The bill you were going to deal with later
Photograph it. Ask "when is this due and how much?" Get the answer, then say "remind me two days before": done, in one chat.
The school schedule on the fridge
One photo and it lives in your calendar. "Add these times for the semester": every practice, every pickup, every week.
The letter you don't quite understand
Insurance, tax office, landlord. Send the photo and ask "what does this mean and what do I need to do?": in your own language, plainly.