Xiaomi Mi 9 vs Google Pixel 4a
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.
Display
Size
Resolution
Technology
AMOLED
OLED
Screen-to-body
85.23 %
82.53 %
Peak brightness
600 cd/m2 (nit)
Features
HDR video support, Oleophobic coating, Scratch-resistant glass (Corning Gorilla Glass 6), Ambient light sensor, Proximity sensor
HDR video support, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Hardware
System chip
Qualcomm Snapdragon 855
Qualcomm Snapdragon 730 SM7150-AA
Processor
GPU
Adreno 640
Adreno 618
RAM
Internal storage
128GB, not expandable
128GB, not expandable
Device type
Smartphone
Smartphone
OS
Android (9.0 Pie), Xiaomi MI UI
Android (11, 10)
Battery
Capacity
3300 mAh
3140 mAh
Type
Not user replaceable
Li - Polymer, Not user replaceable
Charging
Qualcomm Quick Charge 4+, Qi wireless charging
USB Power Delivery
Max charge speed
Wired: 18.0W
Camera
Rear
Triple camera
Single camera
Main camera
Specifications
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Second camera
12 MP (Telephoto, Sapphire crystal lens cover, PDAF)
Specifications
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) (60 fps), 1920x1080 (Full HD) (960 fps), 1280x720 (HD) (960 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
Features
Continuous autofocus, EIS, Video calling, Video sharing
EIS
Front
20 MP (HDR)
8 MP
Design
Dimensions
Weight
the average is 6.3 oz (179 g)
the average is 6.3 oz (179 g)
Materials
Back: Glass (Corning Gorilla Glass 5); Frame: Metal
Back: Plastic; Frame: Plastic
Biometrics
In-screen fingerprint
Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key
Colors
Black, Purple, Blue
Just black
Cellular
LTE (FDD)
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)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 17(700 b), 18(800 Lower), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
LTE (TDD)
Bands 38(2600), 39(1900+), 40(2300)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
UMTS
850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz
Data Speed
Dual SIM
Yes
Yes
SIM type
Nano SIM
Nano SIM, eSIM
HD Voice
Yes
VoLTE
Yes
Multimedia
Headphones
No 3.5mm jack
3.5mm jack
Speakers
Earpiece, Loudspeaker
Earpiece, Multiple speakers
Features
aptX-HD
aptX, aptX-HD
Screen mirroring
Wireless screen share
Wireless screen share
Additional microphone(s)
for Noise cancellation
Connectivity & Features
Bluetooth
5.0
5.1
Wi-Fi
802.11 a, b, g, n, ac, dual-band; MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; MIMO, Wi-Fi Direct, Hotspot
USB
Type-C (reversible), USB 2.0
Type-C (reversible), USB 3.1
Features
Mass storage device, OTG, Charging, Headphones port
Charging
Location
GPS, A-GPS, Glonass, Galileo, BeiDou
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Barometer
Other
NFC, Infrared, VoIP, Tethering, Computer sync, OTA sync
NFC
Hearing aid compatible
M3, T4
Phone features
Notifications
Haptic feedback, Music ringtones, Vibration
Other features
Voice dialing, Voice commands, Voice recording
Regulatory Approval
Measured SAR
Head
1.18 W/kg
Body
1.19 W/kg
Simultaneous Transmission
1.59 W/kg
Wireless Router
1.00 W/kg
Buyers information
Price
$ 349
In The Box
Case, 18W Charger, USB Type-C cable, Type-c to 3.5 mm adapter, SIM removal tool, Documentation
18W USB-C power adapter, 1 m USB-C to USB-C cable (USB 2.0), Quick Start Guide, Quick Switch Adapter, SIM tool
Availability
Officially announced
Feb 20, 2019
Aug 03, 2020
