Medicament delivery device comprising - a housing; - arranged to accommodate a medicament container filled with medicament; - a drive unit comprising a plunger rod operable to act on the medicament container; - a mechanical activation mechanism (182, 184, 186) configured to interact with the drive unit and wherein said mechanical activation mechanism is movable between certain predetermined states when interacting with the drive unit; - a recording unit capable of recording status changes of said medicament delivery device including the status of the mechanical activation mechanism; - activator elements operably connected to said recording unit and positioned such as to detect when the activation mechanism has been moved between certain predetermined states; - a manually operated actuator that, when operated, alters the drive unit from a locked state to a release state, wherein, in the release state, the plunger rod of the drive unit is released and moved to exert a pressure on the medicament inside said medicament container, and wherein said activator elements are arranged to detect the movement of said plunger rod in a proximal direction; - a medicament delivery member assembly operably attached to said medicament container and arranged with manually operable activation elements, which activation elements, upon operation, are moved from a closed position to an open position of the interior of the medicament container for performing a priming operation of the medicament container; and wherein said recording unit further comprises - orientation elements capable of detecting angular positions of the medicament delivery device after activation; which orientation elements are activated by the activator elements detecting the movement of said plunger rod in the proximal direction; - information elements capable of providing a user with information regarding correct angular positions of the medicament delivery device for a priming operation based on angular positions detected by the orientation elements, wherein said information elements are capable of providing a user with information regarding erroneous angular positions of the medicament delivery device for a priming operation, wherein movement in the proximal direction means movement towards the end of the medicament delivery device which under use of the device is located closest to the delivery site of the patient. - a housing; - arranged to accommodate a medicament container filled with medicament; - a drive unit comprising a plunger rod operable to act on the medicament container; - a mechanical activation mechanism (182, 184, 186) configured to interact with the drive unit and wherein said mechanical activation mechanism is movable between certain predetermined states when interacting with the drive unit; - a recording unit capable of recording status changes of said medicament delivery device including the status of the mechanical activation mechanism; - activator elements operably connected to said recording unit and positioned such as to detect when the activation mechanism has been moved between certain predetermined states; - a manually operated actuator that, when operated, alters the drive unit from a locked state to a release state, wherein, in the release state, the plunger rod of the drive unit is released and moved to exert a pressure on the medicament inside said medicament container, and wherein said activator elements are arranged to detect the movement of said plunger rod in a proximal direction; - a medicament delivery member assembly operably attached to said medicament container and arranged with manually operable activation elements, which activation elements, upon operation, are moved from a closed position to an open position of the interior of the medicament container for performing a priming operation of the medicament container; and wherein said recording unit further comprises - orientation elements capable of detecting angular positions of the medicament delivery device after activation; which orientation elements are activated by the activator elements detecting the movement of said plunger rod in the proximal direction; - information elements capable of providing a user with information regarding correct angular positions of the medicament delivery device for a priming operation based on angular positions detected by the orientation elements, wherein said information elements are capable of providing a user with information regarding erroneous angular positions of the medicament delivery device for a priming operation, wherein movement in the proximal direction means movement towards the end of the medicament delivery device which under use of the device is located closest to the delivery site of the patient. wherein said information elements are capable of providing a user with information regarding erroneous angular positions of the medicament delivery device for a priming operation, wherein movement in the proximal direction means movement towards the end of the medicament delivery device which under use of the device is located closest to the delivery site of the patient.