Mudita Kompakt - SMS

Mudita Products
1

Hi Mudita team,

I’ve been exploring ways to send SMS from my Linux (Ubuntu) desktop using the Mudita Kompakt and wanted to summarize the approaches I’ve tried so far:

What I’ve Tried

1. USB modem (AT commands)

  • ttyACM0 appears when the Kompakt is connected via USB.
  • Tested with minicom and gammu.
  • No echo or AT command response received.
  • Appears that Kompakt does not expose a functional AT-compatible modem interface over USB.

2. Bluetooth MAP profile

  • Paired and trusted the Kompakt via bluetoothctl.
  • Device advertises Message Access Server UUID (00001132-0000-1000-8000-00805f9b34fb).
  • Used obexd and D-Bus to attempt session creation with org.bluez.obex.
  • D-Bus call to CreateSession consistently times out with org.bluez.obex.Error.Failed.

This strongly suggests that although the Kompakt advertises MAP, it doesn’t support actual message access over Bluetooth for external clients — at least not in a standard, open way.

My Questions

  1. Does the Mudita Kompakt officially support sending SMS over USB or Bluetooth from a Linux desktop, using either AT commands or the Bluetooth MAP profile?

  2. If not currently supported, is such functionality — e.g., sending SMS from a Linux machine using Mudita Center or a CLI interface — on your development roadmap?

Thank you for building minimalist and privacy-respecting devices. Having a documented and supported way to automate or script SMS sending would be incredibly valuable for users on free software systems.

Best regards,

Kostas

1 Like
2

The only way to send SMS from my Linux PC is through this app:

It’s really fast and easy and you can write using your keyboard and copy paste stuff from your PC. Maybe one could build a script around that?!

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3

Thanks Tobias. I’ve tried installing scrcpy on my Ubuntu 24.04 desktop, but adb does not recognise any device.

1 Like
4

Hi, you have to enable USB Debugging under Developer Options on the Mudita. Then it works immediately.

Use Step 2, 3 and 4 of these instructions: Instructions on how to sideload apps on Mudita Kompakt

2 Likes
5

I’ve used scrcpy just fine on my mudita from Fedora

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1 Like
6

@kostasvg Currently, there is no support for this- officially we do support sending SMS over USB or Bluetooth from a Linux desktop.

Our team said that this is a gigantic effort and right now, we are focused on improving Mudita Kompakt.