Xiaomi Mi A1 vs Xiaomi Mi 9

Compare phone and tablet specifications of up to three devices. Type a model name in the search field of our phone specs comparison tool or pick a popular device from the ones below.

$300 VIEW ON AMAZON

Display

Size

5.5 inches
6.4 inches

Resolution

1920 x 1080 pixels,
401 PPI
2340 x 1080 pixels, 19.5:9 ratio,
403 PPI

Technology

IPS LCD
AMOLED

Screen-to-body

70.87 %
85.23 %

Peak brightness

450 cd/m2 (nit)
600 cd/m2 (nit)

Features

Oleophobic coating, Ambient light sensor, Proximity sensor
HDR video support, Oleophobic coating, Scratch-resistant glass (Corning Gorilla Glass 6), Ambient light sensor, Proximity sensor

Hardware

System chip

Qualcomm Snapdragon 625 8953
Qualcomm Snapdragon 855

Processor

Octa-core, 2000 MHz, ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 2840 MHz, Kryo 485, 64-bit, 7 nm

GPU

Adreno 506
Adreno 640

RAM

4GB LPDDR3
6GB LPDDR4

Internal storage

64GB
128GB, not expandable

Storage expansion

microSDXC up to 256 GB
 

OS

Android (9.0 Pie, 8.1 Oreo, 8.0 Oreo, 7.1 Nougat)
Android (9.0 Pie), Xiaomi MI UI

Battery

Capacity

3080 mAh
3300 mAh

Type

Li - Ion, Not user replaceable
Not user replaceable

Charging

Fast charging
Qualcomm Quick Charge 4+, Qi wireless charging

Camera

Rear

Dual camera
Triple camera

Main camera

12 MP (PDAF)
48 MP (Sapphire crystal lens cover, Laser and PDAF, CMOS image sensor)

Specifications

Aperture size: F2.2; Focal length: 26 mm; Pixel size: 1.25 μm
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm

Second camera

12 MP (Telephoto, Autofocus)
12 MP (Telephoto, Sapphire crystal lens cover, PDAF)

Specifications

Optical zoom: 2x; Aperture size: F2.6; Focal Length: 50 mm; Pixel size: 1 μm
Optical zoom: 2x; 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)

Specifications

 
Aperture size: F2.2; Focal Length: 17 mm; Sensor size: 1/3"; Pixel size: 1 μm

Video recording

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (30 fps), 1280x720 (HD) (120 fps)
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (960 fps), 1280x720 (HD) (960 fps)

Features

Video calling, Video sharing
Continuous autofocus, EIS, Video calling, Video sharing

Front

5 MP
20 MP (HDR)

Design

Dimensions

6.12 x 2.98 x 0.29 inches (155.4 x 75.8 x 7.3 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)
the average is 6.2 oz (176 g)
6.10 oz (173.0 g)
the average is 6.2 oz (176 g)

Materials

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

Biometrics

Fingerprint (touch)
In-screen fingerprint

Features

Touch sensitive control keys
 

Colors

Black, Gold, Pink
Black, Purple, Blue

Cellular

LTE (FDD)

Bands 1(2100), 3(1800), 5(850)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 20(800 DD), 28(700 APT)

LTE (TDD)

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

UMTS

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

Data Speed

LTE, HSPA, HSUPA
LTE-A, HSPA, HSUPA

Dual SIM

Yes
Yes

SIM type

Nano SIM
Nano SIM

HD Voice

 
Yes

VoLTE

 
Yes

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

Radio

FM
 

Additional microphone(s)

for Noise cancellation
 

Connectivity & Features

Bluetooth

4.2
5.0

Wi-Fi

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

USB

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

Features

Mass storage device, Charging
Mass storage device, OTG, Charging, Headphones port

Location

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

Sensors

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

Other

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

Phone features

Notifications

 
Haptic feedback, Music ringtones, Vibration

Other features

 
Voice dialing, Voice commands, Voice recording

Buyers information

In The Box

 
Case, 18W Charger, USB Type-C cable, Type-c to 3.5 mm adapter, SIM removal tool, Documentation
This copy is for your personal, non-commercial use only. You can order presentation-ready copies for distribution to your colleagues, clients or customers at https://www.parsintl.com/phonearena or use the Reprints & Permissions tool that appears at the bottom of each web page. Visit https://www.parsintl.com/ for samples and additional information.
FCC OKs Cingular's purchase of AT&T Wireless