IPhone OS 1.0 build 1A420

iPhone OS 1.0 Build 1A420 is a build of iPhone OS 1. As of 2020 this build is the first confirmed and leaked build of iPhone OS 1.

Programs Installed

 * Text (renamed to Messages later)
 * Calendar
 * Photos
 * Camera
 * Stocks
 * Maps
 * Weather
 * Clock
 * Calculator
 * Notes
 * Settings
 * Phone
 * Mail
 * Safari
 * iPod