How to tell if my number has been blocked on an iphone?

I'm trying to reach someone. They have not responded to my texts. I called today, it rang once, and was sent to voicemail. He has an iphone 5. If I'm blocked, would it ring at all or go straight to voicemail with no ringing?

There isn't any special way to tell because it's an iphone. The phone will ring on your end as if they are ignoring their phone and even if yew're able to leave a voicemail, it will be blocked if yew are blocked.

I don't think you're blocked because, a voice mail service can be activated by any time or if busy. The program the voice service will answer for you. Now if someone blocked you shouldn't feel a thing

Call from private.

If you don't know how:

*67 (XXX) XXX-XXXX

X = their number