I recently purchased the iPhone 7 as an upgrade. I am not familiar with Apple products being a Microsoft user since the days of DOS..(forgive me). At first it was no problem signing in with my 4-digit pass code. The day before yesterday I fired the phone up and suddenly it wanted a 6 digit code for no apparent reason. I did the bonehead thing out of frustration and disable the phone...stop laughing....now the problem has become the fact that the phone is not synched with iTunes. Therefore my attempts to recover the phone are also thwarted due to the absence of, you guessed it, the same 6 digit pass code. I cannot return to factory spec and now I am totally stymied....Now what?????