question: public boolean writePersistentString ( String key , String value ) { try { if ( checkService ( ) ) { return sService . writePersistentBytes ( key , value == null ? null : value . getBytes ( "UTF-8" ) ) ; } } catch ( RemoteException e ) { } catch ( UnsupportedEncodingException e ) { Log . e ( TAG , e . getMessage ( ) , e ) ; } return false ; }
target:  Write a string to persistent storage, which persists thru factory reset