help me with this

hello, if someone can help me I would like to know what's the meaning of "だったら何だった"?

Hi!(^-^)/
だったら then / if it's so
何だった what was it?
or
だったら So what?
何だった Were those different?

It's too short to get at the exact meaning though.

thanks for replying!

umm, but together, how it would be the phrase? It's necessary in a bad manner? like "so what" that it sounds kinda like I don't care' and I know it's not like that. It's a response to someone saying something like 'you know that'

Also it can be impolite, it's depending on the expression.

だったら何だった is not common phrase but young people often say だから何だよ meaning "so what" or "nonsense".
In this case, the past tense だった sounds emphasizing something.

It's something like "If so, what difference would it have made?" If this is said in a mild tone, it can sound un-rude. Depending on the tone, it could sound like "So WHAT?".