Xiaomi Redmi Note 4 vs OnePlus 9 Specs Comparison

Availability

Officially announced
Jan 19, 2017	Mar 23, 2021
Prices (MSRP)
$190	$729

Design

Dimensions
5.94 x 2.99 x 0.33 inches 151 x 76 x 8.45 mm	6.30 x 2.92 x 0.34 inches 160 x 74.2 x 8.7 mm
Weight
5.82 oz / 165.0 g	6.77 oz / 192.0 g
Materials
Back: Aluminum	Back: Glass (Corning Gorilla Glass) Frame: Aluminum
Biometrics
Fingerprint (touch)	2D Face unlock, Optical in-screen fingerprint
Features
Touch sensitive control keys, Soft keys
Keys
Right: Volume control, Lock/Unlock key	Left: Volume control; Right: Lock/Unlock key, Other
Colors
Black, Gold, Gray, Blue, White	Winter Mist, Arctic Sky, Astral Black

Display

Size
5.5-inch, 72.78% screen-to-body	6.5-inch, 87.27% screen-to-body
Type
IPS LCD, 450 nits	AMOLED, 120Hz, HDR
Resolution
1920x1080px, 401 PPI	2400x1080px, 20:9 ratio, 402 PPI
Colors
16 777 216
Protection
	Corning Gorilla Glass

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
Untested	2.5 (Average)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 625 8953	Snapdragon 888 (5 nm)
Processor
Octa-core 2000 MHz ARM Cortex-A53	Octa-core 2840 MHz Kryo 680
GPU
Adreno 506	Adreno 660
Memory
4GB (LPDDR3)/64GB 2GB/32GB 3GB/32GB	8GB (LPDDR5)/128GB (UFS 3.1) 12GB/256GB
Storage expansion
microSDXC up to 128 GB	not expandable
OS
Android (7.0 Nougat, 6.0 Marshmallow)	Android (11)

Battery

Type
4100 mAh, Li - Polymer	4500 mAh
Charging
	OnePlus Warp Charge Qi wireless charging
Charge speed
	Wired: 65.0W Wireless: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

5h 50min

Browsing

11h 29min

Video

9h 16min

Gaming

9h 6min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Single camera	Triple camera
Main camera
13 MP (CMOS image sensor, BSI sensor, PDAF) Aperture size: F2.0 Pixel size: 1.12 μm	48 MP (PDAF) Aperture size: F1.8 Focal length: 23 mm Sensor size: 1/1.4" Pixel size: 1.12 μm
Second camera
	50 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 14 mm Sensor size: 1/1.56"
Third camera
	2 MP (Black and White)
Flash
Dual LED	Dual LED
Video recording
1080p (30 fps), 720p (120 fps) Video calling, Video sharing	8K UHD (30 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (480 fps) HDR, Continuous autofocus, EIS
Front
5 MP Video capture: 1080p	16 MP (EIS)

Connectivity & Features

Bluetooth
4.1	5.2
WLAN
a,b,g,n,dual-band Hotspot, Wi-Fi Direct 802.11 a, b, g, n	a,b,g,n,ac,Wi-Fi 6,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax
USB
microUSB, USB 2.0	Type-C, USB 3.1
Sensors
Accelerometer, Gyroscope, Hall (for flip covers), Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Location
GPS, A-GPS, Glonass, BeiDou	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
Infrared, Tethering, Computer sync, OTA sync	NFC

Multimedia

Headphones
3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker, Multiple speakers
Features
Album art cover, Background playback	Dolby Atmos
Screen mirroring
Wireless screen share	Wireless screen share
Additional microphone(s)
	Noise cancellation

Cellular

5G Bands
	n1, n2, n3, n5, n7, n8, n20, n25, n28, n38, n40, n41, n48, n66, n71, n77, n78
4G (FDD) Bands
3, 5	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 66, 71
4G (TDD) Bands
40	38, 39, 40, 41, 46, 48
3G Bands
5, 8, 2, 1	1, 2, 4, 5, 8, 9, 19
Data Speed
LTE-A, HSPA	LTE-A Pro Cat 20 (2000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
Dual SIM
Yes
SIM type
Nano SIM, Micro SIM	Nano SIM
VoLTE
Yes

Phone Features

Notifications
Haptic feedback
Other features
Voice dialing, Voice commands, Voice recording

Regulatory Approval

FCC approval
	Date approved: Mar 24, 2021 FCC ID value: 2ABZ2-EF136
Measured SAR
	Head: 1.20 W/kg Body: 0.78 W/kg Simultaneous Transmission: 1.48 W/kg Wireless Router: 1.18 W/kg

Alternative variants

Memory	2GB/32GB
Prices (MSRP)	$146

With 12GB RAM and 256GB storage

Memory	12GB/256GB
Prices (MSRP)	$829

Memory	3GB/32GB
Prices (MSRP)	$161

Links

Full specifications
Xiaomi Redmi Note 4 Specs	OnePlus 9 Specs
PhoneArena Review
	OnePlus 9 Review
User Reviews
Xiaomi Redmi Note 4 User Reviews	OnePlus 9 User Reviews