I got into an argument with a friend earlier, and I sent her a follow up text a few hours later. After about 5 minutes, the message didn't say it "Delivered" so I held down and sent it as a text message. The message then said "sent as text message" in green. But now if I'm trying to send another message to her it will only send it in text message form, does this mean she blocked me? I have an iPhone 7 btw with the newest software and everything.
Read more: https://iphoneus.org/faq/did-she-block-my-number.html