I got an Onda V820W CH Windows 10 tablet. (Cherry trial z8300)
Almost everything works. I can pair the headset with the tablet only it doesn't stream the audio to the headset.
I read in a forum of dell that there are more simular problems with this caused by "Serial IO I2C ES Controller" "source: Windows Update Issue - Serial IO I2C ES Controller - General Hardware - Laptop - Dell Community "
I tried it with an "old bluetooth usb module) then everything is working.
The chip is RTL8723BS UART.
Hope somebody has an solution or a driver update !
Thank you for contacting Intel Communities.
In this case, my recommendation would be to contact the Onda forums which would be the manufacturer of the product.