How similar is this to the S4 model with the micro USB? I need to repair both my wife's phone and my own as the miniUSB jack is worn out. FWIW, I am a retired electronics technician, repairing mainly audio equipment such as amplifers and the like. I have the tools for SMD as well. I hope there is a teardown of the S4 already and maybe someone can point me to it? I will continue my search and book mark this page as a reference. THANKS!!!