In CTA your most important items and first ones to receive are the Backpack and Phone.
This is a small guide on both of them.
The backpack acts as inventory magnification, for around 45 more slots, safe even after death.
This means all items within it are safely stored until you need them.
It can not be opened during combat tag and may delay you in quickly opening again.
Backpacks are displayed on the back of your player character, meaning skins for them can make your character look even more unique! Use the Cosmetics app on your phone (explained just below) to change or look at available models.
The Phone is the most important item in everyday life, just like in CTA! It has miscelaneous features and QoL options for gameplay. It will always be visible on the bottom right notifying you about your wanted status for example.
The phone contains multiple apps. It can be opend and used by pressing either left or right click.
The apps which it contains are as followed (left top to right bottom):