# RK3066 HeadUnit

> Call from Android, Media buttons and other for RK3066 car HeadUnits.

Canonical page: [https://chrome-stats.com/d/com.petrows.mtcservice](https://chrome-stats.com/d/com.petrows.mtcservice)

## Overview

- **ID:** `com.petrows.mtcservice`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** petro.ws
- **Category:** AUTO\_AND\_VEHICLES
- **Downloads:** 27,997
- **Rating:** 5.00 / 5 (128 ratings)
- **Version:** 2.18
- **Last updated:** 2017-03-11
- **First published:** 2014-10-24
- **Publisher country:** DE
- **Data as of:** 2026-09-15
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.petrows.mtcservice)
- **Website:** [http://petro.ws/](http://petro.ws/)
- **Privacy policy:** [https://petro.ws/projects/auto/micronteck-headunit/mtc-service/mtc-service-privacy/](https://petro.ws/projects/auto/micronteck-headunit/mtc-service/mtc-service-privacy/)

## Description

**RK3066 HeadUnit** is a versatile service app designed specifically for the RK3066 car head units running Android 4.2 and 4.4. It offers seamless Bluetooth call integration from Android apps, with optimal results when paired with the True Contacts app. The extension remaps media buttons from CAN/Key inputs, supporting a variety of custom media players, and even allows direct control of media apps like PCradio (root access required).

The app features auto-start for music apps on boot or via phone headunit keys, dynamic volume adjustment based on vehicle speed, and safe volume limits during headunit start and stop. It supports both older and newer versions of headunits on the Rockchip RK30SDK platform, including popular brands such as Klyde, Roadmaster, Hui Fei, Microntek, SMARTY, and TWIN. Additionally, the extension includes a call history widget and ensures proper handling of media keys during boot-up. Open-source and continuously improved via beta testing, RK3066 HeadUnit enhances your car's media and call experience efficiently.

## Rankings

- #380,307 — Overall

## Review summary

RK3066 HeadUnit app enhances steering wheel controls compatibility for Android head units, especially with Poweramp and alternative media players. It fixes many missing functionalities in head units, such as automatic sound level adjustments and control customizations. However, it has issues with full control support for apps like Spotify, Pandora, and Google Play Music. Some users report long startup times and missing features like changing device serial number or text messaging integration. Overall, it is well-received for improving functionality on specific head units and appreciated for the developer's efforts.

### Pros

- Enables steering wheel controls (SWC) to work with various music apps, particularly Poweramp.
- Provides missing functionalities like automatic sound level adjustment and auto volume control based on speed.
- Easy to set up and works well with specific head units like Pumpkin and JK1001.
- Useful for integrating controls for apps that the head unit doesn't natively support.
- Free app with active developer support and updates.

### Cons

- Steering wheel controls do not work properly or at all with some music apps like Spotify and Pandora.
- Takes a long time to load when starting up.
- Does not support control of Google Play Music app fully; e.g., forward skips pause music instead of skipping tracks.
- Lacks feature to change device serial number, which some GPS apps require.
- Does not support text messaging or dialer widgets as requested by some users.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.petrows.mtcservice)