More secret iPhone codes Posted on: July 19, 2010 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:Amazing 1977 MIT tablet Your 70's iPad grandfather This is a video of an amazing 1977 MIT ..88 Year old doctor serving the poor in danger of .. You can't help but read this story and be so impressed with ..Interesting photos not commonly seen This is one of many interesting photos in the link below. Here ..Looking for a WordPress gallery plugin thats easy and looks ..Looking for an easy WordPress gallery plugin? You want Gmedia Gallery. I tested ..