On 7/23 I switched from my mothers (limited) plan to an unlimited plan with my father and brother (both iPhone 6) and since then I have not been able to send or receive text messages. iMessage works just fine, as well as calling and receiving calls from all phones, but SMS won't send or receive at all. Some phones, when trying to send me a text, will get a notification that it won't send, and I'll get the same one on my end. My brother had a few problems with it at the beginning and then it went away, and my dad only had that problem the first day but they were sending, he just couldn't receive.
I've reset the network settings, soft reset my phone, added +1 to all my numbers (I got it from another thread), and waited as long as I did (It's now 8/9).
Long story short, why won't my iPhone SE send or receive texts and how do I fix it? I'd like to do everything I can to avoid calling costumer service due to anxiety, so anything helps.
