Samsung Galaxy A9 (2018) vs Xiaomi Redmi Note 7

$399.99 VIEW ON AMAZON
$179.73 VIEW ON AMAZON

Display

Display size

6.3 inches
6.3 inches

Resolution

1080 x 2220 pixels
1080 x 2340 pixels

Pixel density

392 ppi
409 ppi

Technology

Super AMOLED
IPS LCD

Screen-to-body ratio

80.51 %
81.37 %

Features

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

Camera

Rear

Quad camera
Dual camera

Main camera

24 megapixels
48 megapixels

Hardware Features

Phase detection autofocus
Phase detection autofocus, CMOS image sensor, Back-illuminated sensor (BSI)

Specifications

Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 0.9 μm
Aperture size: F1.8; Sensor size: 1/2"; Pixel size: 0.8 μm

Second camera

10 megapixels
5 megapixels

Hardware Features

Telephoto, Autofocus
Depth information

Specifications

Optical zoom: 2x; Aperture size: F2.4; Focal Length: 52 mm; Sensor size: 1/3.9"; Pixel size: 1 μm
Aperture size: F2.4

Third camera

8 megapixels
 

Hardware Features

Ultra-wide
 

Specifications

Aperture size: F2.4; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
 

Fourth camera

5 megapixels
 

Hardware Features

Depth information
 

Specifications

Aperture size: F2.2; Focal Length: 24 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
 

Flash

LED
Dual LED

Video recording

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

Features

Hyperlapse, Continuous autofocus, Digital image stabilization, Video calling, Video sharing
Continuous autofocus, Digital image stabilization, Video calling, Video sharing

Front

24 megapixels
13 megapixels

Features

 
High Dynamic Range mode (HDR)

Design

Dimensions

6.40 x 3.03 x 0.31 inches (162.5 x 77 x 7.8 mm)
6.27 x 2.96 x 0.32 inches (159.21 x 75.21 x 8.1 mm)

Weight

6.46 oz (183 g)
the average is 6 oz (172 g)
6.56 oz (186 g)
the average is 6 oz (172 g)

Materials

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

Biometrics

2D Face unlock, Fingerprint (touch)
2D Face unlock, Fingerprint (touch)

Colors

Black, Pink, Blue
Black, Blue, Red

Multimedia

Headphones

3.5 mm jack
3.5 mm jack

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features

Album art cover, Background playback
Album art cover, Background playback

Screen mirroring

Wireless screen share
Wireless screen share

Radio

FM
 

Additional microphone(s)

 
for Noise cancellation

Hardware & Performance

System chip

Qualcomm Snapdragon 660 SDM660
Qualcomm Snapdragon 660 SDM660

Processor

Octa-core, 2200 MHz, Kryo 260, 64-bit, 14 nm
Octa-core, 2200 MHz, Kryo 260, 64-bit, 14 nm

GPU

Adreno 512
Adreno 512

RAM

6 GB
4 GB

Internal storage

128 GB
128 GB

Available to use

108.9 GB
 

Storage expansion

microSDXC up to 512 GB
microSDXC up to 256 GB

OS

Android (8.0 Oreo), Samsung Experience UI
Android (9.0 Pie)

Connectivity & Features

Bluetooth

5.0
5.0

Wi-Fi

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

USB

USB Type-C (reversible), USB 2.0
USB Type-C (reversible)

Features

Mass storage device
Mass storage device

Location

GPS, A-GPS, Glonass, Galileo, BeiDou
GPS, A-GPS, Glonass, Galileo, BeiDou

Sensors

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

Mobile Payment

Samsung Pay
 

Other

NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync
Infrared, VoIP, Tethering, Computer sync, OTA sync

Cellular

LTE (FDD)

Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66
Bands 2, 3, 4, 5, 7, 8, 20

LTE (TDD)

Bands 38, 40, 41
Bands 38, 40

UMTS

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

Data

LTE-A Cat 9 (450/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA, UMTS
LTE-A Cat 9 (450/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

 
Yes

SIM type

Nano SIM
Nano SIM

Battery

Capacity

3800 mAh
4000 mAh

Type

Li - Polymer, Not user replaceable
Not user replaceable

Charging

Samsung Adaptive Fast Charging
Qualcomm Quick Charge 4

Talk time

 
23.00 hours
the average is 21 h (1288 min)

Stand-by time

 
10.5 days (251 hours)
the average is 19 days (457 h)

Talk time (3G)

23.00 hours
the average is 23 h (1362 min)
 

Internet use

3G: 13 hours; LTE: 15 hours; Wi-Fi: 15 hours
 

Music playback

112.00 hours
 

Video playback

19.00 hours
13.00 hours

Phone features

Notifications

Haptic feedback, Music ringtones, Vibration
Haptic feedback, Music ringtones, Vibration

Other features

Voice dialing, Voice commands, Voice recording
Voice dialing, Voice commands, Voice recording

Regulatory Approval

FCC approval

 
 

Date approved

Oct 18, 2018
 

FCC ID value: A3LSMA920F link
 

FCC measured SAR

 
 

Head

0.24 W/kg
 

Body

0.84 W/kg
 

Simultaneous Transmission

1.58 W/kg
 

Wireless Router

1.40 W/kg
 

Phablet

3.95 W/kg
 

Shopping information

In The Box

Charger, USB cable, Headphones, SIM removal tool, Documentation
Adapter, USB Cable type C, Tool to remove the SIM, User manual, Housing, Warranty
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