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BCR: Automatically Record Calls on Rooted Android

BCR is a background call recorder for Android 9+ devices with root access or compatible custom firmware. It records cellular calls automatically and saves them in configurable audio formats, without network access.

KotlinGPL-3.0AndroidPrivacyUtility
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69/100

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+8 stars in the last 8 days

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Overview

BCR is an Android app that automatically records incoming and outgoing cellular calls. It is designed for rooted devices or compatible custom firmware, where system-level permissions let it access call audio and monitor call state.

It suits people who want a simple recorder that runs in the background, rather than a general-purpose audio app or a solution for stock, unrooted Android. Recordings can be saved in several formats, and the app does not request network access.

Key Features

  • Automatically records incoming and outgoing calls in the background.
  • Supports OGG/Opus, M4A/AAC, FLAC, WAV/PCM, and AMR formats.
  • Offers auto-record rules, a quick settings toggle, and optional stereo recording on supported devices.
  • Saves recordings through Android's Storage Access Framework, including to SD cards and USB storage.
  • Can record before the first unlock after reboot, then move those recordings to the selected output directory.
  • Supports Magisk and KernelSU installation, as well as compatible custom firmware installation through recovery.
  • Adds call details to filenames or optional JSON metadata when the relevant permissions are granted.
  • Does not have network access permission.

Use Cases

  • Rooted Android users who want calls recorded automatically without opening a recorder for each call.
  • People who want recordings saved to removable or externally connected storage through Android's document picker.
  • Users who need recordings available after reboot, including calls made before the device's first unlock.
  • Users who want to choose between compact lossy formats and larger lossless formats for their recordings.

Getting Started

Download the latest release from the BCR releases page. On a Magisk- or KernelSU-rooted device, flash the release ZIP as a module, reboot, and open BCR. See the README for custom firmware installation steps and device-specific guidance.

Considerations

  • Requires Android 9 or newer and root access or compatible custom firmware. It is not intended for stock, unrooted firmware.
  • Recording depends on the device exposing Android's VOICE_CALL audio source. Devices that do not support it may not record correctly; test calls before relying on BCR.
  • Stereo channel separation is only known to work on newer Pixel devices, and behavior on other devices may vary.
  • BCR does not announce recordings to the other party. Users are responsible for complying with applicable consent laws.
  • Some optional features require call log, contacts, or phone permissions. Call redirection support also has limitations.
  • Installing it as a system app and configuring root modules may require technical familiarity. Check the README for the appropriate installation path and caveats.

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