I believe that's more of asking if the person is well. But I agree it's also a formal greeting for Hi.
So I also heard that Hello was 여보세요. Is it not or is it another way to say this?
That's how you say hello on the phone. Just like in Japanese, you say konnichiwa in person but say "moshi moshi?" on the phone
So this was one of the first things i learned in korean but to be sure isnt this "annyeong" a shorter less fornal version of "annyeonghaseo"
I just knew the answer cause its written on my 21p shirt, is this cheating?