Difference between OPPO A1K and VIVO S18E ?

	PRODUCT 1	PRODUCT 2
	OPPO OPPO A1K	VIVO VIVO S18E
VERSION
Announced	2019	December 2023
Release date	2019	January 2024
NETWORK
Technology		5G
DEVICE
Dimensions	154.5 x 73.8 x 8.4 mm	162.4 x 74.9 x 7.7 mm (6.39 x 2.95 x 0.30 in)
Weight	170 g	193 (g6.81 oz)
S.I.M.	Double SIM
Design	5 MP	16 MP (1080p@30fps)
Other
SCREEN
langfront.Type		AMOLED,120Hz,
Size	6.1 inches	6.67 inches
Resolution	720 x 1560 pixels	1080 x 2400 pixels
Protection	Gorilla Glass 3
PLATFORM
Operating system	Android 9.0 (Pie); ColorOS 6	Android 14,OriginOS 4,
Chipset	Mediatek MT6762 Helio P22 (12nm)	Mediatek Dimensity 7200 (4nm)
Processor	Octa-core 2.0 GHz Cortex-A53	Octa-core (2x2.8 GHz Cortex-A715 & 6x Cortex-A510)
GPU	PowerVR GE8320	Mali-G610 MC4
MEMORY
Card slot	microSD, jusqu`à 256 Go	❌
Internal & RAM	32GB 2GB RAM	256GB 12GB RAM or 512GB 12GB RAM
CAMERA
Main	8 MP	50 MP (f/1.8) (Optical Image Stabilization) + 2 MP (depth)
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	✔️	❌
CONNECTIVITY
Wifi	✔️	dual-band,Wi-Fi Direct,
Bluetooth		5.3
GPS	✔️	✔️
NFC		✔️
Radio	FM Radio	❌
USB	microUSB 2.0	USB Type-C 2.0
CHARACTERISTICS
Sensors	Accelerometer,proximity,compass,	Fingerprint (under display,optical),accelerometer,gyro,proximity,compass,
Various		Fast charging 80W,Reverse charging,
BATTERY
Type	4000 mAh	4800 mAh

What is the difference between OPPO A1K and VIVO S18E ?