hcitool scan
it was working before , had some problems here and there , but eventually it will work somehow. this time it wasnt connecting to my bluetooth headphones, so as usual I tried removing the device and search for it , but it doesnt show the device i want. and I can assure it was working on the system before , and i have checked usual pairing methods , and i have changed nothing related to connectivity since then. also , my bluetooth device can connect multiple devices at once , but it seems it isnt supported on linux , so i always have to disconnect my phone and then try connect to it.
"[NB: please use beginners language for helping me solve this , good thing is i can copy paste
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