Difference between SAMSUNG GALAXY A31 and OPPO RENO Z ?

	PRODUCT 1	PRODUCT 2
	SAMSUNG SAMSUNG GALAXY A31	OPPO OPPO RENO Z
VERSION
Announced	2020	2019
Release date	2020	2019
NETWORK
Technology
DEVICE
Dimensions	159.3 x 73.1 x 8.6 mm	157.3 x 74.9 x 9.1 mm
Weight	185 g	186 g
S.I.M.	Single SIM (Nano-SIM) or dual SIM hybrid (Nano-SIM),dual watch),	Double SIM
Design	20MP	32MP
Other		HDR 10
SCREEN
langfront.Type
Size	6.4 inches	6.4 inches
Resolution	1080 x 2400 pixels	1080 x 2340 pixels
Protection

PLATFORM
Operating system	Android 10,One UI 2.0,	Android 9.0 (Pie); ColorOS 6
Chipset	Mediatek MT6768 Helio P65 (12nm)	Mediatek MT6779 Helio P90 (12nm)
Processor	Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55)	Octa-core (2x2.2 GHz Cortex-A75 & 6x2.0 GHz Cortex-A55)
GPU	Mali-G52 MC2	PowerVR GM9446
MEMORY
Card slot	microSDXC	❌
Internal & RAM	64GB 4GB RAM or 128GB 4GB RAM or 128GB 6GB RAM	128/256 GB, 6 GB RAM
CAMERA
Main	48 MP + 8 MP + 5 MP + 5 MP	48 MP + 5 MP
SOUND
Loudspeaker		✔️
Jack 3,5 mm		✔️
CONNECTIVITY
Wifi	✔️	✔️
Bluetooth	✔️	✔️
GPS	✔️	✔️
NFC	✔️	✔️
Radio	FM Radio,RDS,registration,	❌
USB	2.0,Type-C 1.0,	Type-C 1.0
CHARACTERISTICS
Sensors	Fingerprint (under screen,optical),accelerometer,gyroscope,proximity,compass,	Fingerprint (under display),accelerometer,gyroscope,proximity,compass,
Various	15W fast battery charging	20W fast battery charging
BATTERY
Type	5000 mAh	4035 mAh

What is the difference between SAMSUNG GALAXY A31 and OPPO RENO Z ?