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iPhone 7 Audio IC – “Loop Disease” What is it?

Audio IC and Your iPhone 7 Speaker Problems

Another pervasive board-level issue is duping a growing number of Apple iPhone owners. In the past, users ran into iPhone 6+ touch issues which became known as Touch Disease. A surprising amount of iPhone 7 owners are now reporting problems with various audio functionalities. Users will first notice their microphone not working while making phone calls. The fault is known at the C12 pad on the audio integrated circuit chip. Technicians now commonly refer to it as the ‘Audio IC’ or ‘Loop disease’. It is unclear whether the issue is a manufacturer defect or due to regular wear of the device. Apple was recently hit with a class action lawsuit because of this particular issue. Fortunately, our technicians at Jet City Device Repair have the fix.

Audio IC

A common indicator of Audio IC disease is an error when using the voice memo app. Reports mention a grayed-out record button or an error message that reads ‘Recording Failed. No audio device found.’  Users also notice their microphone not working during phone calls. The speakerphone and Facetime icons also become grayed-out on your call screen. Many users have also reported their iPhone won’t turn on. Others state very long boot up time when powering up their devices. An Apple icon will seem to hang for minutes on end before finally powering up all the way.

Audio IC Symptoms

  1. Slow startup
  2. Voice memo error
  3. Grayed-out speakerphone
  4. Videos don’t record audio
  5. People can’t hear you on calls

Audio IC

The Fix

Disclaimer: This repair is not for the faint of heart. If you do not have any soldering experience, we recommend not attempting the repair. A small misstep could leave your phone permanently damaged. While the issue doesn’t directly affect your internal storage, we always recommend backing up any important data.

The problem exists not because of the IC chip itself, but with its connection to the logic board. First, we must desolder and remove the IC chip. Next, we clean the remaining pads and install a jumper to the C12 pad. The jumper creates a more reliable permanent repair because it makes a connection to where C12 runs to even if the pad can’t make that connection. Once installed, we must re-ball the IC-chip in order for it to fasten back to the logic board. The IC-chip must also be oriented and aligned accurately for all of the contacts to meet. This process helps to close the gap that causes all these audio issues.

The technique takes a trained hand and the proper tools to be successful. Jet City has the equipment and know-how to reverse this problematic issue. Contact us today and we can help return your phone back to normal.

Audio IC
A technician repairing and iPhone 7 audio ic.