bluetooth problem

[Marcske13]

I built the radio in my camper and try to use a few hardware to check some things ( Ctek to check battery status , and Tank check from Mopeka to check level LPG tank . Every time when i try to connect with the devices with bluetooth , radio gives warning that i must ennable Bluetooth before i can search for bluetooth devices . However , it does connect to my phone and the OBDII .
What could be the problem and how to solve it ?

Radio : Pumpkin Android 8.0 Universal Car Stereo/Radio Double Din 7 Inch Touchscreen Octa-Core with GPS Navi Bluetooth RAM:4GB+ROM:32GB
Ordernumber autopumpkin ; 500003675
Device 1 : Mopeka.com , standard device
Device 2 : https://www.ctek.com/products/vehicle/ctx-battery-sense

[Jammy]

Hi,
did the radio gave warning while you connect to your phone or OBDII ?
There is no the device you used here so that we are unable to test this issue for you.Maybe it is caused by the compatibility things.
Regards

[Marcske13]

Radio did give no warning with OBDII
CTEK : Compatible with Android OS 4.4 and higher, iPhone iOS 7 and higher, Bluetooth® 4.0
Tank check : The Mopeka LPG TankCheck app is supported by most devices with Android version 4.4 and up.

[Jammy]

Hi Marcske13 ,
in fact ,the android system which is developed basing on car stereo is different from that on mobile phone.
Hope your kind understandings.
Regards

[Marcske13]

ok

thanks