How to know when someone has blocked me on iPhone?

Okay long story short, I tried getting my friend to download snapchat, she reckons her phone 'died' over downloading it and we had an argument, now I'm pretty sure she's blocked my number for whatever reason.

Are there any promising signs to know if it's fairly true or not. She won't speak to me and I know there won't be a 100% way to find out unless she tells me. So there must be a few little tricks and giveaways from my end to show she's blocked me, we both have iPhone if that helps.

On iPhone it normal comes up 'delivered' or 'read' if it doesn't come up anything it means their phone is off or you've been blocked

You really can't tell.

  • What happens when you try to call someone who has blocked my number? I want to know if my friend has blocked my number. What would happen if they had blocked my number, and I tried to call them? Using an iPhone 5s, with the latest iOS update.
  • How would yoy know someone blocked your number? I have a regular phone and the person I texted has an IPhone. When I tried sending a text it said " The recipient that you are sending to has chosen not to receive messages. " What does that mean? My friend who also has an IPhone texted his number and he replied, but it had IMessage under it.
  • How would you know if someone has blocked you? I'm not on speaking terms with this person at the moment. Without calling, is there a way to know if he's blocked me? I have an iPhone and he has a Samsung. So when I text him, even if he gets it, it never says "delivered"
  • How to text someone who has you blocked on their iPhone? I can't text my ten year old cousin because his mother hates me. His dads (real dad and stepdad) don't agree with her and in all forms what's she is doing is wrong. He doesn't know IIm blocked on his phone but I would hate myself if he thought I just abandoned him. Please help me. He s my tiny cousin and I would literally never do anything manipulative or hurtful to him. I just want him to know I miss him and I wish I was around for them.