How does the iPhone 7 and 7 Plus malfunction when the audio doesn’t work?
- The microphone and earpiece do not work simultaneously during a call
- iPhone takes too long to restart
- The speakerphone activation button is not active
- Noise and crackling can be heard during a call
iPhone 7 and 7 Plus audio not working
The photo shows that the volume mode button is not active. If you see such a picture on your iPhone when dialing a call, then you need to contact the service center.
Avoid breaking the audio codec!
According to our observations, the main reason for audio codec failure is mechanical damage caused by a crash. In other words, the failure occurs after a fall or impact. We often see dents on the aluminum body of the iPhone or cracks on the glass of devices that customers bring us for repair.
It happens that after replacing a non-functioning display, some time passes and the sound stops. This is the result of past crashes of the device, not a problem caused by the display replacement and previous intervention by the technician.
iPhone 7 and iPhone 7 Plus are particularly prone to audio codec issues.
There are far fewer fixes of this nature on the iPhone 6S, although the chips are absolutely identical to the designation 338S00105. Therefore, we have concluded that the resulting failure is a design defect and applies only to newer iPhone models.
How to identify a malfunctioning audio codec independently
To accurately determine the audio codec malfunction, you need to check several parameters and operating modes on your iPhone.
- So if the sound has disappeared on your iPhone 7 or 7 plus and you can’t hear anyone-and no one can hear you-check the mesh protecting the earpiece and also the protective mesh by the microphone. It’s possible that they’re clogged and covered with dirt that doesn’t let sound out. In this case, cleaning or replacement of the mesh is necessary.
- Reboot the device, there may have been a software failure and after rebooting the microphone and speaker will correct itself. However, if the iPhone takes too long to restart, this is a warning signal indicating an audio codec failure on the motherboard.
- Try calling any number and try putting it on speakerphone. If the speakerphone button is not active, this is another symptom of an audio codec glitch and a problem on the motherboard.
How to fix the sound problem on iPhone 7 and 7 plus?
You will need to contact a service centre and have a diagnosis carried out. The technician must examine the equipment and offer a solution to the problem. In most cases, you will need to reset the tracks and contacts on the motherboard and either replace or reballing the audio codec.
iPhone 7 and 7 Plus audio not working
This is what the chip looks like after it has been unplugged from the motherboard
How much does it cost to repair the audio codec on iPhone 7 and 7 Plus?
Audio codec replacement costs for iPhone 7 and 7 plus and prices for other services, in the section
If you have any additional questions, please do not hesitate to contact me. contacts can be found here
You can follow us on Instagram
