I forwarded my calls to one number now i can not change that number, I would like to know how to change that number ? I have Iphone 5c.

Hello there, Kushal3692.

In regards to the call forwarding feature of your iPhone, the information for where it is turned on or off is located here, in the online iPhone User Guide:

Call forwarding, call waiting, and caller ID - iPhone

Call forwarding, call waiting, and caller ID

Set up call forwarding, call waiting, or caller ID. (GSM) Go to Settings > Phone.

Call Forwarding: The Call Forwarding icon appears in the status bar when call forwarding is on. You must be in range of the cellular network when you set iPhone to forward calls, or calls won’t be forwarded.

If you're on a CDMA Network, then the following would be applicable:

For CDMA accounts, contact your carrier for information about enabling and using these features. See support.apple.com/kb/HT4515.

Thanks for reaching out to Apple Support Communities.

Cheers,

Pedro.