Difference between OPPO R15X and VIVO Y11S ?

	PRODUCT 1	PRODUCT 2
	OPPO OPPO R15X	VIVO VIVO Y11S
VERSION
Announced	2018	2020
Release date	2018	2020
NETWORK
Technology		GSM / HSPA / LTE
DEVICE
Dimensions		164.4 x 76.3 x 8.4 mm (6.47 x 3.00 x 0.33 in)
Weight		191 (g6.74 oz)
S.I.M.		Dual SIM / Double SIM ☺
Design	25MP	8 MP
Other
SCREEN
langfront.Type		IPS LCD
Size	6.4 inches	6.51 inches ☺
Resolution	1080 x 2340 pixels	720 x 1600 pixels ▼
Protection
PLATFORM
Operating system	Android 8.1 (Oreo)	Android 10,Funtouch 11,
Chipset		Qualcomm SM4250 Snapdragon 460 (11nm) ▼
Processor	Octa-core (4x2.0 GHz Kryo 260 & 4x1.8 GHz Kryo 260)	Octa-core (4x1.8 GHz Kryo 240 & 4x1.6 GHz Kryo 240)
GPU		Adreno 610 ▼
MEMORY
Card slot	❌	microSDXC
Internal & RAM	128 GB, 6 GB RAM	32GB 3GB RAM ▼▼
CAMERA
Main	Dual 16 MP & 2 MP	13 MP + 2 MP ▼▼
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	✔️	✔️
CONNECTIVITY
Wifi		✔️
Bluetooth		✔️
GPS	✔️	✔️
NFC		❌
Radio	❌	FM Radio ☺
USB	microUSB 2.0,	microUSB 2.0
CHARACTERISTICS
Sensors	Fingerprint reader under the screen	Fingerprint (side-mounted),accelerometer,proximity,compass / Fingerprint (side mounted) ☺,
Various		Fast Charging 10W / Fast battery charge 10W
BATTERY
Type	3500 mAh	5000 mAh ♥♥

What is the difference between OPPO R15X and VIVO Y11S ?