Difference between OPPO A8 and SAMSUNG GALAXY M31 ?

	PRODUCT 1	PRODUCT 2
	OPPO OPPO A8	SAMSUNG SAMSUNG GALAXY M31
VERSION
Announced	2019	2020
Release date	2019	2020
NETWORK
Technology
DEVICE
Dimensions	163.9 x 75.5 x 8.3 mm	159.2 x 75.1 x 8.9 mm
Weight	180 g	191 g
S.I.M.	Double SIM	Double SIM
Design	8 MP	32MP
Other
SCREEN
langfront.Type
Size	6.5 inches	6.4 inches
Resolution	720 x 1600 pixels	1080 x 2340 pixels
Protection		Gorilla Glass 3
PLATFORM
Operating system	Android 9.0 (Pie); ColorOS 6.1	Android 10,One UI 2.0,
Chipset	Mediatek MT6765 Helio P35 (12nm)	Exynos 9611 (10nm)
Processor	Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)	Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
GPU	PowerVR GE8320	Mali-G72 MP3
MEMORY
Card slot	microSD, jusqu`à 256 Go	microSDXC
Internal & RAM	128GB 4GB RAM	64GB 6GB RAM, 128GB 6GB RAM
CAMERA
Main	12 MP + 2 MP + 2 MP	64 MP + 8 MP + 5 MP + 5 MP
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	✔️	✔️
CONNECTIVITY
Wifi	✔️
Bluetooth	✔️
GPS	✔️
NFC		✔️
Radio	FM Radio	FM Radio
USB	✔️	2.0,Type-C 1.0,
CHARACTERISTICS
Sensors	Fingerprint (rear mounted),accelerometer,proximity,compass,	Fingerprint (rear mounted),accelerometer,gyroscope,proximity,compass,
Various		15W fast battery charging
BATTERY
Type	4230 mAh	6000 mAh

What is the difference between OPPO A8 and SAMSUNG GALAXY M31 ?