Yeah, by that way people on the other side of the phone can hear more clear~

haha ........... ! its psychological but its very stupid to shout on phone if the person is not hearing clearly call them again...... find a place having good signals.....
shouting that pathetic

because the phone is deft. (.)(.)

Probably a mix of poor education, habit, and there being loads of other people around doing the same thing.

The volume in general is high in the country...I mean, did you listen to how damn loud public announcements are in subway stations? You'd think the whole country was deaf...

Because the country is too noisy.

problem with the signal .. mobile signals are very weak .. non of the mobile companies try to improve this ..

China is too noisy. i guess this i the logic

You have no choice when it is noisy around; everyone yells and you yell,too.
Another typical example is the restautant. It seems like you have enter into a supermarket when dining in a Chinese restaurant.