I have 2 pre+ phones. One with a busted screen and my other has problems with speaker, Ie it must be put into speaker phone to allow it to be heard. I am going to take screen from good phone bad speaker and put on good phone with busted screen. To speed up process I would prefer to leave the solid state boards on the good screen and just put the whole front assembly on the other phone. Will this cause any problems when starting phone back up? Suggestions please.