I'm Chinese, and I never understood this D:, it's just too weird for me to call some one else's parents auntie or uncle.
To be honest here in America even among our Asian American cultures this is dying, but in Japan, China, Taiwan, etc. It's a "common courtesy". Similar to how here we would walk into our friends house and say "Hi Bonnie!" to our friends mother without their permission. We would probably say, "Hi Mrs. Smith". On a side note it also helps avoid confusion as in Japan (the Asian Culture I've studied the most) you have to be EXTREMELY close to use a persons given name. Therefore you may visit a friends home and if you are calling both people Ms. Smith it can get a bit confusing. (there are more reasons I'm sure but these are some of the major ones)
Nope, like when you greet someone, like instead of "Hi Mr Smith" it'd be "Hi Uncle"
It's a sign of respect. It's really personal to call someone by their first name.
We do the same in Afrikaans (i.e. from South Africa). It shows respect.
we do the same thing here in Trinidad as a sign of respect
yes, to show respect,
even towards the elders you hate.!
yeah. its normal.
i really dont know why.
what do you mean by call, cellphones?