Difference between OPPO A55 and SAMSUNG GALAXY A21 ?

	PRODUCT 1	PRODUCT 2
	OPPO OPPO A55	SAMSUNG SAMSUNG GALAXY A21
VERSION
Announced	October 2021	2020
Release date	October 2021	2020
NETWORK
Technology	4G
DEVICE
Dimensions	163.6 x 75.7 x 8.4 mm (6.44 x 2.98 x 0.33 in)	167.8 x 76.7 x 8.1 mm
Weight	193 (g6.81 oz)	193 g
S.I.M.	Dual SIM	Single SIM (Nano-SIM) or dual SIM hybrid (Nano-SIM),dual watch),
Design	16MP	13MP
Other	Splash-proof / Resistant to splashes
SCREEN
langfront.Type	IPS LCD
Size	6.51 inches	6.5 inches
Resolution	720 x 1600 pixels	720 x 1600 pixels
Protection	NEG T2X-1

PLATFORM
Operating system	Android 11,ColorOS 11.1,	Octa-core (4x2.3 GHz & 4x1.8 GHz)
Chipset	MediaTek Helio G35 (12nm)
Processor	Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)	Octa-core (4x2.3 GHz & 4x1.8 GHz)
GPU	PowerVR GE8320
MEMORY
Card slot	microSDXC	microSDXC
Internal & RAM	64GB 4GB RAM or 128GB 6GB RAM	32GB 3GB RAM
CAMERA
Main	50 MP + 2 MP + 2 MP	16 MP + 8 MP + 2 MP + 2 MP
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	✔️	✔️
CONNECTIVITY
Wifi	✔️	✔️
Bluetooth	✔️	✔️
GPS	✔️	✔️
NFC	❌	✔️
Radio	❌
USB	USB Type-C 2.0	2.0,Type-C 1.0,
CHARACTERISTICS
Sensors	Fingerprint (side-mounted),accelerometer,proximity,compass / Fingerprint (side mounted),accelerometer,proximity,compass,	Fingerprint (rear mounted),accelerometer,gyroscope,proximity,compass,
Various	Fast Charging 18W / Fast battery charge 18W	15W fast battery charging
BATTERY
Type	5000 mAh	4000 mAh

What is the difference between OPPO A55 and SAMSUNG GALAXY A21 ?