CTIA-OMTP adapter cable.
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Suitable for the compatible conversion of different versions of TRRS 3.5mm audio plug, to achieve the compatibility between the CTIA standard and the OMTP standard.
The function of this adapter cable is to interchange the definitions of the ground and microphone on your 4pin 3.5mm plug to solve the compatibility problems.
For example, If you buy a new mobile phone, with headset plug in the phone, but can not hear any vocal sound. It means maybe the 3.5mm plug of headset is not compatible with your phone. This adapter cable can help you!
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