Ideal situation for Bluetooth messenger chat app
Cafeteria
Banks when you need to talk to your colleague
During a disaster, flood, hurricane, tornado, earthquake and etc.
End of the world, during a zombie apocalypse or in a war zone.
On an airplane when you and your friend are not seated together
Group camping or jungle trekking in a remote area where there is no reception
Cruise ship, wild safari, foreign trip with family or when you run out of your data pack.
