To extend the ringing time on your phone, go to the call divert settings menu. Depending on your phone, select:
- Menu > Settings > Call (or Calling) > Call divert.
- Menu > Tools > Settings > Phone > Call divert.
- Menu > Settings > Phone Settings > Phone > Call divert.
In Call divert settings select Voice calls >If not answered >Activate > To voice mailbox and select the preferred delay time. The maximum delay time is 30 seconds.
Note that the ringing time is determined by the operator settings and the call divert delay may not always be freely adjusted by the subscriber. Contact your operator for more details.