How do I decrypt my samsung galaxy 3 phone

[AC Question]

I encrypted Samsung galaxy 3 phone and have had nothing but problems with it. The screen will lock sometimes. It won't go back a page. I have to go in and close every screen. Phone is extremely slow now.

 

[B. Diddy]

Welcome to Android Central! Encryption is irreversible. You'd have to do a full factory reset in order to make the phone unencrypted, but that would obviously wipe the phone.