Requires iOS 6
For iOS 7, try RaiseToCall2.
Viewing an SMS conversation and decide to talk to the sender? Just Raise your iPhone to the ear and iPhone automatically dials the sender's number.
No more need to switch to Phone app or scroll through endless message conversation to dial a number.
Raise To Call allows you to instantly place a call while browsing through a message conversation. Just hold your iPhone to your Ear!!!
Using biteSMS instead of Apple's Message app? not to worry- RaiseToCall works for both iPhone's Message app and biteSMS!!!
No options to configure.