'ok google' not working? (galaxy note 4)

                                      FULL PHONE SPECS: Samsung Galaxy Note 4

CAUSES

- Incompatibility issues

SOLUTION

- Disable ‘Voice wake-up’ in the settings menu of S-voice

- Enable 'S-voice' function

- Ensure that the ‘’Ok Google’ detection is set to ‘Always On’ via Settings>Language and input>Voice search>Ok Google

- Factory reset and selectively re-install culprit apps that may interfere with the ‘Ok Google’ function