How do I tell if someone has blocked you on their phone (Iphone) and I have a Droid LG5?

[AC Question]

How to tell if someone has blocked you on their phone (Iphone) and I have a Droid LG5?

I attempted to send a picture and a text message to four people. The message I received was "Delivered to Some." I know the 3 people who did receive it. Is there a chance that the fourth person has blocked me from their phone? I also tried to call this person and the phone rang several times and went to her regular voicemail and I did leave a voice mail. This person has an I Phone 6 or 6S. I have a Droid LG5.
Thank you.

 

[tube517]

Re: How to tell if someone has blocked you on their phone (Iphone) and I have a Droid LG5?

What texting app do you use?

I've never seen that before. Some times, when I send to an iphone(s) in a group message, I get "sending failed...tap to retry"....in Hangouts.
Strange thing is alot of the people in the group get the text/picture.