Difference between SAMSUNG GALAXY M21 2021 and OPPO REALME 2 PRO ?

	PRODUCT 1	PRODUCT 2
	SAMSUNG SAMSUNG GALAXY M21 2021	OPPO OPPO REALME 2 PRO
VERSION
Announced	July 2021	2018
Release date	July 2021	2018
NETWORK
Technology	4G
DEVICE
Dimensions
Weight
S.I.M.	Dual SIM
Design	20MP	2160p@30fps,1080p@30fps,
Other
SCREEN
langfront.Type	Super AMOLED
Size	6.4 inches	6.3 inches - 1080 x 2340 pixels
Resolution	1080 x 2340 pixels
Protection
PLATFORM
Operating system	Android 11,One UI 3.1 Core,	Android 8.1 (Oreo)
Chipset	Exynos 9611 (10nm)
Processor	Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)	Octa-core (4x2.0 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
GPU	Mali-G72 MP3
MEMORY
Card slot	microSDXC	microSD, up to 256 GB
Internal & RAM	64GB 4GB RAM or 128GB 6GB RAM	128 GB, 8 GB RAM or 64 GB, 4/6 GB RAM
CAMERA
Main	48 MP + 5 MP (123˚) + 2 MP	Dual 16 MP & 2 MP - Selfie 16 MP
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	✔️	✔️
CONNECTIVITY
Wifi	✔️
Bluetooth	✔️
GPS	✔️	✔️
NFC	❌
Radio	FM radio,RDS,recording / FM Radio,RDS,registration,	❌
USB	USB Type-C 2.0
CHARACTERISTICS
Sensors	Fingerprint (rear-mounted),accelerometer,gyro,proximity,compass,barometer / Fingerprint (rear mounted),accelerometer,gyroscope,proximity,compass,barometer,	Fingerprint reader
Various	Fast Charging 15W / Fast battery charge 15W
BATTERY
Type	6000 mAh	3500 mAh

What is the difference between SAMSUNG GALAXY M21 2021 and OPPO REALME 2 PRO ?