Dhizuku

Overview

Dhizuku, created by iamr0s, solves one of the oldest architectural limitations of the Android operating system: Device Owner exclusivity.

Under the Android Enterprise framework (android.app.admin.DevicePolicyManager), a single application can be designated as the system’s “Device Owner”. The Device Owner holds extraordinary administrative powers over the device:

• Silently installing and uninstalling applications without user confirmation
• Instantly freezing (hiding) background packages without battery drain
• Restricting network policies, camera usage, and notification banners
• Managing hardware keys and kiosk mode

Because Android enforces a strict one-owner rule, users historically had to choose between one specific freeze utility (like Island or Ice Box) or lock themselves out of other tools. Dhizuku acts as a Device Owner Proxy Server: it claims the single Device Owner slot and exposes a clean Binder IPC API to allow authorized client apps (Hail, Canta, App Manager, Install with Options) to safely share those administrative privileges.

Technical Architecture & Binder Proxying

• Android System Framework: Hosts android.app.admin.DevicePolicyManager (DPM) providing enterprise-grade administrative APIs.
• Dhizuku Server:
  • Holds official Device Owner status via DeviceAdminReceiver.
  • Enforces per-application permission tokens and access policies.
  • Multiplexes IPC Binder requests between unprivileged clients and DPM.
• Delegated Client Applications:
  • Hail: Freezes, hides, or suspends apps using Device Policy Manager APIs without root.
  • App Manager / Canta: Manages user policies and system package lifecycles cleanly.

Activation Methods

Dhizuku can be activated through three distinct vectors depending on your device setup:

Method 1: Root Activation (Magisk, KernelSU, APatch)

If your device is rooted, open Dhizuku, select Root Activation, and tap Grant when your root manager dialog appears. Dhizuku automatically writes its component to /data/system/device_owner_2.xml and reloads policy caches.

Method 2: Shizuku Activation

If you already run Shizuku:

1. Open Dhizuku.
2. Select Activate via Shizuku.
3. Authorize the Shizuku permission request.

Method 3: Rootless ADB Shell (No Root Required)

For completely stock devices:

1. Enable Developer Options and USB Debugging on your phone.
2. Connect your device to a computer with Android SDK Platform-Tools.
3. Open a terminal and run:

   adb shell dpm set-device-owner com.rosan.dhizuku/.server.DhizukuDAReceiver

4. If successful, your terminal displays Success: Device owner set to package....

Note: If you receive java.lang.IllegalStateException: Not allowed to set the device owner because there are already some accounts on the device, you must temporarily remove all Google, Telegram, and corporate accounts under Settings -> Passwords & Accounts, run the command, and re-add them afterwards.

Ecosystem Integration

Once activated, Dhizuku powers a rich suite of rootless open-source utilities:

• Hail: Instantly freezes bloatware and background games using DevicePolicyManager.setApplicationHidden().
• Canta: Deep debloater that safely removes OEM system packages without bootloop risk.
• Install with Options: Enables silent downgrade, bypass of SDK version limits, and split APK installations without manual tapping.