The iPhone 6 Plus recording function is unavailable, but the other voice function is normal, the music rigntong is normal. Here is the latest solution for it.
Use phone opening tools to disassemble the iPhone 6 Plus, remove the iPhone motherboard, put iPhone motherboard under the microscope to check , we find the
R0301 resistor that next to the iPhone big audio IC is missing, replace the new
iPhone big audio IC, and solder the R0301 resistor.
The R0301 resistor is missing, and this
resistor is on the I2SO but clock signal between the iPhone audio and CPU, so
we think we can fix it by soldering the resistor and replacing the iPhone big
audio IC.
Turn on the iPhone 6 Plus, open the voice
memos to test the recording function, but it's still not working.
Analysis and observe it, we find that there
is the trace of the welding on the shield cover of the iPhone baseband, which
means the colleague has repaired the iPhone baseband signal part.
Use BGA remove graver to pry the glue of the small components
that next to the iPhone tail plug cable, we pry it slightly, but many small
components fell off, which means the temperature and air are not controlled
well when blowing the shield cover or fixing the baseband signal part via QUICK 861DW hot air rework station, there are virtual
welding phenomenon on those small components. Check the iPhone bitmap through
the WUXINJI Dongle to find out the signal. There is a MIC insurance inductor, short
connect it, re-weld components.
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