Downgrading Mobile

I dropped the S4 and it seems to be completedly dead.  It is one of the things that is bound to happen eventually.  The screen is completely dead and we are not certain if the phone itself is also dead.  The screen will cost over £60 to fix, it really not worth it.  I am downgrading to Carol's Xperia.  I don't think I will struggle to downgrade, just a bit sad of the sudden death.