Unable to use onboard Microphone Rock Pi 4B and Android 9 Tablet

#1

Hi,

I’m using the RADXA Android 9 tablet build with the Rock Pi 4B board. While trying to run calls using apps like Skype / WhatsApp etc. I’m unable to transmit my voice either using the onboard microphone Or the Bluetooth headset Or the 3.5mm audio jack. I can hear the other side though clearly

Can you please suggest how to resolve this issue

Regards

Rock Pi 4B on-board microphone not working
#2

For ROCK Pi 4B hw revision < 1.5, the mic is routed to the on board mic by default. For ROCK Pi 4C and ROCK Pi 4B (Plus) hw revision > v1.5, the mic is default for headphone jack.

#3

hi jack, i am using also Rock Pi 4B and struggle with same problem as vsmo2. Where is the mic to be soldered to on the board? Can you please show me ? Thanks in advance!

#4

hi vsmo2, did you find a solution?

Kind regards

#5

Hi Jack. Can you please tell me how you can use the microphone in rock pi 4b for android? Or just using USB?