I have no idea how people can have so many icons on their home screens
Anyway I donāt mind the mail attachment thing too much as it does recognise them as attachments and strip them out of the message text when you send it at least.
Sidenote: IPadOS is nice but as with iPhone little real difference except for the main one which is FINALLY iPad has a calculator app
Depending on the age yes - I managed to install it on a 2019 ipad mini 5 which I wasnāt expecting to be able too. I donāt think Iāll get the AI features on that though.
Regarding the keychain, Itās the same back-end, just it has a slightly newer front end so Iād imagine no change and it should work as it always done
I have iPadOS 18 on my iPad and entered password in the password app and they are still synced to the password in settings on iOS 17 on my iPhone so canāt see any problems with older devices