what should I do to properly use my mobile phone
I don't want to annoy others.
B : Well, you should be aware of others when using your phone in public. And you shouldn't shout.
A : OK. Any other suggestions?
B : Ur' you should also be careful about what intimate details you may be revealing.
A : That's not a bad idea.
B : And one more suggestion you shouldn't amuse yourself on public transport by calling everyone in your phone book.
A : That's fine. Thank you.