Can't use Bluetooth tethering while connected to wifi network

[Alessio Zheng]

Hello there, 

Can not use Bluetooth while I am connected to the wifi.

[Alessio Zheng]

No, it is not active

[CatsInTheCradle]

So, you can not connect to another smartphone via BT whether you are already connected to wifi or not; wifi is not the reason. You can only pair to another smartphone and share files. A smartphone does not publish BT services as earbuds do. You can connect to a smartphone via BT only if the other smartphoe in sharing its internet connection: BT tethering.

[Alessio Zheng]

From samsung, I can not connect to my old phone, but with my old phone, I can connect to the samsung. When I try with the samsung, it shows the bt connection, but in 2 seconds, it drops it.

[CatsInTheCradle]

If there is no BT service exposed, the connection can not be established.
If you are able to connect from your old smartphone to the samsung one, it is because a BT service is active in Samsung. For example: Nearby Sharing/Quick Share.

[Alessio Zheng]

Thank you very much for your help. I will contact the support in these days.