Introduction
Do you have an iPhone with no sound or unable to hear people on a call? Did another repair shop replace the speaker on your iPhone but there is still no sound during calls? Apple’s 10th generation iPhone 7 & 7 Plus are both great devices, but since their release in 2016, there has been one wide spread problem with them. The iPhone Audio IC has a high possibility of failing which can lead to audio problems that require a complex microsoldering repair.
In this post, we discuss the Audio IC chip itself, the reasoning behind it’s failure, and a brief explanation of the solution behind the repair we perform to correct it.
What is the Audio IC?
The Audio IC is a chip that is found in both the iPhone 7 and iPhone 7 Plus iPhone logic board. It converts the sound waves into an electrical signal that is then converted into an audio signal by the device speakers. The chip itself is what makes the iPhone produce sound and is responsible for playing music, recording, and transmitting audio. If the chip fails, you will need to replace it through microsoldering.
What causes Audio IC failure?
Audio IC failure, (also known as audio codec failure) is most commonly caused by hard impact and unintended bending (flexing) of the device which results in a pad or voltage line trace fracture. This fracture typically occurs on the C12 pad and causes the chip to stop transmitting audio information resulting in the iPhone being unable to process and control audio with the rest of the device. The phone does not need to show any signs of physical damage and the speakers or microphones don’t need to be damaged either. In most cases, the problem is gradual and usually happens without noticing.
What are the symptoms of iPhone 7 audio IC failure?
Common signature symptoms of Audio IC failure are:
- Greyed out speaker option during calls
- Cannot hear audio during call
- Microphone not working
- No sound during a video recording
- Cannot record voice memos
- Crackles if the phone is twisted during recording
- Static/crackling sounds through earpiece during calls
Uncommon symptoms:
- Boot looping
- Long boot loading time
- Greyed out WiFi
- Siri can’t hear you
- Some iTunes error codes can also be triggered by this failure
How we repair the Audio IC failure
The iPhone 7 no audio repair involves removing the IC, repairing the failed board pads, laying primary and secondary jumpers, reballing or replacing the IC, and resoldering it back to the logic board.
Conclusion
A signature fault of the iPhone 7 series is the failure of it’s Audio IC which is commonly caused by hard impact and unintended bending of the device. This causes the chip to stop transmitting audio information resulting in the iPhone being unable to process and control audio with the rest of the device. Symptoms of this fault range from having a greyed out speaker option during calls, not hearing any audio during calls to not being able to record voice memos using the voice memos app.
Because this iPhone 7 with no sound on calls fault is due to logic board failure, it is not user repairable and requires an iPhone logic board specialist to offer a permanent repair solution. Seki Gadgets offers this out of warranty repair to both retail and business customers through local walk-in appointments or nationwide mail-in service. Contact Us today to learn more about our iPhone Logic Board Repair and iPhone Data Recovery services.
