Xiaomi Redmi Note 4X vs Xiaomi Redmi Note 9S

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Display

Size

5.5 inches
6.7 inches

Resolution

1920 x 1080 pixels,
401 PPI
2400 x 1080 pixels, 20:9 ratio,
395 PPI

Technology

IPS LCD
IPS LCD

Screen-to-body

72.78 %
84.42 %

Features

Ambient light sensor, Proximity sensor
HDR video support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip

Qualcomm Snapdragon 625 8953
Qualcomm Snapdragon 720G SM7125

Processor

Octa-core, 2000 MHz, ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 2300 MHz, Kryo 465, 64-bit, 8 nm

GPU

Adreno 506
Adreno 618

RAM

3GB DDR3
4GB LPDDR4

Internal storage

32GB
64GB

Storage expansion

microSDXC up to 128 GB
microSDXC up to 512 GB

OS

Android (6.0 Marshmallow)
Android (10)

Battery

Capacity

4100 mAh
5020 mAh

Type

Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable

Charging

 
Fast charging

Camera

Rear

Single camera
Quad camera

Main camera

13 MP (CMOS image sensor, PDAF)
48 MP (PDAF)

Specifications

Aperture size: F2.0
Aperture size: F1.8; Sensor size: 1/2"; Pixel size: 0.8 μm

Second camera

 
8 MP (Ultra-wide)

Specifications

 
Aperture size: F2.2; Pixel size: 1.12 μm

Third camera

 
5 MP (Macro, Autofocus)

Specifications

 
Aperture size: F2.4; Pixel size: 1.12 μm

Fourth camera

 
2 MP (Depth information)

Specifications

 
Aperture size: F2.4; Pixel size: 1.75 μm

Video recording

1920x1080 (Full HD) (30 fps), 1280x720 (HD) (120 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (960 fps)

Features

Video calling, Video sharing
 

Front

5 MP
16 MP (HDR, Slow-motion videos)

Design

Dimensions

5.94 x 2.99 x 0.33 inches (151 x 76 x 8.45 mm)
6.53 x 3.02 x 0.35 inches (165.75 x 76.68 x 8.8 mm)

Weight

5.82 oz
7.37 oz

165.0 g
209.0 g

Materials

Back: Metal
Back: Glass (Corning Gorilla Glass 5)

Biometrics

Fingerprint (touch)
Fingerprint (touch)

Features

Touch sensitive control keys
 

Colors

Black, Gold, Gray, Pink, Green
Interstellar grey, Aurora blue, Glacier white

Cellular

LTE (FDD)

Bands 1(2100), 3(1800), 5(850), 7(2600)
 

LTE (TDD)

Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
Bands 38(2600), 40(2300)

UMTS

850, 900, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz

Data Speed

LTE-A Cat 6 (300/50 Mbit/s), HSPA
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

Yes
Yes

SIM type

Nano SIM, Micro SIM
Nano SIM

HD Voice

Yes
 

VoLTE

Yes
Yes

Multimedia

Headphones

3.5mm jack
3.5mm jack

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features

Album art cover, Background playback
 

Screen mirroring

Wireless screen share
Wireless screen share

Additional microphone(s)

for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth

4.2
5.0

Wi-Fi

802.11 a, b, g, n, dual-band; Hotspot, Wi-Fi Direct
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot

USB

microUSB, USB 2.0
Type-C (reversible)

Features

Mass storage device, Charging
Charging

Location

GPS, A-GPS, Glonass, BeiDou
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning

Sensors

Accelerometer, Gyroscope, Hall (for flip covers)
Accelerometer, Gyroscope, Compass

Other

Infrared, VoIP, Tethering, Computer sync, OTA sync
Infrared

Phone features

Notifications

Haptic feedback
 

Other features

Voice dialing, Voice commands, Voice recording
 

Buyers information

In The Box

 
22.5W Wire charger, Simple protective cover, USB Type-C cable, SIM eject tool, User guide, Warranty card

Price

$ 145
$ 249
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