Difference between SAMSUNG GALAXY Z FOLD 4 and VIVO Y81 ?

	PRODUCT 1	PRODUCT 2
	SAMSUNG SAMSUNG GALAXY Z FOLD 4	VIVO VIVO Y81
VERSION
Announced	August 2022
Release date	August 2022	2018
NETWORK
Technology	5G
DEVICE
Dimensions	Unfolded: 155.1 x 130.1 x 6.3 mm / Folded: 155.1 x 67.1 x 15.8 mm
Weight	263 (g9.28 oz)
S.I.M.
Design	4 MP (under display) / Cover camera: 10 MP
Other	IPX8 water resistant / Armor aluminum frame / Stylus support
SCREEN
langfront.Type	Foldable Dynamic AMOLED 2X,120Hz,HDR10+,
Size	7.6 inches	6.22 inches - 720 x 1520 pixels
Resolution	1812 x 2176 pixels
Protection

PLATFORM
Operating system	Android 12,One UI 4.1,	Android 8.1 (Oreo)
Chipset	Qualcomm SM8475 Snapdragon 8+ Gen 1 (4nm)
Processor	Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)	Octa-core 2.0 GHz Cortex-A53
GPU	Adreno 670
MEMORY
Card slot	❌
Internal & RAM	256GB 12GB RAM or 512GB 12GB RAM or 1TB	32 GB, 3 RAM
CAMERA
Main	50 MP (f/1.8) + 10 MP (3x optical zoom) + 12 MP (123˚)	13 MP - Selfie 5 MP
SOUND
Loudspeaker	Yes, with stereo speakers
Jack 3,5 mm	❌
CONNECTIVITY
Wifi	dual-band,Wi-Fi Direct,hotspot,
Bluetooth	5.2
GPS	✔️
NFC	✔️
Radio	❌
USB	USB Type-C 3.2
CHARACTERISTICS
Sensors	Fingerprint (side-mounted),accelerometer,gyro,proximity,compass,barometer,Bixby natural language commands,Samsung DeX (desktop experience support) Samsung Pay,Ultra Wideband (UWB) support,
Various	Fast charging 25W,Fast wireless charging 15W,Reverse wireless charging 4.5W,
BATTERY
Type	4400 mAh	3260 mAh

What is the difference between SAMSUNG GALAXY Z FOLD 4 and VIVO Y81 ?