Lfohl

When I use Evernote on my phone (via the Evernote app), there are times when I accidentally delete important information from a note. For example, I try to hightlight part of the note (to copy & paste or to change the formatting) and I inadvertently type a random letter. How do I get all of that information back? There is no "ctrl-z" like there is on a windows computer. Help!