Difference between XIAOMI REDMI K20 and VIVO Y21T ? in United States

	PRODUCT 1	PRODUCT 2
	XIAOMI XIAOMI REDMI K20	VIVO VIVO Y21T
VERSION
Announced	2019	January 2022
Release date	2019	January 2022
NETWORK
Technology		4G
DEVICE
Dimensions	156.7 x 74.3 x 8.8 mm
Weight	191 g	182 (g6.42 oz)
S.I.M.	Double SIM	Dual SIM
Design	20 MP motorized popup	8 MP (1080p@30fps)
Other	HDR
SCREEN
langfront.Type		IPS LCD
Size	6.39 inches	6.51 inches
Resolution	1080 x 2340 pixels	720 x 1600 pixels
Protection	Gorilla Glass 5

PLATFORM
Operating system	Android 9.0 (Pie); MIUI 10	Android 11,Funtouch 12,
Chipset	Qualcomm SDM730 Snapdragon 730 (8nm)	Qualcomm SM6225 Snapdragon 680 4G (6nm)
Processor	Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)	Octa-core (4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver)
GPU	Adreno 618	Adreno 610
MEMORY
Card slot	❌	microSDXC
Internal & RAM	256 GB, 8 GB RAM ou 64/128 GB, 6 GB RAM	128GB 6GB RAM
CAMERA
Main	48 MP + 8 MP + 13 MP	50 MP (f/1.8) + 2 MP + 2 MP
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	✔️	✔️
CONNECTIVITY
Wifi	✔️	dual-band,Wi-Fi Direct,hotspot,
Bluetooth	✔️	5.0
GPS	✔️	GPS,A-GPS,GLONASS,GALILEO,BDS,
NFC	✔️	❌
Radio	✔️	FM Radio
USB	2.0,Type-C 1.0,	USB Type-C 2.0
CHARACTERISTICS
Sensors	Fingerprint (under display),accelerometer,gyroscope,proximity,compass,	Fingerprint (side-mounted),accelerometer,proximity,compass / Fingerprint (side mounted),accelerometer,proximity,compass,
Various	18W fast battery charging	Fast charging 18W - Reverse charging
BATTERY
Type	4000 mAh	5000 mAh

What is the difference between XIAOMI REDMI K20 and VIVO Y21T in United States?