Data SIM Switcher (Root Only)

A lightweight, purely root-based Quick Settings tile to switch the default mobile data SIM on dual-SIM Android devices.

Unlike other implementations that rely on Shizuku and persistent daemons, this app uses libsu to spawn a Root IPC service for the exact millisecond the tile is tapped. It's incredibly fast, survives reboots reliably, and uses zero background battery.

Features

• Zero Daemons: Uses on-demand Magisk/KernelSU root access.
• No Permissions Required: Bypasses Android's READ_PHONE_STATE restrictions entirely by doing all calculation logic natively in the root daemon.
• Backward Compatible: Uses an internal reflection engine instead of hard-linked AIDL files, making it immune to hidden API signature changes across Android versions (Supports Android 7+).
• Smart Toggling: Automatically scans active slots, switches to the next one, and enables the cellular data on the new SIM.

Setup & Installation

1. Install the APK.
2. Open the app once to grant Superuser privileges via Magisk/KernelSU or manually granting root in your root managers.
3. Pull down your Quick Settings panel, tap edit, and add the "Switch SIM" tile.

Dependencies

• libsu - Android Root IPC
• Jetpack Compose - UI

Credit

Architecture inspired by the reflection engine found in Mygod/DataSimTile.