Samsung Galaxy S Advance

Find "Voice call"

Press Applications.

Find "Voice call"

Press Settings.

Find "Voice call"

Press Call.

Find "Voice call"

Press Call forwarding.

Find "Voice call"

Press Voice call.

Select divert type

The current settings will be displayed.

Select divert type

Press one of the following options:
Always forward

Select divert type

Forward when busy

Select divert type

Forward when unanswer

Select divert type

Forward when unreachab

Divert calls to voicemail

Key in (prefix) 5 (your phone number) and press Enable.

Exit

Press the Home key to return to standby mode.