Unfortunately, editing the text in a pdf document is not yet supported by Adobe Acrobat Reader. We have made a note of your request and shall consider it for a future release.
so how can other companies do this and edit pdf and adobe cant
you not friends with larry just microsoft now ????
you can edit pdf files by using apps, i know some nice apps available on Play Store. give a try;
Turbo Editor ( Text Editor )
Jota text editor
These app design isn't nice at all but i think they're useful pdf editing apps. i use Jota, for the most part I love it. The one major issue I have with it is that you cannot access the clipboard to do multiple copy & paste. anw, hope it help