Worst case - connect the S2 to your computer. Copy everything that you want from the S2 to the computer. Disconnect the S2 and connect the S5. Copy everything from the computer to the S5.
Originally Posted by
Davecl I never backed up my s2
That's not as bad as saying "I cross busy highways with my eyes closed", but it's close. Make weekly backups (unless nothing has changed on your phone that week that you care about) a religion. And if you're going to do anything that has the slightest possibility of causing a problem, make a backup first. (I just went through that this morning - installed a new version of my launcher. I've done it many times with no problem, but I still made a fresh backup first. Yes, it can take an hour, but it can save days of work when something goes wrong [like when I flashed a keyboard to the system partition and was left with a box of non-working parts. It took about 5 minutes to restore the phone. Thank you, HashCode.])