1:- Never synchronize through Bluetooth (phone switch) because all data
could be lost.
2:-Do not open Bluetooth(BT) on public place .
3:-Keep your BT visibility hidden , use in when you need.
4:-Do not give your name BT. name. Use danger name like-"virus",
"hi virus", "warning virus".etc.
5:-Don't make unknown pairing .
6:-At the of making password .It should be above the four digit.
7:-Delete time to time , recent pairing .
8:-Some BT. software could be connected without pairing .
9:-Do not forget to off your BT device when not in use.