In case the voicemail button on the dial pad is not working( nothing happens when pressed.) Then do the followingUsing the phone keypad enter number *5005*86*123#Press call and wait for a few seconds ( about 5 to 20 secs)Check the voicemail button, you should now be connecting to your voicemail. (123 is the voicemail number of QTEL if you are using any other then substitute it instead of the 123.)