Samsung note 5 back button not working

[Anwarmirza]

Samsung note 5 back button nd menu button not working 

[Lekshmanan]

Try Diagnostics In Get Help (Samsung Members App )

[CS_member7]

Dear Samsung Member,

Greetings from Samsung Customer Support!

Please perform the below mentioned steps to resolve the issue:

* Check after rebooting your device. 

For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support