July 19, 2010January 22, 2014 More secret iPhone codes by happyorright More secret iPhone codes. Most of these codes work. With an iPhone 4 the main secrete code of *3001#12345#* didn’t work. Said an error had occurred. I used this code on friends iPhone 5 and it worked immediately to go into the Field Test mode. Related Posts:Coming around again – not just for Carly Simon I was driving and listening to a song that I hadn't heard ..Man gets bionic eye, sees wife for first time in ..Man gets bionic eye, sees wife for first time in decade - ..Should you buy an iPhone 6 Plus? So there are some advantages and disadvantages that I will share with ..How to Increase Compassion at Work | Greater Good How to Increase Compassion at Work | Greater Good. The Greater Good ..