The autocapitalize attribute (https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Global_attributes/autocapitalize) makes it quicker to enter capitalized info on mobile keyboards without having to repeatedly use the shift key.
I suggest we add
- autocapitalize="words" on street_address input
- autocapitalize="words" on city input
- autocapitalize="characters" on postal_code input (for alphanumeric postal codes such as the UK which are always uppercase. See also T169205: Use numeric keyboard on mobile for zip code input, but it should be possible to do this even without that change)