Difference between VIVO IQOO Z1 and ? in countries.United States

	PRODUCT 1	PRODUCT 2
	VIVO VIVO IQOO Z1
VERSION
Announced	2020
Release date	2020
NETWORK
Technology
DEVICE
Dimensions	164 x 75.6 x 8.9 mm
Weight	195 g
S.I.M.	Double SIM
Design	16MP
Other	HDR 10 - 144Hz refresh rate
SCREEN
langfront.Type
Size	6.57 inches
Resolution	1080 x 2408 pixels
Protection

PLATFORM
Operating system	Android 10,iQOO UI 1.0,
Chipset	Mediatek Dimensity 1000+ (7nm)
Processor	Octa-core (4x2.6 GHz Cortex-A77 & 4x2.0 GHz Cortex-A55)
GPU	Mali-G77 MC9
MEMORY
Card slot	❌
Internal & RAM	128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
CAMERA
Main	48 MP + 8 MP + 2 MP
SOUND
Loudspeaker	✔️
Jack 3,5 mm	✔️
CONNECTIVITY
Wifi	✔️
Bluetooth	✔️
GPS	✔️
NFC	✔️
Radio	❌
USB	2.0,Type-C 1.0,
CHARACTERISTICS
Sensors	Fingerprint (lateral),accelerometer,proximity,compass,
Various	44W fast battery charging
BATTERY
Type	4500 mAh

What is the difference between VIVO IQOO Z1 and in countries.United States?