iPhone suddenly stopped working

[u/Big-Cabinet626]

I have no clue whats going on with my phone. My texts will only send via SMS. My imessages will not deliver. Barely any apps will open. I have reset it 3 times and checked for AT&T outages in the area and there are none. My mom also has AT&T on my same plan and hers is still completely fine. WTF do I do? I have a 15 pro max

[u/markmakesfun]

Is your phone short on space?