Difference between VIVO X30 PRO and OPPO K1 ?

	PRODUCT 1	PRODUCT 2
	VIVO VIVO X30 PRO	OPPO OPPO K1
VERSION
Announced	2019	2018
Release date	2019	2018
NETWORK
Technology
DEVICE
Dimensions	158.5 x 74.1 x 8.8 mm
Weight	198.5 g
S.I.M.	Double SIM	Duel
Design	32MP	2160p@30fps,1080p@30fps,
Other
SCREEN
langfront.Type
Size	6.44 inches	6.4 inches - 1080 x 2340 pixels
Resolution	1080 x 2400 pixels
Protection

PLATFORM
Operating system	Android 9.0 (Pie); Funtouch 10.0	Android 8.1 (Oreo)
Chipset	Exynos 980 (8nm)
Processor	Octa-core (2x2.2 GHz Cortex-A77 & 6x1.8 GHz Cortex A55)	Octa-core (4x2.0 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
GPU	Mali-G76 MP5
MEMORY
Card slot	❌	❌
Internal & RAM	128GB 8GB RAM, 256GB 8GB RAM	64 GB, 4/6 GB RAM
CAMERA
Main	64 MP + 32 MP + 8 MP	Dual 16 MP & 2 MP - Selfie 25 MP
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	✔️	✔️
CONNECTIVITY
Wifi	✔️
Bluetooth	✔️
GPS	✔️	✔️
NFC	✔️
Radio	FM Radio	❌
USB	Type-C 1.0
CHARACTERISTICS
Sensors	Fingerprint (under screen,optical),accelerometer,gyroscope,proximity,compass,	Fingerprint reader
Various	33W fast battery charging
BATTERY
Type	4350 mAh	3500 mAh

What is the difference between VIVO X30 PRO and OPPO K1 ?