A drug delivery device includes a housing, a container disposed in the housing, an activation mechanism, and a needle insertion mechanism (NIM). The container has an inner volume to contain a medicament which is urged out of the container by the activation mechanism. The needle insertion mechanism (NIM) is operably coupled with the activation mechanism and includes an actuation assembly adapted to insert a needle and a cannula to deliver the medicament from the container. The actuation assembly is movable between a storage state, a first operational state, a second operational state, and a third operational state to selectively position the needle and the cannula.