Difference between VIVO U3X and OUKITEL RT8 ? in United States

	PRODUCT 1	PRODUCT 2
	VIVO VIVO U3X	OUKITEL OUKITEL RT8
VERSION
Announced	March 2021	March 2024
Release date	March 2021	March 2024
NETWORK
Technology	5G	4G
DEVICE
Dimensions	164.2 x 75.4 x 8.4 mm (6.46 x 2.97 x 0.33 in)	265.1 x 176.7 x 15.1 mm (10.44 x 6.96 x 0.59 in)
Weight	185.5 (g6.56 oz)	996.7 (g2.20 lb)
S.I.M.	Dual SIM
Design	8 MP (1080p@30fps)	32 MP (1080p@30fps)
Other		IP68/IP69K dust/water resistant
SCREEN
langfront.Type	IPS LCD,90Hz,	IPS LCD
Size	6.58 inches	11.0 inches
Resolution	1080 x 2408 pixels	1200 x 1920 pixels
Protection		Corning Gorilla Glass 5

PLATFORM
Operating system	Android 11,OriginOS for iQOO 1.0,	Android 13
Chipset	Qualcomm SM4350 Snapdragon 480 5G (8nm)	Mediatek Helio G99 (6nm)
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	256GB 6GB RAM
CAMERA
Main	13 MP + 2 MP	48 MP (f/1.8) + 20 MP (infrared night vision lights) + 5 MP (macro)
SOUND
Loudspeaker	✔️	Yes, with stereo (4 speakers)
Jack 3,5 mm	✔️	❌
CONNECTIVITY
Wifi	✔️	dual-band
Bluetooth	✔️	5.1
GPS	✔️	✔️
NFC	❌	✔️
Radio	❌	FM radio
USB	USB Type-C 2.0	USB Type-C 2.0
CHARACTERISTICS
Sensors	Fingerprint (side-mounted),accelerometer,proximity,compass / Fingerprint (side mounted),accelerometer,proximity,compass,	Accelerometer,gyro,proximity,compass,
Various	Fast Charging 18W / Fast battery charge 18W	Faster Charging 33W, Reverse Charging
BATTERY
Type	5000 mAh	20000 mAh

What is the difference between VIVO U3X and OUKITEL RT8 in United States?