My Lumia phone does not forward incoming calls to voice mail.

Check your call forwarding settings:

  • If you are using 4G (LTE), switch the Highest connection speed down to 3G in the cellular settings, then you will see the options for call forwarding.
  1. Depending on your phone, select Settings > network+ > set, or tap Phone > settings.
  2. Switch Call forwarding to On.
  3. Check that the number to which you want to forward your calls and other forwarding options are correct.