I need advice!

My bf and I didn't get in a fight, per say, but we had a moment of disagreement that led to him hanging up the phone. We're long distance, so the best I could do was apologize through text as soon as he hung up. I thought I'd give him space, and I'm sure he felt the same for me, though it's been all day now. Weekends are the best time for us both to talk, and usually we would be right now. He's a rather easy-going guy and doesn't usually get angry, and we usually talk things out if we hit a problem, though before I could even say anything he hung up. The very last thing said between us was my apology early this morning. I feel guilty. I'd like to try and say something to him, but I don't know how or what. 
I'd like some advice if anyone could help