Difference between VIVO U3X and VIVO Y55S (2023) ?

	PRODUCT 1	PRODUCT 2
	VIVO VIVO U3X	VIVO VIVO Y55S (2023)
VERSION
Announced	March 2021	January 2023
Release date	March 2021	January 2023
NETWORK
Technology	5G	5G
DEVICE
Dimensions	164.2 x 75.4 x 8.4 mm (6.46 x 2.97 x 0.33 in)	164 x 75.9 x 8.3 mm (6.46 x 2.99 x 0.33 in)
Weight	185.5 (g6.56 oz)	187 (g6.60 oz)
S.I.M.	Dual SIM
Design	8 MP (1080p@30fps)	8 MP (1080p@30fps)
Other
SCREEN
langfront.Type	IPS LCD,90Hz,	IPS LCD
Size	6.58 inches	6.58 inches
Resolution	1080 x 2408 pixels	1080 x 2408 pixels
Protection

PLATFORM
Operating system	Android 11,OriginOS for iQOO 1.0,	Android 12,Funtouch 12,
Chipset	Qualcomm SM4350 Snapdragon 480 5G (8nm)	Mediatek MT6833 Dimensity 700 (7nm)
Processor	Octa-core (2x2.0 GHz Kryo 460 & 6x1.8 GHz Kryo 460)	Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU	Adreno 619	Mali-G57 MC2
MEMORY
Card slot	❌	microSDXC
Internal & RAM	64GB 6GB RAM, 128GB 4GB RAM, 128GB 8GB RAM	128GB 4GB RAM or 128GB 6GB RAM
CAMERA
Main	13 MP + 2 MP	50 MP (f/1.8) + 2 MP (macro) + 2 MP (depth)
SOUND
Loudspeaker	✔️	✔️
Jack 3,5 mm	✔️	✔️
CONNECTIVITY
Wifi	✔️	dual-band,Wi-Fi Direct,
Bluetooth	✔️	5.1
GPS	✔️	✔️
NFC	❌	✔️
Radio	❌	FM Radio
USB	USB Type-C 2.0	USB Type-C
CHARACTERISTICS
Sensors	Fingerprint (side-mounted),accelerometer,proximity,compass / Fingerprint (side mounted),accelerometer,proximity,compass,	Fingerprint (side-mounted),accelerometer,gyro,proximity,compass,
Various	Fast Charging 18W / Fast battery charge 18W	Fast Charging 18W
BATTERY
Type	5000 mAh	5000 mAh

What is the difference between VIVO U3X and VIVO Y55S (2023) ?