Difference between SAMSUNG GALAXY M31 PRIME and SAMSUNG GALAXY A21 ? in United States

	PRODUCT 1	PRODUCT 2
	SAMSUNG SAMSUNG GALAXY M31 PRIME	SAMSUNG SAMSUNG GALAXY A21
VERSION
Announced	2020	2020
Release date	2020	2020
NETWORK
Technology	GSM / HSPA / LTE
DEVICE
Dimensions		167.8 x 76.7 x 8.1 mm
Weight		193 g
S.I.M.	Dual SIM / Double SIM	Single SIM (Nano-SIM) or dual SIM hybrid (Nano-SIM),dual watch),
Design	32 MP video: 4K@30fps,1080p@30fps,	13MP
Other
SCREEN
langfront.Type	Super AMOLED
Size	6.4 inches	6.5 inches
Resolution	1080 x 2340 pixels	720 x 1600 pixels
Protection	Corning Gorilla Glass 3

PLATFORM
Operating system	Android 10,One UI 2.1,	Octa-core (4x2.3 GHz & 4x1.8 GHz)
Chipset	Exynos 9611 (10nm)
Processor	Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)	Octa-core (4x2.3 GHz & 4x1.8 GHz)
GPU	Mali-G72 MP3
MEMORY
Card slot	microSDXC	microSDXC
Internal & RAM	64GB 6GB RAM, 128GB 6GB RAM	32GB 3GB RAM
CAMERA
Main	64 MP + 8 MP + 5 MP + 5MP	16 MP + 8 MP + 2 MP + 2 MP
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	✔️	✔️
CONNECTIVITY
Wifi	✔️	✔️
Bluetooth	✔️	✔️
GPS	✔️	✔️
NFC		✔️
Radio	FM radio,RDS,recording / FM Radio,RDS,registration,
USB	Type-C 2.0	2.0,Type-C 1.0,
CHARACTERISTICS
Sensors	Fingerprint (rear-mounted),accelerometer,gyro,proximity,compass / Fingerprint (rear mounted),	Fingerprint (rear mounted),accelerometer,gyroscope,proximity,compass,
Various	Fast Charging 15W / Fast battery charge 15W	15W fast battery charging
BATTERY
Type	6000 mAh	4000 mAh

What is the difference between SAMSUNG GALAXY M31 PRIME and SAMSUNG GALAXY A21 in United States?