Pixel IMS

Enable carrier IMS features on Pixel phones without root — VoLTE, 5G calling (VoNR), Wi-Fi calling (VoWiFi) and more, configured per SIM.

What it does

• Turns on IMS features by overriding the carrier configuration: VoLTE, VoNR (5G calling), VoWiFi, Wi-Fi calling while roaming, and supplementary services over UT.
• Per-SIM control — each SIM slot has its own toggles, status and actions.
• Live status — shows the device's real IMS registration state and the effective carrier config for each feature, read straight from the system.
• Apply / Restore — write your settings to a SIM, or roll it back to the carrier defaults.
• Apply on boot — re-applies your settings automatically in the background once the phone is back online.

How it works

There is no public API to change carrier config, so the app borrows shell privileges locally:

1. It connects to the phone's own Wireless Debugging endpoint over loopback ADB (via kadb) — the port is discovered automatically with mDNS.
2. It launches a small Instrumentation (am instrument --no-restart) that adopts the shell permission identity and calls CarrierConfigManager.overrideConfig for the selected SIM.
3. Status is read back with the same shell privileges via a lightweight app_process tool.

Requirements

• A Tensor Pixel device on Android 14+ (minSdk 34).

Usage

1. Open the app and follow the setup card: enable Wireless Debugging and enter the pairing code from the system dialog (you can type it straight from the notification).
2. Pick a SIM, toggle the features you want, and tap Apply.
3. Optionally enable Apply on boot so the configuration survives restarts.
4. Use Restore to return a SIM to its carrier defaults.

Disclaimer

This tool changes low-level telephony configuration on your own device. Whether a feature actually works still depends on your carrier and network. Use at your own risk.