Xiaomi Redmi Note 4X vs Xiaomi Mi 9 Specs Comparison

Availability

Officially announced
Feb 08, 2017	Feb 20, 2019
Prices (MSRP)
$145

Design

Dimensions
5.94 x 2.99 x 0.33 inches 151 x 76 x 8.45 mm	6.20 x 2.94 x 0.30 inches 157.5 x 74.67 x 7.61 mm
Weight
5.82 oz (165.0 g)	6.10 oz (173.0 g)
Materials
Back: Metal	Back: Glass (Corning Gorilla Glass 5) Frame: Metal
Biometrics
Fingerprint (touch)	Optical in-screen fingerprint
Features
Touch sensitive control keys
Keys
Right: Volume control, Lock/Unlock key
Colors
Black, Gold, Gray, Pink, Green	Black, Purple, Blue

Display

Size
5.5-inch, 72.78% screen-to-body	6.4-inch, 85.23% screen-to-body
Type
IPS LCD	AMOLED, HDR, 600 nits
Resolution
1920x1080px, 401 PPI	2340x1080px, 19.5:9 ratio, 403 PPI
Colors
16 777 216
Protection
	Corning Gorilla Glass 6
Features
	HDR support, Oleophobic coating, Scratch-resistant glass, Ambient light sensor, Proximity sensor

Hardware

System chip
Snapdragon 625 8953 (14 nm)	Snapdragon 855 (7 nm)
Processor
Octa-core 2000 MHz ARM Cortex-A53	Octa-core 2840 MHz Kryo 485
GPU
Adreno 506	Adreno 640
Memory
3GB (DDR3)/32GB 3GB/16GB 4GB/64GB	6GB (LPDDR4)/128GB 6GB/64GB 12GB/256GB
Storage expansion
microSDXC up to 128 GB	not expandable
OS
Android (6.0 Marshmallow)	Android (9.0 Pie)

Battery

Type
4100 mAh, Li - Polymer	3300 mAh
Charging
	Qualcomm Quick Charge 4+ Qi wireless charging

Camera

Rear
Single camera	Triple camera
Main camera
13 MP (CMOS image sensor, PDAF) Aperture size: F2.0	48 MP (Sapphire crystal lens cover, Laser and PDAF, CMOS image sensor) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm
Second camera
	12 MP (Telephoto, Sapphire crystal lens cover, PDAF) Optical zoom: 2.0x Aperture size: F2.2 Focal Length: 50 mm Sensor size: 1/3.4" Pixel size: 1 μm
Third camera
	16 MP (Ultra-wide, Sapphire crystal lens cover, PDAF) Aperture size: F2.2 Focal Length: 17 mm Sensor size: 1/3" Pixel size: 1 μm
Flash
Dual LED	Dual LED
Video recording
1080p (30 fps), 720p (120 fps) Video calling, Video sharing	4K UHD (60 fps), 1080p (960 fps), 720p (960 fps) Continuous autofocus, EIS, Video calling, Video sharing
Front
5 MP	20 MP (HDR) Video capture: 1080p

Connectivity & Features

Bluetooth
4.2	5.0
WLAN
a,b,g,n,dual-band Hotspot, Wi-Fi Direct 802.11 a, b, g, n	a,b,g,n,ac,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac
USB
microUSB, USB 2.0	Type-C, USB 2.0
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
Other
Infrared, VoIP, Tethering, Computer sync, OTA sync	NFC, Infrared, VoIP, Tethering, Computer sync, OTA sync

Multimedia

Headphones
3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
Album art cover, Background playback	aptX-HD
Screen mirroring
Wireless screen share	Wireless screen share
Additional microphone(s)
Noise cancellation

Cellular

4G (FDD) Bands
1, 3, 5, 7	1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28
4G (TDD) Bands
38, 39, 40, 41	38, 39, 40
3G Bands
5, 8, 2, 1	5, 8, 4, 2, 1
Data Speed
LTE-A Cat 6 (300/50 Mbit/s), HSPA	LTE-A, HSPA, HSUPA
Dual SIM
Yes	Yes
SIM type
Nano SIM, Micro SIM	Nano SIM
HD Voice
Yes	Yes
VoLTE
Yes	Yes

Phone Features

Notifications
Haptic feedback	Haptic feedback, Music ringtones, Vibration
Other features
Voice dialing, Voice commands, Voice recording	Voice dialing, Voice commands, Voice recording

Alternative variants

Memory	16GB

with 64 GB storage

Memory	64GB

System chip	MediaTek Helio X20 MT6797 (20 nm)
Processor	Deca-core 2100 MHz ARM Cortex-A72 and ARM Cortex-A53
GPU	Mali-T880 MP4
Memory	4GB/64GB

Explorer Edition

Memory	12GB/256GB

Links

Full specifications
Xiaomi Redmi Note 4X Specs	Xiaomi Mi 9 Specs
PhoneArena Review
	Xiaomi Mi 9 Review