['From a Home screen, touch and swipe up or down to display all apps. ... ', 'Tap Email .', 'From an Inbox, tap the Menu icon. ... ', 'Tap the Settings icon (upper-right).', 'Tap the appropriate account.', 'Tap the Signature switch to enable or disable .', 'Tap Signature.', 'Edit the signature then tap DONE (upper-right).']