Difference between SAMSUNG GALAXY M21 2021 and SAMSUNG GALAXY M40 ? in countries.United States

	PRODUCT 1	PRODUCT 2
	SAMSUNG SAMSUNG GALAXY M21 2021	SAMSUNG SAMSUNG GALAXY M40
VERSION
Announced	July 2021	2019
Release date	July 2021	2019
NETWORK
Technology	4G
DEVICE
Dimensions		155.3 x 73.9 x 7.9 mm
Weight		168 g
S.I.M.	Dual SIM	Dual SIM hybrid SIM
Design	20MP	16MP
Other
SCREEN
langfront.Type	Super AMOLED
Size	6.4 inches	6.13 inches
Resolution	1080 x 2340 pixels	1080 x 2340 pixels
Protection		Corning Gorilla Glass

PLATFORM
Operating system	Android 11,One UI 3.1 Core,	Android 9.0 (Pie); One UI
Chipset	Exynos 9611 (10nm)	Qualcomm SDM675 Snapdragon 675 (11nm)
Processor	Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)	Octa-core (2x2.0 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver)
GPU	Mali-G72 MP3	Adreno 612
MEMORY
Card slot	microSDXC	microSD, jusqu`à 1 To
Internal & RAM	64GB 4GB RAM or 128GB 6GB RAM	128 GB, 6 GB RAM ou 64 GB, 4 GB RAM
CAMERA
Main	48 MP + 5 MP (123˚) + 2 MP	32 MP + 8 MP + 5 MP
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	✔️	❌
CONNECTIVITY
Wifi	✔️	✔️
Bluetooth	✔️	✔️
GPS	✔️	✔️
NFC	❌	✔️
Radio	FM radio,RDS,recording / FM Radio,RDS,registration,	FM Radio
USB	USB Type-C 2.0	2.0,type C 1.0 reversible connector,
CHARACTERISTICS
Sensors	Fingerprint (rear-mounted),accelerometer,gyro,proximity,compass,barometer / Fingerprint (rear mounted),accelerometer,gyroscope,proximity,compass,barometer,	Fingerprint (rear mounted),accelerometer,gyroscope,proximity,compass,
Various	Fast Charging 15W / Fast battery charge 15W	15W fast battery charging
BATTERY
Type	6000 mAh	3500 mAh

What is the difference between SAMSUNG GALAXY M21 2021 and SAMSUNG GALAXY M40 in countries.United States?