
Key Differences
Xiaomi Redmi 9
Vivo Y21d
How is Xiaomi Redmi 9 better than Vivo Y21d?
Faster CPU speed: 2 x 2 GHz & 6 x 1.8 GHz vs 2 x 1.8 GHz & 6 x 1.8 GHz
More megapixels front camera: 8MP vs 5MP
Better display resolution: 1080 x 2340 px vs 720 x 1608 px
Lighter: 198 g (6.98 ounces) vs 209 g (7.37 ounces)
Shorter: 163.32 mm (6.43 inches) vs 166.1 mm (6.54 inches)
More color options: Carbon Gray, Sunset Purple, Ocean Green, Pink/Blue vs Lavender Purple, Black
Xiaomi Redmi 9
Vivo Y21d
How is Vivo Y21d better than Xiaomi Redmi 9?
Bigger battery capacity: 6500 mAh vs 5020 mAh
More RAM memory capacity in max option: 4GB, 6GB, 8GB vs 3GB, 4GB, 6GB
More internal storage in max option: 128GB, 256GB vs 32GB, 64GB, 128GB
More megapixels main camera: 50 MP vs 13 MP & 8 MP & 5 MP & 2 MP
Has a larger display diagonal: 6.68" vs 6.53"
Higher charging speed: 44W vs 18W
Narrower: 77 mm (3.03 inches) vs 77.01 mm (3.03 inches)
The phone is 5 years and 4 months newer
Size Comparison
Xiaomi Redmi 9
Vivo Y21d
Height
163.32 mm
(6.43 inches)
Width
77.01 mm
(3.03 inches)
Thickness
9.1 mm
(0.36 inches)
Screen size
6.53"
Weight
198 g
(6.98 ounces)
6.53"
6.68"
Height
166.1 mm
(6.54 inches)
Width
77 mm
(3.03 inches)
Thickness
8.4 mm
(0.33 inches)
Screen size
6.68"
Weight
209 g
(7.37 ounces)
Height
163.32 mm
(6.43 inches)
Width
77.01 mm
(3.03 inches)
Thickness
9.1 mm
(0.36 inches)
Screen size
6.53"
Weight
198 g
(6.98 ounces)
Height
166.1 mm
(6.54 inches)
Width
77 mm
(3.03 inches)
Thickness
8.4 mm
(0.33 inches)
Screen size
6.68"
Weight
209 g
(7.37 ounces)
Vote for Your option
Xiaomi Redmi 9
Vote for Your option
Vivo Y21d
Technical Specifications
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Specs
Xiaomi Redmi 9
Vivo Y21d
Design
Weight
198 g (6.98 ounces)
209 g (7.37 ounces)
Thickness
9.1 mm (0.36 inches)
8.4 mm (0.33 inches)
Width
77.01 mm (3.03 inches)
77 mm (3.03 inches)
Height
163.32 mm (6.43 inches)
166.1 mm (6.54 inches)
Ingress Protection (IP) rating
-
IP68
Waterproof depth rating
-
6 m
Volume
114.45 cm³
107.43 cm³
Color options
Carbon Gray, Sunset Purple, Ocean Green, Pink/Blue
Lavender Purple, Black
French Repairability Index
7.1
-
Water resistance
-
Waterproof
Display
Screen size
6.53"
6.68"
Display type
IPS, LCD
LCD, IPS
Pixel density
395 ppi
264 ppi
Resolution
1080 x 2340 px
720 x 1608 px
Refresh rate
60Hz
90Hz
Brightness (typical)
400 nits
-
Has branded damage-resistant glass
✔
✔
Gorilla Glass version
Gorilla Glass 3
-
Contrast ratio
1500:1
-
Has a touch screen
✔
✔
Performance
Internal storage
32GB, 64GB, 128GB
128GB, 256GB
RAM
3GB, 4GB, 6GB
4GB, 6GB, 8GB
Android version
Android 10
Android 15
CPU speed
2 x 2 GHz & 6 x 1.8 GHz
2 x 1.8 GHz & 6 x 1.8 GHz
Has integrated LTE
✔
✔
RAM speed
1800 MHz
-
Semiconductor size
12 nm
-
Supports 64-bit
✔
-
DirectX version
DirectX 12
-
Has integrated graphics
✔
-
OpenGL version
3.2
-
OpenGL ES version
3.2
-
Uses big.LITTLE technology
✔
-
CPU threads
8 threads
-
Has TrustZone
✔
-
Maximum memory bandwidth
13.41 GB/s
12.8 GB/s
OpenCL version
2
-
L2 cache
0.3 MB
-
EMMC version
5.1
-
DDR memory version
4
-
Maximum memory amount
8GB
-
L3 cache
1 MB
-
GPU execution units
2
-
Thermal Design Power (TDP)
5W
-
Shading units
32
-
Release date
-
2026
Memory channels
2
-
Number of transistors
5500 million
-
Has an external memory slot
✔
✔
GPU turbo
950 MHz
614.4 MHz
Turbo clock speed
2GHz
-
Maximum amount of external memory supported
512GB
-
Cameras
Main camera
13 MP & 8 MP & 5 MP & 2 MP
50 MP
Front camera
8MP
5MP
Video recording (main camera)
1080 x 30 fps
1080 x 30 fps
Wide aperture (main camera)
f/2.2 & f/2.2 & f/2.4 & f/2.4
f/1.8
Has a BSI sensor
✔
-
Has continuous autofocus when recording movies
-
✔
Has phase-detection autofocus for photos
✔
✔
Supports slow-motion video recording
✔
✔
Has a built-in HDR mode
✔
-
Has a flash
✔
✔
Has manual exposure
-
✔
Has a dual-lens (or multi-lens) main camera
✔
-
Optical zoom
0x
0x
Number of flash LEDs
1
1
Has a CMOS sensor
✔
✔
Has manual ISO
✔
✔
Has a serial shot mode
✔
✔
Has manual focus
✔
✔
Has a front camera
✔
✔
Has manual white balance
✔
✔
Has touch autofocus
✔
✔
Can create panoramas in-camera
✔
✔
Wide aperture (front camera)
f/2.0
f/2.2
Has timelapse function
✔
✔
Operating system
Has clipboard warnings
-
✔
Has location privacy options
-
✔
Has camera/microphone privacy options
-
✔
Has theme customization
✔
✔
Can play games while they download
-
✔
Has dark mode
✔
✔
Has battery health check
-
✔
Has an extra dim mode
-
✔
Has focus modes
✔
-
Has dynamic theming
-
✔
Can offload apps
-
✔
Has customizable notifications
✔
✔
Supports split screen
✔
✔
Supports instant markup
✔
-
Supports PiP and PaP
✔
-
Has sharing intents
✔
✔
Has a child lock
✔
✔
Supports widgets
-
✔
Is free and open source
✔
✔
Tracks the current position of a mobile device
✔
✔
Is a multi-user system
✔
✔
Can block app tracking
-
✔
Has on-device machine learning
-
✔
Has Live Text
-
✔
Supports widgets
✔
-
More languages supported
125
-
Has offline voice recognition
✔
✔
The browser has word wrap
✔
-
Has voice commands
✔
✔
Has notification permissions
-
✔
Has media picker
-
✔
Has full-page screenshots
-
✔
Has PiP
-
✔
Battery
Battery power
5020 mAh
6500 mAh
Supports fast charging
✔
✔
Charging speed
18W
44W
Has a battery level indicator
✔
✔
Has a rechargeable battery
✔
✔
Comes with a charger
-
✔
Audio
Has stereo speakers
-
✔
Number of microphones
2
-
Has a socket for a 3.5 mm audio jack
✔
-
Has a radio
✔
-
Features
Wi-Fi version
Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)
Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Download speed
300 MBits/s
300 MBits/s
Upload speed
100 MBits/s
100 MBits/s
Has USB Type-C
✔
✔
USB version
2
2
Has NFC
✔
-
SIM cards
2 SIM
2 SIM
Has a fingerprint scanner
✔
✔
Bluetooth version
5
5.2
Has a gyroscope
✔
-
Has GPS
✔
✔
Has a compass
✔
✔
Supports Wi-Fi
✔
✔
Has a cellular module
✔
✔
Supports Galileo
-
✔
Has an infrared sensor
✔
-
Has an accelerometer
✔
✔
Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
Vote for Your option
Xiaomi Redmi 9
Vote for Your option
Vivo Y21d
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