An agricultural apparatus includes an agricultural tractor and at least one agricultural implement. The agricultural tractor has at least one tractor controller and the agricultural implement has at least one implement controller. At least one wireless connection is connected to the at least one tractor controller and/or to the at least one implement controller. The agricultural tractor and/or the at least one agricultural implement has at least one adjustable setting controllable by the at least one tractor controller and/or by the at least one implement controller. A multi-purpose handheld wireless device communicates with the tractor controller and/or the implement controller by way of the wireless connection. The multi-purpose handheld wireless device has at least one application that transmits adjustment instructions to the tractor controller and/or to the implement controller to be carried out upon the at least one adjustable setting.
