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Universal Apple-compatible CTIA Headset/Earphone 3.5mm ...
https://pinoutguide.com/HeadsetsHeadphones/samsung_moment_pinout.shtml#:~:text=That%27s%20because%20standard%203%20pin%203.5%20mm%20stereo,fine%20for%20listening%20to%20music.%20Headset%20compatibility%20issues
iPhone 4 audio jack pinout at DVinfo.net
https://www.dvinfo.net/forum/all-things-audio/495550-iphone-4-audio-jack-pinout.html
Re: iPhone 4 audio jack pinout Well, that turned out to be a waste of time. Made up a cable easily enough but the iPhone 4 doesn't seem to take an audio in through the mic connection while recording video.
Four-pin pinout - Apple Community
https://discussions.apple.com/thread/1114891
Inserting a 3-pin plug into the iPhone's 4-pin receptacle would also short Mic to Common. That wouldn't hurt anything and would allow the L/R earphones to work correctly. It also Stops/Starts the iPod, just as the switch would. You will not get access to the Microphone without a 4-pin plug. I found 4-pin connectors at Arcade-Electronics.Com.
Apple iPhone (1G, 3G, 3GS, 4, 4S) Dock cable connector pinout
https://www.pinouts.ru/CellularPhones-A-N/iPhone_connector_pinout.shtml
iPod Nano (4th, 5th Gen), iPhone (1st, 2nd, 3rd ... - pinouts
https://pinouts.ru/HeadsetsHeadphones/iphone_headphone_pinout.shtml
The iPhone requires a certain impedance on the microphone pin for the input to be detected and used. 1600ohms is a good choice as it is very close to the mic on the standard Apple headphones. So, if you are running an output from a PC or other amplified device into the iPhone mic input you will need to put a 1.6kohm resistor in series for it to ...
Iphone Headphone Jack Wiring Diagram - Wiring Diagram
https://facybulka.me/iphone-headphone-jack-wiring-diagram/
Apple headset wiring diagram save headphone awesome jack stereo headphone jack wiring diagram mini plug unbelievable audio download by 3 wire headphone jack wiring diagram with audio jack standard pinouts. 4 pole headphone jack …
Headphone Jack and Plugs: Everything You Need to …
https://www.headphonesty.com/2019/04/headphone-jacks-plugs-explained/
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