You're still flipping a coin… how is this communication?

Don't you simply read the state of the other entangled coin?

Heads = 1, Tails = 0?

You have no control over the resulting state, though. In this analogy, if you have two entangled coins, all you know is that if you flip the coins at the same time you get the same result… you don’t have any control over what that result is, and unless you arranged it with them beforehand you don’t know when the other person flipped their coin.

The analogy is imperfect: with quantum states you cannot tell whether the other person performed a measurement or not.