Pip-Boy 3000 Mark IV

The Pip-Boy 3000 Mark IV is a pre-War Personal Information Processor (PIP) in Fallout 4 manufactured by RobCo Industries and acts as a database for the player character's personal information and inventory. It is an updated version of the Pip-Boy 3000.

Background
The Pip-Boy 3000 Mark IV was distributed to five Vault-Tec vaults in the vicinity of Boston: Vault 75, Vault 81, Vault 95, Vault 111, and Vault 114.

Functions
The new Pip-Boy features a number of similarities and differences between previous models. It bears closest resemblance to the Pip-Boy 3000. According to the start-up screen, its features include:
 * Pip-OS v7.1.0.8
 * 64k RAM
 * More than 38,911 bytes of internal storage

Items tab
Unlike the Pip-Boy 3000A, the "Message" tab is merged with others items such as magazines. Furthermore, it is now sorted in alphabetical order. This can make it hard to browse for a desired holotape or note, even if you just picked it up.

Data tab
Unlike the Pip-Boy 3000A, you can now select several active quests at once.

Map tab
Unlike the 3000A, local and world maps have their own tab, separate from the Data tab.

Radio tab
Unlike the 3000A, radio functionality has its own tab, separate from the Data tab.

Pip-Boy light
The display of the 3000 Mark IV can set set to an over-bright mode to provide illumination in dark areas. The color of this light matches the user's selected display color preference.

To activate the Pip-Boy light, hold down the Pip-Boy access button. The default Pip-Boy access buttons are the  key on PC, the circle button on PS4, and B on Xbox One. The Pip-Boy light can be deactivated the same way.

Adapter plug
A unique feature of the 3000 Mark IV is an adapter plug attached to the underside of the device. This plug is used to open and close the main doors of vaults in the Commonwealth, effectively making the Pip-Boy a vault key.

Behind the scenes

 * The Pip-Boy 3000 Mark IV was first revealed on June 3, 2015, in the Fallout 4 announcement trailer.
 * The Pip-boy's start-up screen shows 64 kB of RAM, and 38911 bytes free are a reference to the Commodore 64.
 * A real-world model of this Pip-Boy 3000 Mark IV has been made in limited numbers by Bethesda. It can hold certain sized smartphones inside and has an app to be used with it when the game is released. It is included in Fallout 4 's Pip-Boy Edition with a display stand.

Bugs

 * Viewing the local map may cause an item in the player's inventory to be displayed in the background.

Gallery
Pip-Boy 3000 Mark IV 핍보이 3000 마크 IV Pip-Boy 3000 Mk4 (Fallout 4)