Some Linux operating systems for the Indiedroid Nova may not be set up to make use of the on-board Bluetooth properly. Please follow the below steps to enable BT.
Download the 3 files to the Nova from the following link:
steve laminger / RG503-kernel (Gitlab)
Open a terminal on the Linux system on the Nova and navigate to the location of the downloaded files from the above step.
sudo su
mv rtck_hciattach /usr/bin/.
mv rtl8821c_fw /lib/firmware/.
mv rtl8821cs_config /lib/firmware/rtl8821c_config/.
apt install bluez
echo 0 >/sys/class/rfkill/rfkill0/state
sleep 1
echo 0 >/sys/class/rfkill/rfkill0/state
sleep 1
/usr/bin/rtk_hciattach -n /dev/ttyS1 rtk_h5 115200 &