Call forwarding, commonly referred to as call diversion, is a telephone feature included in all telephone switching systems that enables calls to be redirected to a different place where the intended called party is present, such as a mobile phone, another mobile phone, or another phone line.
Call forwarding was created by Ernest J. B. The forwarded line normally rings once in North America to notify the client employing call forwarding that the call is being rerouted.
Call forwarding allows incoming calls to be routed to any other domestic phone number; however, the owner of the forwarded line is still liable for any toll charges.
What *#61# means in mobile
*#61# is used to deactivate call forwarding on mobile when not answered. In as much as call forwarding is good, it could create serious damage to one’s privacy when activated by a third party.
Therefore *#61# is used to check if your calls are been forwarded to any third party without your knowledge.
Not only calls but the history of all services that could be forwarded such as voice, data, FAQ, SMS, Sync, Async, Packet, and PAD