You can extend the delay time before a call is forwarded:

  1. Open the dialler, tap Phone.
  2. To forward all calls to number 12345 after 30 seconds, for example, enter: **61*12345**30#.
  3. Press the Call button.

For dual SIM devices, select the SIM card to use if prompted.

The codes mentioned are those used by most operators, but they may vary between different operators. If these codes are not supported by your network, you will receive an 'Unknown request' or 'Request denied' response from the network. Contact your operator for more details.