If you ever decide to stop using MessageSling, cancelling your call forwarding is easy. And if you do leave and decide to come back, signing up again is a snap as well.

• AT&T(Cingular), T-Mobile
• Dial ##004# and hit send
• Sprint
• Call customer support by dialing *2 and ask them to cancel Call Forward on No Answer for your phone
• Verizon
• Dial *73 hit send