Hi,

Try zero (0) and see if it would work.

I think the problem is from the samsung phone.

Most samsung phones do have problem with blue tooth connection. I just hope your phone is not among those phones. I am telling you this out of experience.

To confirm this, try the Hands free with another phone and see if it wold work.

Have you used the hand's free with your Samsung phone before? Because some these Hands free(s) are not compatible with some phones.

Try the hands free with another phone and let me have a feedback.

Take care.

Most Bluetooth headset is using '0000' as the BT pin code. Here's what you need to do:

1. Make sure that the headset is in discoverable mode.
2. Try using 1234 as the pairing code.
3. Check the phone (Samsung) if there's a message that will appear if you need to grant the permission to connect.

Hope 1234 works! Have a great day!