I did root my SCH-i535 and it was a whole lot easier than I thought it would be. Here is the link I used to root.
I did download "ES File Explorer".
Changed the settings to:
settings-->Root settings-->Root Explorer
settings-->Root settings-->Mount File System
More-->refresh (you may need to exit app to see /)
goto /data/clipboard (delete everything in it.)
Reboot phone (you may not need to do this, but it doesn't hurt.)
Now I can copy and paste.