Yesterday my phone was refusing to get any data off the cell network. I thought it was maybe a late victim of Tuesday's water damage. I put it in rice overnight. No change this morning, it was still showing a connection but getting no data. Pulled the SIM card and reseated it, to no avail. I sighed and scheduled an appointment at the local Apple Store, and hoped I'd be able to fix it instead of replace it - this 6s does everything I need and still has 85% of its battery capacity.
Then it hit me. Oh. Maybe I'm just disconnected? Yep. T-Mobile was trying to charge an expired card.
DERP. Paid that and now I have a working phone again. Paid my rent too while I was at it.