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About Earphone Jack
Earphone jack is the socket on any gadget used to connect a headset, headphones or earphones. Mobile phones and smartphone phones utilizes the 2.5 and 3.5 mm jacks, while sound system and home theater hardware for the most part have a 6.3 mm attachment.
Since it is a connector for plugging a standard pair of music earphones, It can also bolster stereo as well as microphone.