Difference between VIVO Z1 PRO and SAMSUNG GALAXY A21 ?

	PRODUCT 1	PRODUCT 2
	VIVO VIVO Z1 PRO	SAMSUNG SAMSUNG GALAXY A21
VERSION
Announced	2019	2020
Release date	2019	2020
NETWORK
Technology
DEVICE
Dimensions	162.4 x 77.3 x 8.9 mm	167.8 x 76.7 x 8.1 mm
Weight	201 g	193 g
S.I.M.	Double SIM	Single SIM (Nano-SIM) or dual SIM hybrid (Nano-SIM),dual watch),
Design	32MP	13MP
Other
SCREEN
langfront.Type
Size	6.53 inches	6.5 inches
Resolution	1080 x 2340 pixels	720 x 1600 pixels
Protection

PLATFORM
Operating system	Android 9.0 (Pie); Funtouch 9	Octa-core (4x2.3 GHz & 4x1.8 GHz)
Chipset	Qualcomm SDM712 Snapdragon 712 (10nm)
Processor	Octa-core (2x2.3 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)	Octa-core (4x2.3 GHz & 4x1.8 GHz)
GPU	Adreno 616
MEMORY
Card slot	microSD, jusqu`à 256 Go	microSDXC
Internal & RAM	128 GB, 6 GB RAM ou 64 GB, 6/4 GB RAM	32GB 3GB RAM
CAMERA
Main	16 MP + 8 MP + 2 MP	16 MP + 8 MP + 2 MP + 2 MP
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	✔️	✔️
CONNECTIVITY
Wifi	✔️	✔️
Bluetooth	✔️	✔️
GPS	✔️	✔️
NFC		✔️
Radio
USB	microUSB 2.0	2.0,Type-C 1.0,
CHARACTERISTICS
Sensors	Fingerprint (rear mounted),accelerometer,gyroscope,proximity,compass,	Fingerprint (rear mounted),accelerometer,gyroscope,proximity,compass,
Various	18W fast battery charging	15W fast battery charging
BATTERY
Type	5000 mAh	4000 mAh

What is the difference between VIVO Z1 PRO and SAMSUNG GALAXY A21 ?