# Install DCC & Apps

### Core components (installed automatically)

The following components are mandatory:

* **DCC (Device Control Center)**
* **VPN app**

{% hint style="warning" %}
DCC and VPN are pre-selected and cannot be removed.\
They are essential for device control and encrypted connectivity within Castrum OS.
{% endhint %}

<figure><img src="/files/nvGiK1kCQwaigTEzilMS" alt="" width="375"><figcaption></figcaption></figure>

### Optional Apps

You may now choose additional privacy-focused apps to install on your device.

Select from a curated list of 30+ trusted applications, including:

* Signal
* Telegram
* DuckDuckGo Browser
* Proton Mail
* Organic Maps
* KeePassDX
* Simple Tools
* and others

These apps are pre-vetted and privacy-oriented.

### To proceed

1. Select or deselect optional apps based on your preference.
2. Click <mark style="color:$primary;">**Install**</mark>.
3. The installation process will begin immediately.

{% hint style="danger" %}

## During installation:

* Do not disconnect the phone.
* Do not disable USB debugging.
* The process may take several minutes.
  {% endhint %}


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