"Sent as SMS" vs "delivered"
Do BOTH iPhones need to have "send as SMS" in order to receive? I texted my friend & our messages are always blue. She also has the "read receipt" feature enabled so I can see "delivered" and "read." But, I texted her when she was on a flight no internet. It came back green "sent as SMS" but that's it. It's been green for 2 days now, and I KNOW she's not in the air anymore. My iPhone 7plus has iMessage and send as SMS. I'm wondering if she ever got it? When I fly my msgs all unload on me the minute we land & I power on. Any enlightenment would be appreciated!