[bestoverall]

For the life of me, I couldn't find the option to forward calls. It must be one of those obscure menu option like the USB drive mode.

Can someone share the secret?

Also is there a decent third party program that will forward calls without incurring call forwarding charge from Sprint? I know about Google Voice, but was looking for something more simple.

[IIJBII]

I don't believe there is (avoiding charges) but I would be interested in knowing this as well.

[sfhub]

Call forwarding is handled by the network, not the phone itself. Some phones have shortcuts to configure the network settings for you, however since it is done by the network, you can always manually configure it using the * codes.

Sprint doesn't charge for conditional call forwarding (it just uses your plan minutes). They do charge for unconditional call forwarding.

Here is some info on how to set it up.