Using DFU Restore to Solve iPhone Problems
Tried everything to get your iPhone, iPad, or iPod working again with no results? If your device is stuck on a blank screen, the Apple logo, malfunctioning, or even seems bricked, using DFU mode
iPhone
iPhone 4 Troubleshooting Guide
General Guidance: The 4 Rs Determining Upgrade Eligibility Problems and Fixes: Signal Drops or Degrades When Held a Certain Way (“Death Grip”) Accidentally Hangs Up or Mutes During
Fix: iPhone Hangs Up or Mutes During Calls When Held to Ear
A number of users have experienced an issue in which the iPhone unexpectedly mutes a call, hangs up or engages FaceTime when the device is held up to the ear. This problem occurs due to apparent
iTunes: “The iPhone cannot be synced. A duplicate file name was specified.”
Some users have reported an issue in which iPhones fail to sync with iTunes. In these cases, your sync attempt results in the error message. “The iPhone (name) cannot be synced. A duplicate
Photos or iPhoto Won’t Recognize iPhone: Fixes
Some users report an issue in which Photos (or iPhoto on older OS) no longer recognizes the iPhone as a camera. Consequently, you are unable to import images from the device to your Windows or