Haven't looked at the comments yet, so this may have already been stated, but it's not up to Apple to add states; it's up to each state to legally allow digital identification. I'd say within ten years, all states will allow it, and physical IDs won't even be required anymore.

"Singing Sweet Home Alabama all summer long" - Kid Rock

After a quick YouTube search for battery drain tests, I found that the 13 Mini generally lasts 6.5 hours with nonstop use. The S21 generally lasts 7 hours with nonstop use. Your S21 has better battery life. You'd better off just getting a 13, or 14, both of which will last much longer than the S21, basically twice as long.

It might be a little more money, but the phone itself will last for several years without slowing down, so you won't need to upgrade as fast as you would with a Samsung. Samsungs are great, but their lifespan is much shorter than iPhone.