headphones are set to "dock mode" so headphone mic doesnt work

Hello jyoti207,

Welcome to Apple Support Communities!

We want to help get the mic working normally on your Beats.

Let's start with these steps to troubleshoot a mic issue:

"Microphone does not pick up sound

• Make sure that the headset plug is securely connected and that the socket is clean and clear.
• Check that the microphone—located on the back of the remote—isn’t blocked or covered.
• Make sure the straight-end of the plug is connected to the headphones and the angled L-shaped plug is connected to the audio source.
• If you're using your Beats with a computer, make sure that your computer microphone is set to the correct input source."

This Apple Support page has the full details: Sound troubleshooting – Beats headphones and earphones - Apple Support

If the issue remains, is the adapter an Apple certified accessory? Does the same thing happen after a normal restart?

Try disconnecting and then reconnecting the plugs.

We hope this helps to isolate the issue to get your Beats working perfectly.

Cheers!