Security tips
Operating the device in hidden mode is a safer way to avoid
malicious software. Do not accept Bluetooth connectivity
from sources you do not trust. Alternatively, switch off the
Bluetooth function. This does not affect other functions of the
device.
Select
>
Settings > Connectivity > Bluetooth.
When you are not using Bluetooth connectivity, select
Bluetooth > Off or My phone's visibility > Hidden.
Do not pair with an unknown device.