When Audio IC is not working properly.
- Unable to record voice
- Other party can't hear you while calling
- Phone is lagging and slow
- No Sound
In our iPhone repair community, we called it iPhone 7 Audio IC Disease.
|iOS 12 would show this message|
Why it happened?
Short answer: Drop it too hard, or bend.. One of the pad below the Audio chipset is broken.
"Advise: DO NOT send to normal shop to repair this The audio ic is located behind Baseband and very near CPU. You don't want the dealer ended up to tell you now got another problem appear or totally became unable to POWER ON.
Of so many case that i repaired their failed attempted job. They "accidentally" overheated the components around. They either caused the iPhone became No Service (Baseband shorted) or device became unable to power on (CPU shorted).
Ended up at higher cost repair and time wasted."
|Today we got an iPhone 7 Plus had this issue.|
|Let's take off the IC and look closer with microscope|
|This is very important line that would cause totally malfunction of audio or sound.|
C12 - I2S_AP_TO_CODEC_MCLK
|So this is the fix that must apply before we put Audio IC back|
|We still can see the green PCB glue on that area after repaired. If this iPhone suffer another dropping damage again, it would still working fine. The screen should break first before this problem reoccur.|
Update: We uploaded a video into YouTube "5 Dec 2018"