I am creating email verification in IOS and want to assist the user with verifying they have entered the correct email address before sending confirmation.
Some app use an instant input feedback with javascript to quickly inform the user his password is invalid, misspelled - www.ui-patterns.com/collections/input-feedback/entry/573, or sometimes use tooltips to just informs them what the field is.
I am looking for a way to prompt the user during or after user enters his email information and taps done other than alertbox popup. Any design patterns for tooltip in this use case?